You have by far and away the best marine repair themed channel I have found. You have personally saved me countless hours in figuring things out and thousands of dollars in shop costs.....thank you!
Perfect timing.. Just today I was just looking at the fuel lines on my '75 70Hp Evinrude and thought they probably need changing.. I wonder if there is anything else to consider. Came in and found this video - thanks for the heads up on the clear filter pre engine - will definitely be installing one now.... Love the channel, you have helped me out with a multitude of different service items on my boat. I definitely owe you a beer or three,...
I replaced my fuel line about a week before this video came out because the primer bulb wasn't getting hard. After seeing this video I pulled my fuel filter and it was filled with the lining from the inside of the old fuel line. Awesome timing on releasing the video. Keep up the awesome work!
As many here agree.. Awesome videos! well explained with details that help us to understand how things work and encourage us to try them out without being scare of "breaking things". Appreciate the time you spend making and editing your videos. I've personally tried a few things already and they came out really great. Great job, mate!
watched the video on perished fuel lines. didn't know what the inside of the lines could look like till I watched this video. it for sure may solve my issue with my Mercury 2 stroke. my ball hose like that I took off for the winter is old and the gray material like in your video. I have a new one that came with my new 6 gal. external tank and will try that soon. also will replace the other fuel lines as well on the motor to be safe. already replaced the fuel filter but like your idea on installing it before the motor to keep an eye on it. watching all your videos since they are so educational plus the weather here is keeping me house bound. haha. one thing I don't like is not knowing something and how it works. keep up your great service to the mechanical world out here.
I just replaced all the plastic hose clamps with stainless on my 1990 johnson 175gt, from the carburetor to the new fuel primer ball. A big difference as far as holding prime and oil leaks under the cowl. I replaced some of the hose. I had no idea hose would deteriorate like that. I will be getting a clear gas filter(since I need a new one anyway) Thankyou for your help.😎👍
Great video as usual Stu! I replace lots of fuel line every year. When ever we repower a boat or rebuild a power head, we always inspect the boat's fuel system and replace fuel lines as needed. Ethanol fuel sucks. I also ordered a shirt from you too!
Hi Stu! Had to jump through some digital hoops to be able to comment- just figured it out. I've been looking at your videos for quite a while and I can't even tell you how much I have learned, so keep em coming. My local mechanic seems to have similar knowledge and attitudes (and I have actually told him to look up your videos) and you are both hoots. At least after watching your stuff, I can talk somewhat intelligently about whatever problem I'm having with my boat. Anyway, great stuff!
Great information Stu this happened to my mercury and had merc fuel line you showed which I replaced but didn't check fuel pump so that's the next job. I was having trouble tuning it but with new fuel lines it was so much easier. Thanks again cheers mate
Thanks John, it's amazing how often fuel lines are overlooked when diagnosing a motor that won't run properly. Well worth checking the fuel pump and carburettors as all those bits of debris will have gone somewhere.
Fantastic, this fixed my problem had powering down Issues, changed my fuel lines which were the same lines in this video, took the boat for a run and perfect, thanks heaps.
Thank you so much for your response and helpful advice. Ill try to check all those things you listed now or next season. I am in the US so we are going into the winter season. If you ever get an engine in the shop that has that kind of problem it would be even more helpful if you did a short video on diagnostics and solutions. Thanks so much!!
Your video was extremely helpful. During my vacation started to notice my boat was starving for fuel at full speed, it idled fine but at full speed kept 'bogging out' (60hp Merc 4 stroke) Upon inspection I found lots++ little black pieces of debris in the fuel tank. So the mechanic at the campsite and I drained out as much fuel as we could from the tank and then he replaced the primer bulb and changed the fuel filter. Back out on the water and the problem still exists so he insisted on a number of different things but my good judgement told me to just hold off until I could do some research of my own, which led me to your video. Everything you described is exactly what happened to me. I am very confident the problem will be fixed finally by me because of you. Thanks a million for saving me much money in unnecessary fixes. Will also be installing a water fuel separator. Question: can I install a water separator under the floor accessible from pop out inspection plate because i have a fully floored fishing boat . THX.
Not sure how old the fuel lines are, as they were in place when I brought the boat. Like you said it's worth keeping an eye on these things having foreign bits in your fuel is bad news.I wasn't 100% convinced it was the fuel pump diaphragm, the guy at the boat shop probably wanted to get more money out of me. The fuel pump kits wasn't too expensive any eay so I thought what the hell, it won't hurt and I got to learn some thing.
It never hurts to replace things before they fail, particularly if they aren't too expensive. Fingers crossed it will run sweetly for years to come now. :)
Hey, Stu...Like Florida Fly Fishing said, you have THE BEST Marine channel on TH-cam. As long as we are 'discussing' fuel systems, maybe you can point me in the right direction for a winter project I am planning. As I mentioned in another post on another one of your vids, I am redoing a 17 foot early 1960s MFG fiberglass hull boat. One of the things I want to change is I want to install an in-floor fuel tank, not only to increase fuel carrying capability (I'm thinking a 25 gallon poly tank) but also to 'free up' valuable floor space used now for extra 5 gallon cans. I know how to install the tank and vents, but am unsure on plumbing the fuel lines or any electrics. Also, will I have to put an external pump on the lines? Do you have any videos aimed at in floor tanks or can you recommend where I can find any? I plan on powering the boat with at least an 80 hp motor. I originally was going to convert her to a 350 inboard, but....too much work. Our eventual plan is to change this boat that someone modified for skiing back to a boat primarily used for fishing and family cruising on the Great Lakes here in the USA. Love your channel and can't wait to see more on your boat build.
Hey mate, I think underfloor fuel tanks are a good way to go and I'll be doing some research on them soon as I'll be installing one in the boat I'm building. I don't think you will need extra fuel pump beyond the one in the outboard, it just might take a bit longer to prime. I imagine you could use a bit of hardline with a fitting closer to the outboard itself, but it wouldn't surprise me if many installations just have regular fuel hose all the way from the tank.
Hey Stu, great videos. I've watched them all. Just today I did a carb rebuild on a 15hp Yamaha 2st. A stroke of luck, I watched your vid on this motor the night before by coincidence. The girlfriend can't listen to another video late at night, but I love it. I don't suppose you have seen too many TLDI tohatsu motors, if you ever get your hands on one, a vid would be tops. Maybe some synchronisation with a timing light on the small two strokes is coming soon? Thanks againMattGladstone
Hey Matt, I actually have a Tohatsu TLDI motor in the workshop right now that belongs to Paul who has been in a few of the vids. The plan is to fix it up completely so will be doing a few vids on it for sure.
Well took a break from the outboard engine today to my Honda engine pressure washer not running. used my new vacume pump with gauge to test the carb that wasn't getting fuel in the bowl? took all the fuel lines off and found a in line filter in the hose going into the tank. Looks suspect for being clogged so cleaned it the inside of the tank and blew all after carb cleaner with air. put it all back together and runs like a champ. guess I need to do the same with the boat motor. like the small vacume pump works great.
Stu, the local Pep's has two fuel line types in 8mm. Both are stamped that they meet the same standards. However one is 'rated' for carburettor feed line, the other is fuel injected fuel line. The difference is the carburettor line can handle a lot more vacuum (external ) pressure before collapsing (8lbs apparently) , while the injection fuel line only handles 4lbs of vacuum, but a few hundred PSI internal pressure. I doubt an outboard fuel pump could drag more than 4lbs vacuum (carb floats/needles don't like much more than about 2lbs of pressure anyway) so either should work, but apparently there is a difference. And can you talk to the TV/Foxtel people? I like the length of your product placement ads a lot more than theirs!
Hey Ron, I should have mentioned that low pressure hose would be fine as EFI hose is a lot more expensive and certainly, as you say, not necessary. One of my best friends works for Foxtel, I'll have a word with her. ;)
Thank you for all the great videos. What brand/rating fuel line works best. The grey line with liners seem to break down and clog the fuel pump and filters. Is there a certain A1 black hose for under the cowl?
I've got this one on adding a water separating fuel filter th-cam.com/video/L4FnuY989w0/w-d-xo.html but I'd like to do another on these smaller inline fuel filter.
you are freaking awesome man! Today i just my new fuel filter and fuel pump rebuild kit from ups. I asked you when you did the tohatsu timing if you could do some Mercs and now you have it. I told you about the leaking oil in the cowling. You actually answered one of my questions in the vid. Mercury uses zip ties on all there lines and i wanted to see if i could use stainless like you did in the video. Since i (think) i found my leak, i wanted to add new hoses under the cowling. But i don't know if i need to have the exact diameter or could it be a little smaller or larger. If i go on boats.net i see the hoses are different diameters(and expensive). Could i just find the diameter from the parts list and go to a auto parts store and cut my own? My leak seems to be coming from the oil pump(either hoses at the pump or the pump itself). What i did notice looking at the service manual is that mercs have two line markings, one on a lever and one on the pump bracket that need to line up. Mine wasn't lined up so i had to tighten the pump linkage to get them to align at idel. I took it as idle meant not to move the carbs or throttle and set it there. Thats what the manual didn't tell me. Thanks again and post me the link for your shirt. I will order one monday. Sorry for the long message.
Thanks mate, and yes, get the diameters from the parts sight and buy good quality hose from an auto store. Marine parts are alway more expensive for no good reason. T-shirts available at dangarmarine.com.au/collections/merchandise/products/dangar-marine-t-shirt Be sure to send me a photo if you get one!
Good on ya Stu!! another good and informative vid. Thanks for the mention and I love the shirt. I had a problem with fine black particular bits building up in my carbi and making the motor run very rough. I had black rubber fuel lines after my fuel water filter, not sure how old it was. I didn't notice any bits in the filter under the cowling be for the fuel pump, it looked like it could have been from the fuel line (I'm only saying that because the bits in the carbi are same colour as the fuel line) or may be fuel pump diaphragm I have replaced both and there's on problem now. could the black fuel lines break down in such a way they produce fine bits the could clog carbi jets? or was the black bit just a build up and I didn't need to replace the lines or diaphragm.
I'd say you did the right thing by changing the lines. The diagram can split but I've never seen them crumble like the debris you are describing. Do you know how old the lines were?
Great video, thanks for sharing. I wish I saw this video before installing some 'grey' fuel lines below my deck. I ended up having to replace them due to fuel vapour (smell) passing though the walls of the hose and stinking out the bilge. Could have been dangerous over time too? like you suggest people should only use the Marine rated fuel hose stamped with: SAE J1527 ISO7840 USCG A1
I need to fit some new fuel line to a 30 hp Honda four stroke. Should I go with 3/8 or 5/16 line? My boat is 22 feet long. Can I make the line 20 feet long and still draw fuel? What is the band of the inline fuel filter that you use for the clear fuel line (outside the motor)? Should I use the same stainless steel fuel line hose clamps for building my fuel line? Thanks!
Great video Stu! What are the non marring raised grooved hose clamps, i can't find them, just need a mfr or part number so I can order some, great video!
Hi Stu. Great video. I purchased one of your t-shirts and I am very fond of it. Thanks for the info on hose clamps. Question regarding the glass inline fuel filter. I have a new Yamaha F6C with approx. 1.5m of hose from tank to engine. Do you see any issues installing the inline glass filter just after the priming bulb while leaving the under-cowling filter in place?
good thing I tried to start the merc today to check the gears. it wouldn't start? first check spark and was good then opened up the bottom carb and was empty. 2 of the fuel lines I put in were pinched. good thing I kept the old ones with the bends. how do you take a new fuel hose and put a bend in them? do you put something in them that has the curve you want and heat it up on a bench?
Hi Tim. Good question. I've never made a bend in a fuel line, I've normally found them to follow a gentle enough curve to avoid pinching. Could you try putting a 90 degree elbow in the line to help there?
there was 2 hoses that were a problem. it may be even though they are fuel hoses but from the auto parts store they may not be as ridged as marine hoses? like you're suggestion on 90 degree elbow connectors where needed. that way I can put my new fuel lines back on. Thanks
Hey I have been watching your videos a lot and I have been learning so much about engines and engine care. I just recently bought a Hobie Power Skiff with a 60 hp mercury 2 stroke. I have noticed that there is gas dripping down from the engine down the side and into the water. I have tried to run the engine a look around to find the leak but can't seem to find the origin of it. I would love if you had any suggestions. Great job on the videos I love them. Keep up the good work.
There are a few possibilities. If could be a split hose or bad hose clamps at any of the joins. Could be a leaking fuel pump gasket or could be that the floats in the carburettors aren't sealing properly so the carburettors never stop filling and just over flow.
hahaa, maybe put it in the video blurb, so you can search for it? or add the first name of the people you add so they can find themselves too....reminds me i was going to order a shirt.
thanks for sending me this video. my debris is definitely those little curved bits of broken up fuel line. can i use any car fuel filter in my Yamaha? i was running a classic car one which was cheap and easy to see inside. the Yamaha one i have bought to replace it was very expensive and you can't see inside it easily and it's very small
Yes, I use glass filters bought from an auto parts store all the time. They are cheaper and in some ways better. www.ebay.com.au/p/?iid=332043560386&&&chn=ps I use them in the fuel line outside the cowling so they are easier to see.
Dangar Marine I'm so glad you said that because i don't think much of the Yamaha one for the price, it's a single disc rather than an accordion and you can't see inside easily. fuel flow does seem freer though she starts more readily and is a touch more responsive with the thin little Yamaha filter
Hi Stu, and hello from Texas. Where can I buy a shirt. I have Mercury that has the same inline fuel filter and I will be changing it and placing it before the fuel pump like you did. I have two questions, 1. Have you noticed any drop of power by placing it before the fuel pump and 2. Can I place the inline filter before the bulb. In other words between the portable fuel tank and the bulb. Thank you
He Pete, no, no change in power. Once the filter is full of fuel it flows at the same rate no matter where it is. Yep, you can put the filter before the bulb. It is a little longer to primer the filter this way but that is only an issue the first time or if you run out of fuel. Link to buy t-shirts is in the description.
Dangar Marine the reason I was questioning the placement of the fuel filter between the fuel tank and the primer bulb is because I didn’t know if the small fuel pump has enough pressure to provide adequate fuel flow first through the filter and then through the primer bulb on its way to the carbs...
hey stu love your vids !! just 1 question does running ethanol fuel through ethanol friendly lines damage ur motor (25hp tohatsu) cheers and will sure be buying one of those shirts :)
Hey Stu, thinking of replacing my fuel line and adding a water separating filter while I'm at it. Is 8mm the standard size? If I have a different size is there any harm in just replacing with an 8mm?
Unfortunately there isn't really a standard size, it depends a lot on the HP of the motor how much fuel it needs. You will see 6mm, 8mm and 10mm around.
They can be a bit fiddly, that's for sure. The trick is to separate them VERY carefully and make sure everything is kept in the right orientation. They can also curl up a bit once they are free so it is also important to make sure they aren't tucked under at the edges when you put the pump back together. Just go slowly and check all the edges before tightening it up.
Hi Scott, a lot of the time it depends on room. Proper spiral hose clamps work better, but these fuel system are very low pressure compared to EFI or something like a car cooling system.
Love the videos Stu, I'm not the 'safety police' but PLEASE wear safety glasses with a wire wheel (well any grinder actually). A flying piece of wire penetrating the eye would not be pretty.
Yes, you are right, I am a bit slack when it comes to safety gear and I know how nasty it can be to have something stuck in your eye. That's a trip to hospital I'm not keen to repeat!
I fell victim to the ol' "I'll just snip this piece of tin with the snips and the glasses are on the bench 20 metres away" . Lost the vision in my right eye. The irony of the whole thing is I had worn safety glasses for the entire job and this was a 'last minute snip'. Great videos and looking forward to my next Danger 'notification'
hi dangar. I started my boat the other day and when I did there was a weird noise coming from the water pump area then it stop. is that something i should worry about, or is it just sucking water?
Hard to say without hearing it but if it went away and it was a type of sucking sound I wouldn't be too worried, could have just been something around the prop. If you are worried it is a gearbox problem I would drain the oil and check it for water or metal fragments.
I can not answer where...BUT take a Magnet with you when ya shop...Use magnet to verify they are SS. Lots are SS band and screw ass is not(meaning that screw ass will corrode and BITE ya over time...
Stu that looks like varnish from fuel that has dried out in the fuel line rather than the line itself degrading. Either way replacement is probably the easiest way to solve the problem.
I'd be interested to learn if it was, because it is such a perfectly even layer or flexible material. I would have expected any varnish to be more on the bottom of the line rather than evenly around the outside. I've been wrong before though. ;)
It would have been interesting to cut a new piece of line open and dissect it, in fact I've also been meaning to cut a primer bulb open too so maybe that can be a view in its own right. I know what you mean about modern chemistry being understood, I'm personally more suspicious of fuel additives.
@@terrywilson1813 I renew all the line and bubble to engine, changed all the filters then put Lucas injector in 24 ltr fuel can and ran it on idle until it used all fuel. Every time it ran rough I checked the plugs and they were full of carbon so cleaned and put back in (did that four times). Then fresh fuel gave it a good run full power and alls good now running sweet.
You have by far and away the best marine repair themed channel I have found. You have personally saved me countless hours in figuring things out and thousands of dollars in shop costs.....thank you!
Agreed!
Thanks mate, happy to help!
yeah, me2.
Me as well, thank you
Another timeless video that has helped us renew our fuel lines and made a problem go away. Many thanks Stu!
You're welcome. :)
Thank you, I like the fuel filter before the fuel pump you are good marine mechanics.I be looking for more of your videos,from U.S.A.
I Love your channel, you explain every detail leaving out nothing, your truly a Man's Man
Thank you from Nebraska
You are a natural mechanic that does excellent work. Great vids.
Thanks John, glad you are enjoying the vids.
Perfect timing..
Just today I was just looking at the fuel lines on my '75 70Hp Evinrude and thought they probably need changing.. I wonder if there is anything else to consider. Came in and found this video - thanks for the heads up on the clear filter pre engine - will definitely be installing one now....
Love the channel, you have helped me out with a multitude of different service items on my boat. I definitely owe you a beer or three,...
I love those glass filters. You can get them from most auto parts stores without paying silly marine prices. Looking forward to those beers. ;)
I replaced my fuel line about a week before this video came out because the primer bulb wasn't getting hard. After seeing this video I pulled my fuel filter and it was filled with the lining from the inside of the old fuel line. Awesome timing on releasing the video. Keep up the awesome work!
As many here agree.. Awesome videos! well explained with details that help us to understand how things work and encourage us to try them out without being scare of "breaking things". Appreciate the time you spend making and editing your videos.
I've personally tried a few things already and they came out really great.
Great job, mate!
Thanks mate, glad the videos have been helping you with your boat. :)
watched the video on perished fuel lines. didn't know what the inside of the lines could look like till I watched this video. it for sure may solve my issue with my Mercury 2 stroke. my ball hose like that I took off for the winter is old and the gray material like in your video. I have a new one that came with my new 6 gal. external tank and will try that soon. also will replace the other fuel lines as well on the motor to be safe. already replaced the fuel filter but like your idea on installing it before the motor to keep an eye on it. watching all your videos since they are so educational plus the weather here is keeping me house bound. haha. one thing I don't like is not knowing something and how it works. keep up your great service to the mechanical world out here.
Thanks mate, glad the videos have been helping you with your boat. Not long until the warmer weather now!
I just replaced all the plastic hose clamps with stainless on my 1990 johnson 175gt, from the carburetor to the new fuel primer ball. A big difference as far as holding prime and oil leaks under the cowl. I replaced some of the hose. I had no idea hose would deteriorate like that. I will be getting a clear gas filter(since I need a new one anyway) Thankyou for your help.😎👍
one of the best canals,,,in all the seas, thanks from cancun Mexico
Thanks mate, glad you like it. :)
Great video as usual Stu! I replace lots of fuel line every year. When ever we repower a boat or rebuild a power head, we always inspect the boat's fuel system and replace fuel lines as needed. Ethanol fuel sucks. I also ordered a shirt from you too!
Thanks Will, its certainly better to change fuel line before this happens. Don't forget to send me a picture of you wearing the shirt!
I'll send you a picture once I get it!
I had a good laugh at the teleporting beer there. Enjoyed the vid as usual, take care Stu
Thanks Jake, glad you enjoyed. ;)
Thank you, this was the most helpful video I have seen personally!
Hi Stu! Had to jump through some digital hoops to be able to comment- just figured it out. I've been looking at your videos for quite a while and I can't even tell you how much I have learned, so keep em coming. My local mechanic seems to have similar knowledge and attitudes (and I have actually told him to look up your videos) and you are both hoots. At least after watching your stuff, I can talk somewhat intelligently about whatever problem I'm having with my boat. Anyway, great stuff!
Hey Gary, thanks for taking the time to sign up and comment. Glad to hear you've been enjoying the videos. :)
Hope to get to Australia one day. And you come to Pensacola Florida
Would love to come to Florida again one day!
Great information Stu this happened to my mercury and had merc fuel line you showed which I replaced but didn't check fuel pump so that's the next job. I was having trouble tuning it but with new fuel lines it was so much easier. Thanks again cheers mate
Thanks John, it's amazing how often fuel lines are overlooked when diagnosing a motor that won't run properly. Well worth checking the fuel pump and carburettors as all those bits of debris will have gone somewhere.
I believe that you have found my problem even if it's not I'm getting that Gray Line off my boat thanks
Fantastic, this fixed my problem had powering down
Issues, changed my fuel lines which were the same lines in this video, took the boat for a run and perfect, thanks heaps.
Thank you so much for your response and helpful advice. Ill try to check all those things you listed now or next season. I am in the US so we are going into the winter season. If you ever get an engine in the shop that has that kind of problem it would be even more helpful if you did a short video on diagnostics and solutions. Thanks so much!!
Will do!
Your the best my man love ur classes I’m learning a lot 🇦🇺🇦🇺🇦🇺
Your video was extremely helpful. During my vacation started to notice my boat was starving for fuel at full speed, it idled fine but at full speed kept 'bogging out' (60hp Merc 4 stroke) Upon inspection I found lots++ little black pieces of debris in the fuel tank. So the mechanic at the campsite and I drained out as much fuel as we could from the tank and then he replaced the primer bulb and changed the fuel filter. Back out on the water and the problem still exists so he insisted on a number of different things but my good judgement told me to just hold off until I could do some research of my own, which led me to your video. Everything you described is exactly what happened to me. I am very confident the problem will be fixed finally by me because of you. Thanks a million for saving me much money in unnecessary fixes. Will also be installing a water fuel separator. Question: can I install a water separator under the floor accessible from pop out inspection plate because i have a fully floored fishing boat . THX.
Hi Mitch, glad the vid helped you. Yes, if you have room you can install the fuel filter under the floor no problem.
You are an awesome teacher, thanks a bunch !
Not sure how old the fuel lines are, as they were in place when I brought the boat. Like you said it's worth keeping an eye on these things having foreign bits in your fuel is bad news.I wasn't 100% convinced it was the fuel pump diaphragm, the guy at the boat shop probably wanted to get more money out of me. The fuel pump kits wasn't too expensive any eay so I thought what the hell, it won't hurt and I got to learn some thing.
It never hurts to replace things before they fail, particularly if they aren't too expensive. Fingers crossed it will run sweetly for years to come now. :)
thank you!! you fix my problem!!! gracias hermano! (from argentina)
You're welcome. :)
Thankyou very much for your tips and tricks. Regards from Denmark
Thanks Richard, you're welcome. :)
Hi really like your videos you are helping me with my 150 mercury thank you
thanks heaps stu have a good day mate
Thanks Jack, you too!
Hey, Stu...Like Florida Fly Fishing said, you have THE BEST Marine channel on TH-cam. As long as we are 'discussing' fuel systems, maybe you can point me in the right direction for a winter project I am planning. As I mentioned in another post on another one of your vids, I am redoing a 17 foot early 1960s MFG fiberglass hull boat. One of the things I want to change is I want to install an in-floor fuel tank, not only to increase fuel carrying capability (I'm thinking a 25 gallon poly tank) but also to 'free up' valuable floor space used now for extra 5 gallon cans. I know how to install the tank and vents, but am unsure on plumbing the fuel lines or any electrics. Also, will I have to put an external pump on the lines? Do you have any videos aimed at in floor tanks or can you recommend where I can find any? I plan on powering the boat with at least an 80 hp motor. I originally was going to convert her to a 350 inboard, but....too much work. Our eventual plan is to change this boat that someone modified for skiing back to a boat primarily used for fishing and family cruising on the Great Lakes here in the USA. Love your channel and can't wait to see more on your boat build.
Hey mate, I think underfloor fuel tanks are a good way to go and I'll be doing some research on them soon as I'll be installing one in the boat I'm building. I don't think you will need extra fuel pump beyond the one in the outboard, it just might take a bit longer to prime. I imagine you could use a bit of hardline with a fitting closer to the outboard itself, but it wouldn't surprise me if many installations just have regular fuel hose all the way from the tank.
Hey Stu, great videos.
I've watched them all.
Just today I did a carb rebuild on a 15hp Yamaha 2st. A stroke of luck, I watched your vid on this motor the night before by coincidence.
The girlfriend can't listen to another video late at night, but I love it.
I don't suppose you have seen too many TLDI tohatsu motors, if you ever get your hands on one, a vid would be tops.
Maybe some synchronisation with a timing light on the small two strokes is coming soon?
Thanks againMattGladstone
Hey Matt, I actually have a Tohatsu TLDI motor in the workshop right now that belongs to Paul who has been in a few of the vids. The plan is to fix it up completely so will be doing a few vids on it for sure.
Well took a break from the outboard engine today to my Honda engine pressure washer not running. used my new vacume pump with gauge to test the carb that wasn't getting fuel in the bowl? took all the fuel lines off and found a in line filter in the hose going into the tank. Looks suspect for being clogged so cleaned it the inside of the tank and blew all after carb cleaner with air. put it all back together and runs like a champ. guess I need to do the same with the boat motor. like the small vacume pump works great.
Nice fix, those vacuum pumps certainly are handy for a whole range of things, that's for sure.
thanks, I'm surprised your there today on a Sunday? or whatever it is down there?
Was having Monday morning coffee when I replied.
did anyone notice the beer appears and disappear at 10:12
Yep... maaaaaagic !!!! LOL
*waves hand* This is not the beer you are looking for...
typical Aussie, beer dident last verry long.
Subliminal message my friend. 🤣
Stu, the local Pep's has two fuel line types in 8mm. Both are stamped that they meet the same standards. However one is 'rated' for carburettor feed line, the other is fuel injected fuel line. The difference is the carburettor line can handle a lot more vacuum (external ) pressure before collapsing (8lbs apparently) , while the injection fuel line only handles 4lbs of vacuum, but a few hundred PSI internal pressure. I doubt an outboard fuel pump could drag more than 4lbs vacuum (carb floats/needles don't like much more than about 2lbs of pressure anyway) so either should work, but apparently there is a difference.
And can you talk to the TV/Foxtel people? I like the length of your product placement ads a lot more than theirs!
Hey Ron, I should have mentioned that low pressure hose would be fine as EFI hose is a lot more expensive and certainly, as you say, not necessary. One of my best friends works for Foxtel, I'll have a word with her. ;)
very good video friend. thanks
Thanks bud your awsome !!!Watched all your videos... I have save alot of $$ because of you.. Keep up the great work, take cares!
You're welcome, glad the videos have been helping you!
haha i love the magical bottle of coopers. nice touch. nother great video, cheers :)
Thanks Andrew, glad you enjoyed. :)
Thank you for all the great videos. What brand/rating fuel line works best. The grey line with liners seem to break down and clog the fuel pump and filters. Is there a certain A1 black hose for under the cowl?
stu thanks for the video
You're welcome. :)
My favorite part of your videos is that you don't spend 10 minutes explaining that we should disconnect the battery
Disconnecting the battery reduces the changes of exciting footage. ;)
Good video, i use 100% gas, my filter is plastic though, looks kinda brittle, have you done a video on filters yet?
I've got this one on adding a water separating fuel filter th-cam.com/video/L4FnuY989w0/w-d-xo.html but I'd like to do another on these smaller inline fuel filter.
you are freaking awesome man! Today i just my new fuel filter and fuel pump rebuild kit from ups. I asked you when you did the tohatsu timing if you could do some Mercs and now you have it. I told you about the leaking oil in the cowling. You actually answered one of my questions in the vid. Mercury uses zip ties on all there lines and i wanted to see if i could use stainless like you did in the video. Since i (think) i found my leak, i wanted to add new hoses under the cowling. But i don't know if i need to have the exact diameter or could it be a little smaller or larger. If i go on boats.net i see the hoses are different diameters(and expensive). Could i just find the diameter from the parts list and go to a auto parts store and cut my own? My leak seems to be coming from the oil pump(either hoses at the pump or the pump itself). What i did notice looking at the service manual is that mercs have two line markings, one on a lever and one on the pump bracket that need to line up. Mine wasn't lined up so i had to tighten the pump linkage to get them to align at idel. I took it as idle meant not to move the carbs or throttle and set it there. Thats what the manual didn't tell me. Thanks again and post me the link for your shirt. I will order one monday. Sorry for the long message.
Thanks mate, and yes, get the diameters from the parts sight and buy good quality hose from an auto store. Marine parts are alway more expensive for no good reason. T-shirts available at dangarmarine.com.au/collections/merchandise/products/dangar-marine-t-shirt Be sure to send me a photo if you get one!
+Dangar Marine will do! Thanks
Good on ya Stu!! another good and informative vid. Thanks for the mention and I love the shirt. I had a problem with fine black particular bits building up in my carbi and making the motor run very rough. I had black rubber fuel lines after my fuel water filter, not sure how old it was. I didn't notice any bits in the filter under the cowling be for the fuel pump, it looked like it could have been from the fuel line (I'm only saying that because the bits in the carbi are same colour as the fuel line) or may be fuel pump diaphragm I have replaced both and there's on problem now. could the black fuel lines break down in such a way they produce fine bits the could clog carbi jets? or was the black bit just a build up and I didn't need to replace the lines or diaphragm.
I'd say you did the right thing by changing the lines. The diagram can split but I've never seen them crumble like the debris you are describing. Do you know how old the lines were?
Great video, thanks for sharing.
I wish I saw this video before installing some 'grey' fuel lines below my deck.
I ended up having to replace them due to fuel vapour (smell) passing though the walls of the hose and stinking out the bilge.
Could have been dangerous over time too?
like you suggest people should only use the Marine rated fuel hose stamped with: SAE J1527 ISO7840 USCG A1
I need to fit some new fuel line to a 30 hp Honda four stroke. Should I go with 3/8 or 5/16 line? My boat is 22 feet long. Can I make the line 20 feet long and still draw fuel? What is the band of the inline fuel filter that you use for the clear fuel line (outside the motor)? Should I use the same stainless steel fuel line hose clamps for building my fuel line? Thanks!
Great video Stu! What are the non marring raised grooved hose clamps, i can't find them, just need a mfr or part number so I can order some, great video!
These are the ones we use eshop.wurth.com.au/Fuel-hose-clamp-Power-HOSECLMP-FUEL-B9MM-WS6-10-16-/053921016.sku/en/US/AUD/
Hi Stu. Great video. I purchased one of your t-shirts and I am very fond of it. Thanks for the info on hose clamps. Question regarding the glass inline fuel filter. I have a new Yamaha F6C with approx. 1.5m of hose from tank to engine. Do you see any issues installing the inline glass filter just after the priming bulb while leaving the under-cowling filter in place?
good thing I tried to start the merc today to check the gears. it wouldn't start? first check spark and was good then opened up the bottom carb and was empty. 2 of the fuel lines I put in were pinched. good thing I kept the old ones with the bends. how do you take a new fuel hose and put a bend in them? do you put something in them that has the curve you want and heat it up on a bench?
Hi Tim. Good question. I've never made a bend in a fuel line, I've normally found them to follow a gentle enough curve to avoid pinching. Could you try putting a 90 degree elbow in the line to help there?
there was 2 hoses that were a problem. it may be even though they are fuel hoses but from the auto parts store they may not be as ridged as marine hoses? like you're suggestion on 90 degree elbow connectors where needed. that way I can put my new fuel lines back on. Thanks
Wearing some goggles when you use that wire wheel would be a super, super smart idea. Unless you want to go for the authentic pirate look.
Hey I have been watching your videos a lot and I have been learning so much about engines and engine care. I just recently bought a Hobie Power Skiff with a 60 hp mercury 2 stroke. I have noticed that there is gas dripping down from the engine down the side and into the water. I have tried to run the engine a look around to find the leak but can't seem to find the origin of it. I would love if you had any suggestions. Great job on the videos I love them. Keep up the good work.
There are a few possibilities. If could be a split hose or bad hose clamps at any of the joins. Could be a leaking fuel pump gasket or could be that the floats in the carburettors aren't sealing properly so the carburettors never stop filling and just over flow.
a-huh and we found the start of the picture board idea !
I couldn't have told you that myself, I'll have to remember that for years to come. ;)
hahaa, maybe put it in the video blurb, so you can search for it? or add the first name of the people you add so they can find themselves too....reminds me i was going to order a shirt.
thanks for sending me this video. my debris is definitely those little curved bits of broken up fuel line.
can i use any car fuel filter in my Yamaha? i was running a classic car one which was cheap and easy to see inside. the Yamaha one i have bought to replace it was very expensive and you can't see inside it easily and it's very small
Yes, I use glass filters bought from an auto parts store all the time. They are cheaper and in some ways better. www.ebay.com.au/p/?iid=332043560386&&&chn=ps I use them in the fuel line outside the cowling so they are easier to see.
Dangar Marine I'm so glad you said that because i don't think much of the Yamaha one for the price, it's a single disc rather than an accordion and you can't see inside easily. fuel flow does seem freer though she starts more readily and is a touch more responsive with the thin little Yamaha filter
Great video. I tell people all the time never ever use that gray fuel line. Always use neoprene. That gray stuff is junk
Another good job, when's the next green machine vid
Thanks Jake. Next video on the Green Machine will be in a few weeks when I set it up for fishing! :)
I put heat shrink on the line that is exposed to sun, also write the replacement date on the heat shrink somewhere.
I love clear fuel line but it only lasts about 1 year before it's hard as a rock. I find it useful temporary to diagnose stuff though
Hi Stu, and hello from Texas. Where can I buy a shirt. I have Mercury that has the same inline fuel filter and I will be changing it and placing it before the fuel pump like you did. I have two questions, 1. Have you noticed any drop of power by placing it before the fuel pump and 2. Can I place the inline filter before the bulb. In other words between the portable fuel tank and the bulb. Thank you
He Pete, no, no change in power. Once the filter is full of fuel it flows at the same rate no matter where it is. Yep, you can put the filter before the bulb. It is a little longer to primer the filter this way but that is only an issue the first time or if you run out of fuel. Link to buy t-shirts is in the description.
Dangar Marine the reason I was questioning the placement of the fuel filter between the fuel tank and the primer bulb is because I didn’t know if the small fuel pump has enough pressure to provide adequate fuel flow first through the filter and then through the primer bulb on its way to the carbs...
Love the channel, always informative and good info. What camera and mic do you use?
Thanks Jeff. I use a Panasonic V770 camera and a Rode film maker mic.
I was out 2 nm yesterday and my motor started to slow down and kept getting worse and worse untill I was stranded, I hope this was the problem.
Can you make a blackboard explanation of the fuelpump some time?
Also show single, double action
Sure, I'll add it to the list. This video has some information in it if you haven't seen it th-cam.com/video/_ezu96S7e14/w-d-xo.html
I have red specs in my gas tank, should I replace the red plastic gas tank? I cleaned it out a month ago and now pieces of the plastic is in my gas
I just did the same job about a week ago on my boat
Always nice to know it is good to go for another few years. :)
Dangar Marine yes it is another good video as always great job
hey stu love your vids !! just 1 question does running ethanol fuel through ethanol friendly lines damage ur motor (25hp tohatsu) cheers and will sure be buying one of those shirts :)
It isn't recommended as it can also eat some of the seals and the diaphragms in this style of fuel pump. Ethanol will also absorb water over time.
Hey Stu, thinking of replacing my fuel line and adding a water separating filter while I'm at it. Is 8mm the standard size? If I have a different size is there any harm in just replacing with an 8mm?
Unfortunately there isn't really a standard size, it depends a lot on the HP of the motor how much fuel it needs. You will see 6mm, 8mm and 10mm around.
Dangar Marine thanks mate, measured mine and it seems to be closer to 10mm. Will use that.
What if you start the outboard with the gas line hooked up and it runs really rough so you disconnect the fuel line and it runs perfectly!
I've heard that fuel pumps can be fiddly when you separate them and disrupt the gasket even if you replace the gasket. Any advice on that issue?
They can be a bit fiddly, that's for sure. The trick is to separate them VERY carefully and make sure everything is kept in the right orientation. They can also curl up a bit once they are free so it is also important to make sure they aren't tucked under at the edges when you put the pump back together. Just go slowly and check all the edges before tightening it up.
Johnson 200 ob oem specs say 3/8 and 5/16 for fuel feed to engine? Which one? Help 😅
Why hose clamps on some joints and wire ties on the motor only? Shouldn’t you have clamps on all joints? Thanks Stu.
Hi Scott, a lot of the time it depends on room. Proper spiral hose clamps work better, but these fuel system are very low pressure compared to EFI or something like a car cooling system.
Love the videos Stu, I'm not the 'safety police' but PLEASE wear safety glasses with a wire wheel (well any grinder actually). A flying piece of wire penetrating the eye would not be pretty.
Yes, you are right, I am a bit slack when it comes to safety gear and I know how nasty it can be to have something stuck in your eye. That's a trip to hospital I'm not keen to repeat!
I fell victim to the ol' "I'll just snip this piece of tin with the snips and the glasses are on the bench 20 metres away" . Lost the vision in my right eye. The irony of the whole thing is I had worn safety glasses for the entire job and this was a 'last minute snip'. Great videos and looking forward to my next Danger 'notification'
Wow, you were certainly very unlucky, sorry to hear that. It's a good reminder that you can never be too careful.
What are the fuel line size at carbs on. 1999 c50TLRX Yamaha please.
Does pre-mixed fuel shorten the life of the hose? Each video is turning into an easter egg hunt...
That's a good question. I wouldn't think so, the oil isn't very corrosive in any way.
hi dangar. I started my boat the other day and when I did there was a weird noise coming from the water pump area then it stop. is that something i should worry about, or is it just sucking water?
Hard to say without hearing it but if it went away and it was a type of sucking sound I wouldn't be too worried, could have just been something around the prop. If you are worried it is a gearbox problem I would drain the oil and check it for water or metal fragments.
where did you get those stainless steel fuel clamps from?..Thanks
I can not answer where...BUT take a Magnet with you when ya shop...Use magnet to verify they are SS. Lots are SS band and screw ass is not(meaning that screw ass will corrode and BITE ya over time...
I miss the Green Machine with Marvin on it.
Stu that looks like varnish from fuel that has dried out in the fuel line rather than the line itself degrading. Either way replacement is probably the easiest way to solve the problem.
I'd be interested to learn if it was, because it is such a perfectly even layer or flexible material. I would have expected any varnish to be more on the bottom of the line rather than evenly around the outside. I've been wrong before though. ;)
It would have been interesting to cut a new piece of line open and dissect it, in fact I've also been meaning to cut a primer bulb open too so maybe that can be a view in its own right. I know what you mean about modern chemistry being understood, I'm personally more suspicious of fuel additives.
Just had this on mine causing engine bogging down and losing power.
Mine is too I think it either a bad line or fuel filter
@@terrywilson1813 I renew all the line and bubble to engine, changed all the filters then put Lucas injector in 24 ltr fuel can and ran it on idle until it used all fuel. Every time it ran rough I checked the plugs and they were full of carbon so cleaned and put back in (did that four times). Then fresh fuel gave it a good run full power and alls good now running sweet.
Sneaky coopers 😂
Glad someone noticed. ;)
Subliminal messages are far shorter Stu, 1 second is about 25 times too long.:7)
@@DangarMarine Extra Stout!!
And here is was thinking the grey fuel lines lasted the best
I don't know why they are so popular in the marine world. I'd really like to do more research into them and find out what the story is.
looks like you discovered cholesterol in boating.Dr dangarStu,I presume.
LOL. Yes, I've been working on some pills to solve this exact problem!
quicksilver lines are the worst