Follow These Steps! Why Outboards Run Out Of Fuel!
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As an automotive mechanic and owner to a "new to me" 20' bay boat, I frigging LOVE this channel! Thanks man!
Man, that equipment would be a lifesaver for me!! I'm a Mobile Outboard Tech in Boston, MA and had a NIGHTMARE last season. 31' Contender with twin 300 HDPI's wasn't winterized (fuel system wasn't drained). Both motors needed VST cleaned, medium pressure fuel filters, medium pressure fuel pump, cleaned injectors and changed mystery filters. Motors still ran like crap, stalled out, idled poorly and no WOT. The owner assured me the fuel system on the boat was fine (fuel lines, water separators, tanks, pickup tubes ect.). Well after a couple thousand in motor work, I insisted we take a look at the boat fuel system. Well turns out the pickup screens were clogged and causing the fuel pressure to drop from 980PSI to 150PSI!! I use ALOT of your tips/tricks day to day, and I cannot thank you enough for taking the time to make these videos! Thanks AGAIN! #gasleak
Man 300 HDPI's can be a nightmare. Can't imagine doing the fuel systems on TWO of them. Good work mate
You “bail out” Chris in Gloucester?
MAT I'm Confused?
@@ravosamarine nevermind, i thought u could be chris from gloucester who does mobile outboard/boat repairs.
MAT Gotcha. I am Chris and manage Ravosa Marine Services. We do service Gloucester, might be another Chris you are thinking of however.
We had a boat that would fall on its face just randomly, we changed a bunch of things trying to get rid of the problem , it turned out it was the internals of the brand new oem primer bulb. Love to watch y’all’s channel , picking up bits & pieces to help with the next adventure, thanks .
Great video, never thought about using a clear hose to check for air leaks. Having a #gasleak sucks! You guys are the best for sharing all these tips and tricks! Thank you
Hey Aaron, great video as always. Everything was on point. Don't forget about clogged/heavily restricted fuel tank vents, that will also prevent fuel flow, especially if the tank is a newer EPA style tank. #fuelproblems #nofuel #outboards
8months after buying an old boat, replacing the water/fuel separator the filter went bad. Reverted back to this video as to why the engine didnt have fuel and it saved the day. TY and keep @ it
Brilliant thank you, so informative yet so simple, I had a stroke 13 years ago, I was totally paralysed down the right hand side and blind in the right eye, To see me now you would never believe I ever had a stroke. but I have short term memory loss and I can't learn nothing new, I don't have a boat yet but I want a Honwave T32 IE with a 15hp outboard. I am saving as many good channels as I can to learn about my new hobby , after my stroke I was watching kids channels to teach me things because they put it over so simple I can take it in. Your channel is like that for me I understood it all, That I am more grateful than you can imagine. Thanks for sharing Ray K. UK. YNWA.
I once had an 85 Johnson that would suddenly just run out of fuel. If it sat, off, for a few minutes, it might run for several more hours before acting up again.
Of course, catching it in the act became a challenge.
Starting at the engine and working toward the tank, we finally found it.
Someone, probably me, had dropped the cap from a plastic oil container in the fuel filler neck. That cap worked its way into the tank and would sometimes get sucked onto the pick up tube.
We removed the tank, cleaned it out and that engine ran for many more years without so much as a hiccup.
My last fuel problem stemed from the ethanol gas eating the inside of the fuel line and clogging it down. A new ethanol ready hose cured the problemo. Yes I know no ethanol but I run additives and have no problems for over 10 years except the hose. I also run the fuel out of the engine when sitting.
Good info. I just recently had a fuel issue and went about the fuel line inspection process pretty much the same . I found that all and I mean all the ends of my fuel lines had gotten hard and all were letting air in the line causing my fuel system to not fill up properly. This new video you put out taught me a new way of checking it. 👍
Great!
Would love to see a video detailing the making and uses of this test kit and other testing kits you make. GOLD!
Sure wish I had seen this video BEFORE I put my boat in the shop. 4 weeks and $1000 later they diagnosed the anti siphon valve issue. I need to keep up with your videos so I can learn more about my boat. Thanks
Having a lot of issues with my fuel; glad I’ve subscribed to the channel, I’m hoping it will iron out the issues
Went nuts trying to troubleshoot this on my 94 Yamaha 150. One second she was running excellent, next thing I know she won’t go above 2,000 rpm without stalling. Replaced both fuel pumps, spin on filter and bracket, removed the ASV and checked the pickup, new OEM primer. Still no dice. Replaced all hoses EXCEPT the one in the rigging tube to engine. Well, when I pulled that out the problem was very apparent. The hose was swollen right were the rigging tube makes it’s bend on the way up to the engine. Looked like a python that swallowed a bunch of rats! Snaking in a new fuel line resulted in like new performance! Change your lines every few years. The ethanol will take them out. Even if they look good where you can see them. They could be deteriorating in places you can’t! #gasleak
I have gone through my entire fuel system from tank pickup to carbs. I pressure tested the fuel line and connectors under water and looked for bubbles - there were none. I put on some clear fuel line as shown and saw lots of air getting in. It turns out to be an el-cheapo Walmart fuel connector. Replaced with an OMC and it cleared up my problems. Thanks for the tips!
After I rebuilt my classic mercury 500, I had a major problem with the carbs leaking fuel out the overflow vents. After a new set of floats and tons of settings and resetting the float level, I finally got it to seal up. #gasleak
One thing worth remembering is your fuel tank breather, external tanks have a valve that needs to be open in the running position and closed when not in use, easily overlooked.
This is helpful. Took my first boat out today ( 2006 Ranger Z20 with a 225 Yamaha Vmax).. engine was running great then an hour in to the day cut out. Primer bulb seems cracked and work along with a section of hose on both ends. I hope this is the issue and not something more serious or complicated.
#gasleak ..Had fuel hose inner lining become hard/ brittle and start separating from the outer rubber (from using ethanol).This contaminated the system and also resulted in a "flap" / or check valve effect causing a fuel restriction. Upgraded the hoses , replaced filters and the fuel pump and that solved the issue. Thanks for this informative tutorial on diagnosing the fuel system.
A few stories for fuel problems.
While fueling the stern tanks an employee of the fuel docks went to the bow to help out, dumped 150l of diesel in my bow water tanks.
Another one, while fueling my stern diesel tanks grabbed a hose off the rack under the label "diesel", began fueling. After a while pulled the hose up to check level and noticed it didn't look right. Yup, water. A couple hundred liters of water in my fuel tanks.
Pumped out the tank, got a few spare sets of water separator filter media.
After running for an hour drained the bowl, after a few more changed the filters.
Of course as soon as I got into rough water the turbulence stirred up all the water and the vacuum pressure started going way up on one engine, so shut down one engine and did a filter change while the boat drifted in huge waves. PITA.
Now the good ones, 21' landing craft with very low hours, took it offshore and the fuel pickup in the tank came off.
Had to disconnect fuel line, stick it in a 20l portable container and siphon fuel into the engine to get home.
Don't know if you care about trucks, but two good ones there too.
Loaded truck, fuel pump quit. Siphoned some gas out of the tank and put the portable container on the roof, a piece of insulation froman electricla wire harness for trailer lights was salvaged and used to siphon form the roof straight to the carb.
Funny one; car hit a big pot hole, stopped running.
After a while figured out it was no fuel, searched all over, eventually found an emergency fuel shut off switch in the trunk that was flipped to off by spare tire flopping around in the trunk.
Got more, but...
Thanks for sharing!
I haven't run dry yet but this is my first year as a boat owner. I have Simmons Sea Skiff 20' with a Tohatsu 70HP. Time will tell.
I have had to replace my hose all the way from the pickup on the tank to the engine on my 225 opti it was old and like 18 years old and was sucking air every where. Very good video that you guys did. #gasleak
Very informative! Thank you for dropping some knowledge
Great tips, this weekend i will dubble check my fuellines, safety isue, thx
A really common problem I had while living and working on a boat was water contamination in portable fuel containers for my RHIB.
Doesn't seem to matter what kind of fuel additives or containers are used, all the respiration of moist air eventually gets some water in there.
Usually only problematic when running low RPM in rough weather for a long time, the low fuel flow rate would allow accumulation, and the turbulence would stir up stuff in the tanks a little more.
Anyways, with my Yamaha outboards they typically had three carbs, and the lowest carb would always be the first to get a little clogged up.
That lower cylinder would cut out and lose a little power, whenever that happened I could just turn to run in the trough of the waves, open up the throttles and clear out the water just by running high RPM for a few seconds.
I did have to rebuild the carbs while offshore once, don't recommend it. In hindsight, more frequent fuel filter changes would have been the correct fix for that problem.
When I lived in whidby island Washington I had a 30’ boat with a 6 cylinder engine the fuel pump went out before deception pass and it took us about five hours to figure it out and get it fixed in able to get up the pass back to the trailer
I love your channel full of good tips. When I bought my boat I was fooled precisely because of a problem in the fuel unit (float on a 2007 Mercury 80 hp Efi) . But in the end it turned out to be favorable to my side. The technicians that the previous owner had wanted to sell a complete unit of fuel instead of making a diagnosis so the owner agreed to lower the sale price by 2k and the float Coste 70€ I only found out about this problem after I did the boat restoration.
Nice!
Just had a sneaky one. A nice Evinrude kept running out of fuel. No air bubbles or flat bulb. Lift pump and high pressure pump both had great output, yet still running out of fuel. Was the vapor relief HOSE (not the float switch) from the VST. That hose lets air/vaport out of the VST. The clogged hose was pressurizing the VST, not allowing fuel to enter. Was a pain to find, but I'll always remember that one. Hopefully, this tip will help you one day, as your tips have helped me in the past!
Was wondering if you could tell me how you figured this out. I think I am having the same issue. When I feed the VST (FSM) via a clean jar of fuel, I can see air bubbles exiting the fuel hose into the jar, like a steady stream. I am guess this means vapor in the tank has no other way to escape because my regulator is failing or the hose is clogged.
@@AlexTheMD ut was because everything else tested correctly. Lift pump was strong, high pressure pump was strong, everything clean. If the lid of the vst was off, it filled up fast. When on, it wouldn't. Process of elimination. I hope this helps.
My fuel line split open a few weeks ago! #gasleak are awful! Thankfully I replaced the line and we were good to go...
Great video about #gasleak. I didn't know about the anti siphon valve. I am building a small flats boat with an internal fuel tank and was planning to run the fuel line under the bottom deck but now I think I will run it just under the gunnel to avoid needing an anti siphon valve.
Yeah, just try to keep the hoses above the tank and then put a shut off on the water separator bracket :)
Engine was being starved of fuel immediately after a service. Priming with the bulb would remedy the issue for a minute or so. Issue was that service technician replaced the diaphragms in the fuel pump the wrong way.
You put together some awesome video's ! 👍👍💚
Kinked or pinched fuel lines is my first check. I always carry a Portable on board then water and other problems won't bother it. Fresh water things don't rust out I have had water in the main tank and it took all 3 of my water separators to get me home. Someone else drove I would bleed the water off as it went into the trap, the last 2 miles was nip and tuck to makes it back. One can polish their fuel by pumping out into the traps with a electric pump and then back into the tank over and over quite common with the diesel engines.
First thing to check is the primer bulb. I have replaced so many. Just because they are in the sun most the time
I absolutely love this channel!
Do you have any advice? My 26 foot twin engine four stroke outboard‘s bogged down while accelerating but then are fine until they reach about 4500 RPMs. The bog down is well at high on speed. However, while running when The primer bulbs are pumped it kicks up and runs fine for about 10 seconds.
I replaced the fuel water separator‘s, and I am waiting for the new fuel strainers. Since it is happening with both motors I’m thinking it may be the fuel pick up strainer in the gas tank. From there once determined it’s not any hoses,,I’m thinking about replacing the fuel pumps, which I understand are only good for about 3 to 4 years
Best channel on boats I've found! Thank you.
Welcome aboard!
Took my uncle out fishing told him to fill the boat went inside the bait shop to get bait came back out he pump 200 dollars of gas in my pole holder lol I'm a little late on the #gasleak though 😄 great channel wish you were in NJ I would bring my boat to you instantly you have save me a lot of money and time keep it going
Oh wow!
I was having issues with a new to me 98 Johnson Venom 200. Warning buzzer was going off. I am a shade tree mechanic and small engine guy for years but limited in big expensive 2 stroke experience....like none then. This is before wide use of the internet. Mechanic said it was my VRO and it was pumping too much oil AND carbs would need kits because "too much oil". I questioned him that "why do 3 year old carbs need kits if VRO is replaced and correct fuel is now pumping (thinking the "excess oil" would clear out quickly). He said "they just do". $1400 later get boat back, same issue. Primer bulb was sucking air....that's it. No recourse for "incompetent mechanic". Guess he needed a clear hose. I bought a manual. Thanks for your videos.
perfect video for my problem. Thanks
My 1998 Merc 150 freshwater went from running fine to barely running in 10 seconds. Struggled to get on plane and pouring smoke we limped back to the ramp where it died before getting on the trailer. Boat dealer said it needed a carb rebuild for $500 (3 carbs on this engine). I bought a kit and did the work myself. In the center carb I found what appeared to be drill shavings or chips from drilling - same metal the carbs are made of, I cleaned it out and It’s been fine ever since. Go figure. #gasleak
When first got into boating there was not much ethanol enhanced gasoline around, Fast forward 30 years after taking a hiatus from boating and we have ethanol, the destroyer of cheap fuel lines. When I ran into the problem it was a real head scratcher as I had changed the line from the tank to the primer bulb with one brand of line but ran out of that line. I substituted a lesser quality product from the primer bulb to the engine. This happened in the fall of one season. Come spring and I was ready to go fishing so as usual I got out the garden hose and muffs to test everything at home. Pumped up the primer to a firm feel and cranked, and cranked, and cranked. No joy. After troubleshooting I found that the cheap fuel line from the primer bulb to the engine had deteriorated and the lining turned into pieces and jelly that had gunked up the inlet at the engine. Took a couple of hours to figure it out but lesson learned. #gasleak
#fuelproblems #nofuel #outboards
Bought a pontoon boat last year, my first boat ever. Tested it in the yard w muffs, which Jiggled off n I ended cookin my water pump. Now I DON’T trust the muffs lol.
New water pump and put the leg in a barrel full of water, tested fine!! I’m so excited I even invite a boat load of friends for my maiden voyage....
During testing in my yard, the boat was bow down. In the water, the boat was stern down. Runs n idles fine until we get things loaded up n head out on the water. Then the engine dies as we’re about 50 yards from shore & absolutely no start after that. Guess I’m lucky I had lots of spare bodies to help me paddle our way... LOL
Lucky for us, our friendly neighborhood boaters out on the water seen our plight n offered to tow us back to shore, God Bless em!! They tried to help by assisting in some trouble shooting n checking n swapping plugs even, which he gave me.
Long story short, turns out there was jus enough water in the tank to put the pickup tube under water when I revved it up n headed for open water.
We ate our lunch in the shade of some big spruce trees that afternoon, luckily nobody got a sunburn that day lol.
Got her loaded up n home. Checked compression then I installed a cheap inline filter to confirm my theory of water in the fuel. Tested in the barrel of water in my yard, water showed up in the filter. I drained my tank n was AMAZED by how much water was actually in the fuel tank. Mounted a water separator and added a Jerry can of Fresh New fuel and away she went. Hasn’t hesitated at all since n I check constantly for fuel contamination.
Thanks for reading folks, HAPPY BOATING Y’ALL!!!
Those anti siphon valves have been the culprit 80% of the time. Great channel guys! ❤
Thank you!
Half way across the lake the primer bulb collapses and the motor dies. Got the boat home and checked the fuel line and didn't find a problem. Now that I see how the pickup tube comes out of the tank I can look at that too. Taking more tools with me the next time I go to the lake.
Tnk the information looking forward more awesome video
It seems that the metal canisters can rot out and leak in as little as six months. I have lost at least four. Also on that yamaha the fine screen on the side of the engine can clog but not enough to pass fuel with the primer bulb but enough that the vacuum operated lift pumps cant keep up. Cleaned or replace the fine mesh filter and off we go ! Thanks for the videos . Learn something every day !
Not a boat but my Ducati died one time when pulling into my driveway. Removed the gas filler and reached into the tank (drained first) and found that the hose popped off the top of the fuel pump. You could hear it turn on to prime but had no pressure. Took the opportunity to replace the fuel filter since it’s in the tank too. Enjoy your videos. Will have a boat some day..they will help me be ready. #gasleak
Great!
Usefull tips... Thanks for this video
My boat last summer would drain the fuel bowl dry on the carb when under WOT. I kept troubleshooting and it kept being the water separator. It turns out there was trash in the tank and it kept clogging filters quickly. Cleaned the tank and fixed the issue. #gasleak
Still new to boating , hoping my aircraft mechanic experience will help with working on the boat
My fuel issue was when a boat dealer at El Dorado Lake, KS did a recall repair replacing the fuel pump on my Mercury outboard & forgot to hook one of the fuel lines back up! MAJOR #gasleak
I am having this exact problem. Fuel pump loses prime and fuel runs out. You can see air running in the lines to the carbs
I have a boat that I laid up for a few years. It has a Yamaha 2004 F225. I took it to a recommended dealer. Fuel tank was drained and a 100hr service was performed. The engine idle rough and had no power and stalled when accelerating. After a back and forth with the service shop and $3500 later I decided I could do no worse.
Problem was the hose clamp at the pressure side of the primer bulb was not in the center of the fitting and was loose. Since then it ran well until this trip and after 15 minutes it stalled. I went through the "repair by substitution" game, figured out how to load the Yamaha 1.33 diagnostic on my old laptop and found the Air Flow sensor was bad and a hint that the shifter cable was a little worn. Adjusted the slide in the engine, replaced the Air flow sensor. The 1st tool I will pick up now is my computer.
Great guidance thanks
my boys used boat would run shortly and die out. new filters and checked the pump. all seemed ok. told him if it happened again to pop the cap off. he did. digging in further we found a plugged vent hose. #gasleak
Another great informative video
I've got to try again to fix an air leak on my 115 evinrude. I checked everything from the ball to the fuel pump. It ran good the first time out, I have to keep priming the bulb for about 15 minutes while the motor is running. Keeps loosing prime. Once I get it primed after that, it runs and starts all day w/o priming again. I'll have to look at the tank again. I looked there last year and it looked good. I'll put the clear hose at the connection to the tank this year and see if I see bubbles.
I love technicians tuesday!
Picked up a new to me boat with racor water separators sands the filters and installed new ever thing else wiring,engines ever thing! but one engine would get really surgery at WOT couldn't find what was the issue after months of trouble shooting i finally removed the racor filter mount only to find a bug nest inside the racor mount , it looked like a tiny cigar that was blocking the fuel passage to the outlet hose.
This past labor day Monday. Ran into fuel/air problem. F-ing choke wouldn't open and engine didn't want to run. then, i ran into issues with fuel leaking from near the carburetor. Unfortunately, i have a "rare" motor. Andi don't mean "rare" as in a unicorn, i mean rare as in i apparently have an ogre for an outboard so parts are super hard to find around here and a outboard tech that is willing to work on it is even harder to find. 1994-95 2 stroke 3 cylinder...wait for it... 70hp Force by Mercury Marine. I don't mind the bad reputation people say about them, the issue is parts are scarce.
Also in portable fuel tanks the fuel cap not breathing can cause issues
I’m trying to add a second fuel cell to my allsison where the oil reservoir used to be. I switched to an 8 cylinder 4 stroke
#Fuel Leak-Was out on the river and my fuel lines clogged because of ethanol fuel used by previous owner. I had to be towed in. Then I replaced all the fuel hoses, cleaned the carborators ane it ran fine from then on.
I have an 80s Evinrude 50 horse 2-stroke to very simple fuel system not a bunch of stuff in line like water separators and all that kind of stuff I never have one bit of trouble with it seems like the kiss principle works here
I have a Johnson GT 150 that runs out of fuel in the carbs. I suspect the VRO pump is failing because I have checked/replaced every part of the fuel system leading up to the pump and one time I got the VRO flow warning chime. Another thing is that it seems to run well when I pump the primer ball but it takes very little run time for the primer ball to get soft again and the motor to start starving for fuel.
Having a fuel issue right now on 2018 Mercury 150 4 stroke. Complete new fuel system from tank to water separator to motor. Still having an is with motor missing wen under a load.
3 years ago, I started to smell fuel only on a full tank. Thinking I had a hole in my tank, I removed the deck and pressure checked the tank looking for obvious leaks. Nothing was obvious, but a drop in PSI over night was telling me there was a problem. I had to use the soap and water method to find the small leak. The aluminum under my sending unit became corroded and a new gasket did not fix the problem. Had to install a new plate over the old hole and bad area. Tight to this day.. Hopefully.. #gasleak
2000 Stingray 220LX w/ 5.7 EFI Mercuiser kept burning up the high PSI fuel pump that feeds the injectors. I went through two warranty pump changes before the found the pick up tube in the tank was crushed from the factory. I have since also added a low PSI, high volume pump between the tank and the fuel/water filter. 18 years and 1200 hours later with no fuel problems (knock on wood). #gasleak
Thanks for the great video.
You bet!
I had small pieces of plastic in the pick up tube strainer multiple times which caused the priming ball to collapse
Loved your video very easy to follow. I have a Mercury 9.9 Pro Kicker that I want to connect to the main gas tank. Do you have a video that would give step by step instructions as good as this video? I haven't found any thing on the internet for this. Would love to see it. thanks.
#gasleak i had a i/o and switched it to an outboard on a bracket - the anti siphon valve turned out to be the cause of intermittent stalling on my outboard. took me almost a year to figure it out and a bunch of cash for new hoses and several replacement primer bulbs.
How about the time the plastic like liner in the non ethanol fuel line from my fuel tank separated a blocked the line
I have a fuel issue on my boat.. it’s weird because I have to let it idle for about a minute with warm up lever on.. once the rpms go up I know I’m good.. but it will die anytime before that.. once it’s running though it’s fine until I shut it off. Then I have to let it run for a while at idle again
My dad's 1992 Mercury 115 had a fuel issue where the air filter was soaked with gas from leaving the fuel line attached. The motor couldn't get enough air to run properly above 1800 RPM. Really wansn't a #gasleak issue but a fuel issue regardless.
I have what I think is a fuel problem now with my 2018 Suzuki 60 hp motor. It idles kinda ok, but when I give it power it feels and acts like it is running out of gas. I changed the fuel filter, spark plugs and put fresh gas. Also changed the connector that connects from the hose to the tank. It is still doing it, my next guess is changing the the low pressure fuel pump. What do you think?
great video. I have a #gasleak in my boat after filling it completely up
I had a garage boat mechanic do my annual service on a mercury pro xs 225. Idiot shredded the fuel filter on top of the vst so he thought he could use a hammer and flat head to remove it. I got it back and hit the lake without him telling me what happened. Engine was idling fine but would sputter and have trouble trying to plane. I went through 3 shops trying to figure it out and the last one did. There were little red chunks from the filter housing inside the vst that was blocking the float causing my engine to run out of fuel. So now I service the boat myself.
WOW! Ouch :(
Born Again Boating yup, tell me about it. I paid $120 twice for 2 diagnostic fees and dropped another $1200 for the final fix, but man it felt so nice to have a perfect running motor.
Love it! Trustworthy video!
Thank you!
I had a boat the other day that was only a year old that had the gas tank coming apart and filled the filter full of fiberglass fibers and would cause the motor to stall. #gasleak.
my primer bulb was plum flat while the engine was starving for fuel. though it could be the primer bulb so i went out and got me a new one. before i head out to the lake i done some test at home and let the engine idle. the new primer bulb was doing its job with no restriction on the fuel system. let the engine warm up and every thing checks out. head back out to the lake and found out the primer bulb suck in flat again. the engine will not run no more than 1500 RPM. it will sit there and idle but will not run. this time the problem gotta be related to the anti siphon valve or pick up tube. what a total nightmare.
I have 98 champion mean 16 with 90 Johnson . my fuel issue is the primer silionid let's fuel thru without power... changed the whole silionid and same issue
One common fuel issue I had was due to the Atwood fuel line has a inner liner that would crinkle up or deteriorate and block fuel from going through#gasleak
Not just Attwood. The blue fuel hose from a few years ago that was supposed to be "ethanol safe". It's crap. The liner separated when I changed out my ball. On the output side of ball it wadded up and was restricting the fuel flow. Took my awhile to figure that on out.
I am a commercial fisherman we have Fuel problems All the time I have a Honda outboard would like to see some Honda videos
I got a 2005 key largo with a 200 Yamaha HPDI and it does have that anti siphon valve.
I wonder if it need it?
I have a problem on a yamaha 40 hp four stroke it run out of fuel n when i pump the bulb it work find again for about ten minutes and then do the same thing
I replaced 40hp with 90hp Merc on pontoon boat. I installed water separator in-line and could not get primer bulb to get hard. It was getting difficult to start so I took it out of line and that seemed to correct THAT issue. I still have issue where motor tops out at 4000 rpm full throttle and after a few minutes suddenly breaks free to max rpm of 5500…?
#GASLEAK i have this same issue with my boat before wish that could have this other video from you guys early , thanks again
Can you use clear fuel line permanently? It would be helpful to see that your holding a prime and not taking in air at all times
Had an issue with my 05 merc, ran fine the season before, peeped it for the winter thought all was good right,,,,,,,, nope when I got it out for spring wouldn’t idle right wouldn’t reach wot rpms( I run mine right at 5900-5950) so it wouldn’t even reach 4500. Thought may be the fuel had gone bad, pumped the tank out put fresh 91-93oct in, ran a little better but nope not it,checked the fuel lines found they were collapsed and deteriorated so I changed them all figured I got it now ran better yet but,,,,,, nope still not reaching 5900. Changed both the water separator/filter, still not it, runs better, pulled off the carburetor cleans it still runs better but not it, rebuilt the carb still runs better but not it pulled the mechanical fuel pump off opened it up found crud from the lines that made it up through all the filter so I cleaned it but went to pull the diaphragm out of the other side low and behold the rubber retainer was torn since the rebuild kits were discontinued I got a new pump and guess what runs better than perfect, btw I’m a certified auto mechanic lol thanks for the vid thougj
2021(9 hours) 50 HP 4 stroke will not pick up fuel from the tank. If I pump the ball to keep the filter full it will run perfect. I pulled the mechanical fuel pump off the back of the block. I opened it up but it looks perfect. I can't find any air leaks and I also removed the VTS pump to make sure it was not stuck open or closed, it looks new inside as well. I'm not a part changer, I am a mechanic but at this point, it looks like the mechanical pump. Any ideas?
Thank you guys for the useful Chanel and videos.
Wish you all the best and keep up good work. #gasleak
Will a collapse line before the primer bulb cause the bulb go flat just stupid question
I’ve got a 2004 70 Yamaha 2 stroke
It only will run with the red fuel enrichment valve on, runs great with it on but not in normal or closed position
NEW FUEL PUMP
CARBS CLEANED
NEW GAS TANK AND PRIMER
any ideas? Maybe carbs aren’t cleaned well
hey! yeah, i have a problem on my 90hp 2001 mercury (4 carbs, not injection), it will idle and do low speed, but when its hot, it you try to rev it up, power up, speed up, it will start shaking and not go above 2.5-3k rpm.. ill check all my fuel lines from the tank to the engine this week, and as someone here allso mentioned ill have to check if the tank air vent, because i can pressurise the primer bulb, but the pressure wont stay there for more than a few sec, so i HOPE there is just a clogged / corroded outlet / airvent on the tank... ill try a sepparate tank today, skipping all the old lines, testing if my problemm lies in the onboard aluminium tank...which i hope.
Tanks for this video, very informative! #gasleak #airleak #fuelproblems
Hey on my 50hp out bord motor 2 stroke I get ges to the fuil filler fuil then motor runs a bit the it just runs out of gas thank you
Love the video’s
#gasleak - video is right on the money - once let the fuel separator filter go too long without being changed and actually got some water in system. Everything was fine after changing filter and draining water out.
Love these videos! Where is a good place to get clear fuel friendly hose?
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Marine motor needs a lot of preventive maintenance in order to perform as expected year round, only a few do.
All electrical contacts needs to be looked after if wanting that component they work with to last long, on old motors is a must do...