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- เผยแพร่เมื่อ 6 ก.ย. 2024
- How to make your Mercury outboard motor running from remote fuel tank as well.
Material List:
-Mercury/Mariner fuel line www.amazon.ca/...
- Fuel Line Connector
www.amazon.ca/...
- Female 1/4" Barb brass fitting ( Princess auto)
- 3 way Tee brass fuel hose fitting. ( Princess auto)
- Permatex High Temperature Thread Sealant
- 4pc 1/2" stainless steal pipe clamps. ( Princess auto)
- 1pc Washer with 1/2" hole
- 1/2" metal drill bit
- Large step bit for recessing the connector in to the wall. LEAVE ENOUGH WALL FOR SUPPORTING THE CONNECTOR!! ONLY DRILL 1/8" DEEP.
Great Idea Frank, Just finished mine, I have a 2020 which has a fuel pump, so I did run the T splitter after the fuel petcock and before the fuel pump, works great, glad I wont be filling up on the water and I will now use the original tank for an emergency aux tank .
Also thank you for the links to the parts
Thanks for the video. I've been yearning for this kind of solution. I get between a half hour to an hour on the internal tank, and it's been a problem refilling the tank in the wind and the waves. This may be the answer I've been looking for.
Are you able to rotate the motor 180 degrees to get to reverse?
Thank you. Just got one yesterday.
Hey bro how did you get this to work with your motor does it have a fuel pump built in ?
Great idea, thank you! My Mercury shot off valve red thingy keeps on coming off! A ridiculous way to turn fuel on and off. This will give me more range and wont have to deal with the fuel shut off valve
Funziona quindi? Anche senza pompa della benzina?
I assume the other line going to the T is coming from the original tank (on top of motor)? Sure that’s right but just confirming because I am definitely adding this external tank to my motor. Awesome video by the way! Oh almost forgot. Did you have to purchase any extra fuel hose?
That's right so u can use the motor from the internal tank as well. All u have to do is open the valve.
That's right so u can use the motor from the internal tank as well. All u have to do is open the valve.
Did you purchase extra fuel hose? If so 3/8
@@michealmccroskey8876 Yes I did and go with 3/8 because the 1/4 won't fit on to the brass connectors.
Ferenc Harcos I purchased the parts today for adding this to my motor. I purchased a 3/8 Brass T and a 3/8 brass connector for the quick connect. Is that correct? I think your material list says 1/4.
I'm thinking the original tank can have a shut off valve as reserve tank.
Tried this conversion but cannot get it to work, when I am pumping for fuel I can hear air coming out of the airfilter on the carb. Simply put the system is not getting pressurized. Will a one way check valve positioned right before the carb solve this issue ?
Aren't you pumping too much gasoline in the system?
You also have to shut the gas cap air valve!
@@FerencHarcos Air valve at top of original fuel tank i shut off. No gas is coming in the system. I suspect either your tankhose or fuel connector have an inbuilt one way check valve, do you know ? I used a Suzuki adapter because it was less bulky and easier to fit to the engine but I suspect it lacks a one way valve feature.
@hbb9302 I only have the gas valve, which also must be close. Otherwise, you pump the gas into the tank.
Does it also start in forward position or is than a gear save engaged?
Did that motor not have a factory fuel pump
This motor is from 2011. No fuel pump. It has a built-in drop tank..
Is there a gasket between the external fuel hose connector and the 1/4” female to barb fitting mounted inside to prevent fuel leaks?
I used fuel grade teflon tape
Hi Frank, question , when you use external fuel tank, need turn fuel switch off and OEM fuel tank vale off ? Thanks
That's right. If you don't shut the fuel valve, you will pump the fuel into the main tank.
@@FerencHarcos Thank you Frank 👍🏻
Love the video but one question Frank. Does the motors red fuel tap need to be on for the remote tank to draw Fuel?
Hello Robert, yes because I have placed the T right behind the fuel line connector. So it is before the fuel tap. I don't use the built-in tank at all, but the option is still there. Make sure u close the air valve on top, otherwise the gasoline will b pumped up to into the built-in tank...
Hi Frank. Yes, ok. I've done mine exactly the same as you..absolutely brilliant! Many thanks.
Did this work out good for you in the long run, Frank? I don't see why it would not?
Hello, yes, it did. The only obvious problem is the lack of fuel pump. That's why I have to give it a squeeze time after time to the bulge pump. But I hated to refuel on choppy water.
I wonder if there is a small external fuel pump you can put inline with your tank ? Something that runs off a small battery and gives the right pressure? @@FerencHarcos
@russellwalsh9081 Wow, that's a great idea! There is always room for improvement. One quick search on Amazon and found one 12v for only $16.
Cool Frank. I just talked with the dealer at online Outboards he says it comes with a fuel pump now....are you sure yours doesn't have one already? I imagine you know...but just checking in case maybe it does. @@FerencHarcos
What pressure does it take? @@FerencHarcos
what you did was pretty cool, but I have to ask why not get the 4 horse and gain the aux tank function along with through hub exhaust for a quieter motor and gain .5hp
Hello. I have this engine for like 4 years. Perfect for my zodiac, the only issue I had was the continuous refill.
@@FerencHarcos I understand, I use the 4hp on both my 12 foot sea nymph and my west marine PRU-3, I like having the external tank too
@@jacobbrown9753 BTW my motor is 3.5hp. That's pretty close to yours :) Anyway I live in an apartment building and must keep storage space as a limit that's why I have a Zodiac. Pls. checkout my uploaded videos. Also enjoy working on stuff.
The 4hp is also 9kg heavier than 3.5
How often do you have to squeeze the bulb to keep pressure
Just like a siphon as long the top air screw is tight it will keep pressure he said it
thanks for the demo. one question. what is the relative "vertical" location of the external tank to the carburetor? does the external tank need to be higher (same height as the top tank), since gas flows down to the carburetor by gravity?
That’s was going to be my question too. Without a fuel pump, it’s basically a gravity fed set up. How will It draw the fuel from 6 ft of hose up hill? I want to try it but afraid to start drilling holes and buying expensive parts.
When you pressure up the fuel with the primer bulb it won't break suction unless its disconnected or if it has a loose connection. The external tank draws the fuel from the bottom of the tank.
@@westtexasconstruction my trial home by Ted Williams motor is that the external tank's vertical position cannot be two low from the carburetor' maybe 1 ft at most. Otherwise, the motor's suction force cannot move the fuel up from the external tank and the.motpr quits. if I place the external tank above the motor, then no problem.
Only problem you can't spin it 180 for reverse, no?
2:46 quindi funziona anche se il serbatoio esterno è più basso posizionato rispetto al fuoribordo?
Intendo dire, riesce il fuoribordo a tirare la benzina dalla tanica esterna di benzina? Ho lo stesso tuo motore sono Italiano 🤙
Ho i miei dubbi, come fa la benzina a salire dal basso verso l’alto? Ho lo stesso motore (marcato Evinrude), penso che ci voglia una pompa per mandare la benzina al carburatore. A meno che lui riempia il serbatoio del motore con la pompa manuale e, quando sta per finire riempia di nuovo il serbatoio
@@pinolo951 concordo
Nessuna risposta dal creatore di questo video?!?
this motor is not designed to add fuelpump, driven by camshaft. so thiss external fuel tank will never work
Hello. The fuel is not forced by camshaft. The fuel line has a vacuum pump.
@@FerencHarcos haha. in all 4 stroke outboard fuel pump is driven by cam shaft. vacum pump in 2 stroke is driven by pulses from crank case
@@iboats1 OK. Than you can also explain how does this motor comes with just a drop tank without anything to do with the camshaft and still works. I would strongly suggest you to check this engine before you comment on it. I wouldn't mind to argue on something that makes sense. This is the actual outboard we r talking about: Mercury 3.5 Hp. with built-in tank.
Oh BTW the modification worked through the summer so far. How ever I thank you for your attention and comment.
@@FerencHarcos I work as mechanic in outboard servie busines so i know what i,m talking about.
You need a fuel pump to make it work or you need to pump it every couple minutes dumb idea
That's true but this is the motor I can afford, and pump is still easier than refuel on choppy water.
@@FerencHarcos if you put the carb off the 4 or 5 hp mercury it may have the hookup so you could hook up a fuel pump and do it. I have a 5 year warranty on mine so im waiting b4 i start changing things