Posible fuel leak or overflow?

maniatopoulosg · Oct 14, 2018

What’s up guys hope everyone is ok after MICHAEL
Question I was moving my trailer mounted 803 ( or at least I was trying to )
I lifter the trailer from the front and kinda put it on my shoulder when the agonizing push was over I noticed diesel along rails on ge and on trailer is this normal ?
I did lift it high I’m 6 feet tall so the generator was not level by any means

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DieselAddict · Oct 14, 2018

Did you see where the fuel was coming from? If you tilted it down towards the fuel cap it is possible to have some fuel leak from there.

In general you should not see fuel anywhere on a properly working machine.

Can you take some photos of what you are seeing?

maniatopoulosg · Oct 14, 2018

It definitely did not come out of the fuel cap
I noticed it along the rail of the generator and the right hand side of the machine I guess you can say the side but the fuel pump is on this is a very low hours unit everything has been smooth so far

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DieselAddict · Oct 14, 2018

That is definitely not normal. The usual suspects are the fuel lines around the engine and the well nut at the bottom of the fuel tank.

You will want to carefully look around the engine compartment and see if there are any other areas in there that is wet from fuel.

Guyfang · Oct 15, 2018

Pull the cover off the fuel tank compartment. Take a look see around. Also, fuel can get trapped in spaces, and pool there. When you lifted the trailer, it might have run out. This can happen a lot, when for insistence when the fuel filters get changed. Then start the set, look for leaks.

Zed254 · Oct 15, 2018

I overfilled my tank once and ended up with a puddle dribbling out of the fuel tank compartment and into the motor area. If your fuel tank was full and you tilted it for more than a few seconds that may be your leak source.

On an 802 (more vibration than an 803) I had a leak on the valve attached to the bottom of the water separator / filter located just behind the Dead Crank Switch. That one scared me because I discovered it 30 minutes into a test run. All was good until I noticed fuel on the trailer.

Light in the Dark · Oct 15, 2018

Guyfang said:
Pull the cover off the fuel tank compartment. Take a look see around. Also, fuel can get trapped in spaces, and pool there. When you lifted the trailer, it might have run out. This can happen a lot, when for insistence when the fuel filters get changed. Then start the set, look for leaks.

Definitely pull the panel before anything else. Look at the wellnut where the return spout is positioned, as well as the well nut on the outside of the tank. You might want to get someone else there and try to articulate the trailer in the same way, with a set of eyes on the rear fuel system.

Light in the Dark · Oct 15, 2018

Edit, without running the set, let it sit at Prime + Run for a few minutes, and look over the entire fuel system to see spray leaks/seepage, etc.

Bmxenbrett · Oct 15, 2018

Your top well nut is prob leaking. Its at the upper right rear side if looking at the fuel fill. It can leak a bit if filled right to the top. Its not really a have to fix it now issue as long as you dont fill it to full.

If you havnt done the ultimate well nut mod i suggest you do both when/if you do the one.

Daybreak · Oct 15, 2018

Howdy,

Possible leak locations....

Fuel return lines
well nuts ( 2 locations, top of fuel tank, and bottom of tank for fuel drain)
Fuel cap, gasket itself, open vented cap
Fuel fill collar, the rubber necking around the fuel fill collar gets eaten by JP-8, others have found a alternative in the forums here. This can be found when really topping off the fuel tank.

maniatopoulosg · Oct 15, 2018

It is full to the top , I’m going to take off cover to verify
You guys are the best
Some people on this chat group have forgotten more than
the original manufacturers know
Thank you guys

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maniatopoulosg · Oct 15, 2018

Light in the Dark said:
Edit, without running the set, let it sit at Prime + Run for a few minutes, and look over the entire fuel system to see spray leaks/seepage, etc.

Nothing did that
Only time it leaks is when I raise trailer front up high

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Light in the Dark · Oct 16, 2018

The most likely cause sounds like bad well nuts, or deterioration on the rubber collar that interfaces the tank with the metal filler neck slide assembly. Or its simply come loose and is not seated on the tank properly. You should know real quick once you take that tank sheet metal panel off.

Bmxenbrett · Oct 16, 2018

If you do find that its the top well nut. Make sure you replace the return line that is connected to it. It suck removing those pannels more than necessary.

Light in the Dark · Oct 16, 2018

New machines are a breeze, as most are captive nuts (especially the seam over the genhead... thankfully someone wised up that $2.25 in captive nut assemblies could save so much headache).

Guyfang · Oct 16, 2018

What a bunch of sissys. REAL MEN use a box/open end wrench!

Light in the Dark · Oct 16, 2018

I thought real men made their wives do it? Is this like the guy at work who I manage, who tells me real men dont drink almond milk? Pretty sure this same chap doesn't know which end of a screwdriver does the work...

Guyfang · Oct 17, 2018

I didnt say I use only a wrench. My tool used was a Dewalt torque cordless driver. Well, until some scumbag ran off with it.

I am feeling a bit better boys! Look out!

maniatopoulosg · Feb 5, 2019

Light in the Dark said:
The most likely cause sounds like bad well nuts, or deterioration on the rubber collar that interfaces the tank with the metal filler neck slide assembly. Or its simply come loose and is not seated on the tank properly. You should know real quick once you take that tank sheet metal panel off.

Turns out it was the well nut

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Chainbreaker · Feb 5, 2019

maniatopoulosg said:
Turns out it was the well nut

Thanks for coming back to post your finding the problem! It really helps others in the future when people come back and post what the solution was to their problem (it can help show a trend, which in this case the well nut is already known to be). Often times OP's seem to spend a lot of time in a thread picking brains on what the problem might be and never come back to close the loop and the thread is left dangling with no solution.

Posible fuel leak or overflow?

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