Mep-803a not the normal fuel leak from the fuel return line ?

[803gen]

I've replaced the return fuel lines hoping it would take care of the fuel leak at the cylinder head. Know I have a little fuel pooling up at the top of the injector is the a simple fix for this ( new o-rings ) ? It's a 2009 generator with 131 hours and will be shipped to an island to help the locals rebuild from a hurricane. I need to make sure this thing is rock solid. Thanks

 

[DieselAddict]

I can't see much from the photos. I've seen a number of leaks from where the fuel return hose slips over the nipple on each injector. The rubber hose splits and the fuel seeps out.

If you remove the hose also check the nipples for corrosion.

 

[803gen]

Diesel addict thanks for replying I've added a new picture. I ran the generator hard yesterday and it weeps at the top of the injector but when it cools down the remaining fuel evaporates. All the injectors weep fuel and with the radiator blowing air around I have little black spots everywhere.

 

[DieselAddict]

Are you saying that its leaking at the hard line connection?

 

[Daybreak]

Howdy,
Its tough to tell with the pictures.
Have you replaced all the fuel return line? It looks like there is still some braided line painted green there.

Cutting little 1.5 inch pieces between each tee, and all the way down back to the fuel tank.

 

[803gen]

So here is a better picture with the pen pointing to the base of the injector where fuel is pooling.

I have replaced all the return fuel lines with this stuff


So we the generator is running fuel pools at the injectors and get blow around by the cooling fan


Is it a big deal to pull the injectors ?

thanks

 

[Daybreak]

Howdy,
OK, you have the correct line. Did you have any issue with any of the tees? could there be a hairline crack in one of the tees? Since this is the fuel return line. There is not a lot of pressure in the line making it come spraying out. That in itself make it hard to locate the point of failure.
Yes, it is one of the things that need fixing. Otherwise it will just coat the compartment with diesel fuel.

OK, in the one picture where you are pointing to the exhaust area. What are you pointing to? If that is black oily goo, your engine is wet stacking. That means it has been run lightly, and the unburned fuel has been building up in the exhaust.

Run the unit long and hard with a good load.

 

[Korgoth1]

If it leaks when the switch is on, engine off, its your return. If it only pools up when its running its on the high pressure side, most likely the compression fitting, from being overtightened.

 

[803gen]

Thanks for everyone's help ..... I ran the generator hard today 75% load almost 2hrs and I believe it was the wet stacking goo. The heat of the engine and residual goo made it appear I had a leak.

 

[liebsce]

I had the same issue with fuel running down from the head. The return lines were not leaking. I found out it was the injector seals weeping fuel up around the injectors. They are available at green mountain generators. Very easy to replace.