Fuel in the base??????

JustinD

Plow Truck
Nov 21, 2008
2,067
0
36
42
Tiverton Rhode Island
Ok, back in May I decided to do the headgasket and studs in my motor, we took the motor out, did studs and gaskets, put it back in and everything seemed fine, 2 days later.........base full of fuel, ok dropped it off at my buddies shop, found a couple injector lines were dirty and probably not seated correctly, ran with no valve covers and couldn't find any leaks, put it back together, seemed fine..........drove it about 600 or so miles and found that there was a minor amount of fuel in the base again. I changed the oil to see if it just was the leftover from the previous time, no luck still getting fuel. We ordered all new return side washers and bolts, now I had been driving it for over a week, went to a truck pull yesterday and loaded a bigger tune to see if I could compete, I noticed a huge loss in power after about 20 miles of driving it, seems like it comes and goes?? Sure enough I pull the dipstick and I have fuel in the base..........

I'm not sure what to do next what to check next? All the balance rates look good and it runs good no skip or misfire? I still have 60-70 psi oil pressure running down the road and 25-30 idling? Is it possible to have a bad injector and still get a good reading? The only other place fuel could get in the oil is by the CP3 right? Going out of my mind!
 

JustinD

Plow Truck
Nov 21, 2008
2,067
0
36
42
Tiverton Rhode Island
I'll have to check those, do you think I'd be able to see it leaking? We ran it with no valve covers and used the Tech2 to ramp up rail pressure to the max.
 

JoshH

Daggum farm truck
Staff member
Vendor/Sponsor
Feb 14, 2007
13,765
834
113
Texas!!!
An injector o-ring won't leak fuel into the oil. You could have a leaking return line, leaking injector (high pressure) line, or a cracked injector body. Maybe try running it without valve covers again, but run the fuel pressure up to max.
 

JustinD

Plow Truck
Nov 21, 2008
2,067
0
36
42
Tiverton Rhode Island
We have run it without the covers a few times and used the Tech 2 to crank up the rail pressure, can't see any leaks, we replaced all the washers on the return lines and even the banjo bolts. It runs really good and the balance rates are all good too??