Fuel is leaking heavily from somewhere above the starter (onto the starter) and also drains steadily from weep hole in bottom of bell housing (both only when running). Injector lines are tight and dry at pump and block. Watched from top and bottom of truck. Mechanic ran a scope to the injector pump. Checked pump, connections, and "valley" that pump sits in. Cannot find source of leak. Any info would be greatly appreciated.
Has anyone encountered a strange fuel leak with the 6.5 diesel? on 1998 Chevrolet 3500 Pickup
by twalls in Cross Plains, IN on May 15, 2012
3 answers 3 comments
ANSWER by mastertech6371 on May 15, 2012
sounds like you need another set of eyes. it sounds like a return line from the injectors may be leaking. it is those real small hoses that connect them all together. Roy
Thanks. I'll have to see about doing that. My mechanic swears that he checked all injector lines as well as return lines individually (can't confirm that). I guess what makes it believable to me is that most of the fuel is coming from the bell housing weep hole. It seems that a leak from any fuel line should run down the outside of the motor. Do you know of a reason why the majority of the fuel would be going into the bell housing? Then I could point this out to him. Thanks again, Troy
COMMENT by mastertech6371 on May 21, 2012
the only way that can happen is if there is a leak at the pump and it fills up the valley and leaks out the back. he will have to pull the upper intake to find it. Roy
Thanks so much for your quick response. I will speak to him today.
ANSWER by 02supercharged on May 20, 2014
I had a similar problem. One of the fuel out lines from the separator had broken, but the truck wouldn't run but a few seconds. The line is pressed into the separator. A new one is somewhere from $800 to $3000 dollars.
ANSWER by Dale9411 on July 18, 2015
Did you ever solve this problem? I bought a truck not running, replaced pump and pmd and have the same problem