RKCRWLR

My neighbor has around a 92 Chebby. It is sending smoke/fuel out the pipe (can not stand to be near it) and now has degraded to barely running. Any ideas (besides my suggestion of getting a cummins!).<br><br>Thanks

dodgeman01

Sounds like the engine is out of time. This happend to me uncles 95 chevy. I would get it checked because not long after the truck sliped time he lost an injection pump. got a new one never retimed it lost the second injection pump. retimed it with a new pump and has been good until it sold.<br>3 months later : <br>DM01

BigBlue

Right before my dad's injection pump died, the only thing it would do is shudder real bad. The place also retimed and even advanced the timing a little when they replaced it.

DieselDaze

I had an '82 GMC diesel for a long time. Shortly after purchase, it started to run poorly.<br>I found a good diesel mechanic and he told me that these engines often jump timing after high mileage.<br>I dont know about the 6.5's, but the 6.2's have a timing chain. It is fairly long and prone to stretch after high mileage.<br>That is exactly what happend.... and yes, it eat the pump too.<br><br>I had the timing chain replaced, new pump and had the timing bumped up a little.<br>Truck ran great after that.<br><br>Rich.

Hummin Cummins

What you have isn't chebby diesel problems, it is chebby diesel standard fare. I went through them as well.<br><br>You have a problem with your:<br><br>Injection pump<br>timing chain<br>fuel sensor<br>water in fuel<br>or air in the lines.<br><br>Take you pick and get it fixed before your pump fails.

spots

Man can u believe the idiot who engineered a diesel engine with a timing chain??????? Oh yeah they kept him around to design the front end on the '03

Hummin Cummins

I dont think the timing chain is the problem.<br><br>it is the fact the drive for the injection pump is driven by it.<br><br>The pump is so precise and the chain lacks so much tolerance.<br><br>Some guys have successfully converted the chain to a gear drive that is offered to marine applications.<br><br>But still in all....you are right....the guy who designed the timing chain was probably promoted to the designer of the new front ends and the avalanche in general.