The problem, from what I can tell, is that there is an exhaust leak towards the back of the engine. When I start the truck up and let it run, the thing runs great. But after I turn it off for a little bit and then start it up again the thing runs horribly and wants to die. EGR works fine cause I can see it working, cleaned out the carb and what not so those shouldn't be the prob. The engine had a spun bearing about a year ago that was fixed, and it looks like they used a copper gasket sealent towards the back of the engine....and I am thinking that is leaking. Any ideas?
