dbarilow
over worked
I'm not sure if this is a problem or not but my truck seems to be running quieter that usual. I was actually able to order at the drive through with out shutting down. Could this be a sign of inpending doom for some component?
What he said. I had the exact same thing happen to me; turned out that that nylon gear in my injector pump was disintegrating and clogging up the ball check valve in the return line exiting from the pump...which in turn put pressure on the pump's internals and somehow retarded the timing. At first, the engine was just quieter, then I started seeing white smoke, then the engine started missing. I cleaned the check valve out and the timing returned to normal for a while, until it would clog up again...Without being funny it sounds like a timing issue to me. Can you see if the injection upmp has slipped or have you worked on the pump? Are you using a fuel system cleaner or have you used it before? Usually when these motors run quieter they are retarded on the timing some.