IDIBRONCO
IDIBRONCO
If the pump is physically advanced as far as it can go (it can't be turned any farther in the slots for the mounting studs) and the timing's still retarded, then the internals of the pump are worn out. So that would mean that it's time for a replacement IP. It's ideal to replace the IP and injectors at the same time since they wear at the same rate. It's not necessary but it is ideal.Said it was pretty far out of wack and advanced it as much as they could. Again the truck has always seemed to run smooth and strong but at least I know it's adjusted better now. They said I definitely need a new pump. AND that is probably the reason for hard cold starts. .. I'm still not sure why that is, if anyone here knows why...?
This is a symptom of fuel drain back. If the engine runs fine with no issues while running, then there's a small leak in the fuel system, somewhere, that lets the fuel drain back toward the tank after the engine's shut off. There's enough fuel left in the IP and the injector lines to let the engine start and run for a few seconds. Then air gets into the IP after the fuel is gone. You may be able to see a wet place where fuel is coming out, you may have to look pretty hard to see a little bit of dampness, or you may not be able to see any sign of fuel leaking at all. It just depends on where the leak is at.Sometimes though it will start up quick and idle for about 3-5 seconds then die ...After that happens it takes forever to get the thing to fire up and I'm not sure why that is either? ..