OK, since it doesn't build the correct pressure the first key cycle, I can't really blame the check valve for your problems. The check valve is internal and not visible from outside the unit. This valve doesn't have any thing to do with how much pressure it makes while the pump is running. Either the pump is faulty or you have an injector stuck open. I just re-read your post. It really sounds like the pump is just too weak. Did you replace the pump yourself? If so, did you replace the filter/sock on the bottom of the pump?(Inside the tank) Also, did you REPLACE the little rubber hose between the pump and the metal line?(Again, inside the tank) If the hose has a hole in it or is leaking in some other way, you're going to lose pressure at the injectors. If it's a small enough leak, you'll eventually, after a few key cycles, get a good bit of fuel pressure but still probably not enough. Hmmm. We may be on to something. Even if it was done at a professional shop, this could still be causing a problem. I think I would have that checked first.
Saturday, October 25th, 2008 AT 12:20 PM