It can get really frustrating.I know. Especially when you have a situation that is tight to work in.
Anyways, the 130 sounds good enough for me, that's good new.
The fuel pump should be producing 60-66 psi-key on engine off. (If you leave the gauge on, how long does it hold pressure? I have seen misfires among other problems when it isn't in there. I can't say that it is definitly your problem, but it still sticks out to me. I see originally you did have 60 psi so the does give credence that it may not be. I know there is a recommended connector replacement on those as well.
The next are I would start looking at is the fuel inection system. The 4.3 CSI motors did have a problem with the units going bad, of sometimes the poppets are sticking. There are different products you can use, it comes down to running a few cans of pressurized fuel injection cleaner through the injectors.
Call the dealer with your VIN and find out if the recall was done on the fuel injector system, It was extended 10 years, 200,000 miles. Yours exhibits the symptoms.
The 4.3s had a problem with a vent being plugged on the distributers. I know you replaced the cap with an AC delco. Was that in an effort to solve the misfire? Or was that previous to the misfire?
Thursday, September 27th, 2007 AT 8:31 PM