Running the pressure should be between 44psi and 54psi. So, yours is perfect.
Ok. We have good spark, and now we know the fuel pressure is good. What else. Check the egr to make sure there are no vacuum leaks and the valve is operatring properly (not stuck and seating) Next check for vacuum leaks. Check around intake, look for broken or damaged hoses. Have you ever checked the catylatic converter to see if it is plugging? Even though the check engine light isn't on, have you tried to scan for codes?
Let me know.
Tuesday, March 3rd, 2009 AT 1:22 PM