Engine Performance problem
1998 Chevy Blazer 6 cyl Four Wheel Drive Automatic 135000 miles
Checked igntion system, new tune-up parts, fuel filter, Timing not adjustable, exhaust system ok. Vehicle takes for ever to accelerate, if you keep your foot into long enough will get going, sometime backfires. Now yes I did a fuel pressure test and got a key on engine off about 55psi running about 50psi does increase some with acceleration. I see my readindgs but feels like lack of fuel. Also engine vacuum is low abuot 12in at idle and droups to 0in on acceleration. I've still been leaning towards fuel pump what do you think, thanks.
have the same problem?
Thursday, March 5th, 2009 AT 12:25 PM