1997 Chevy Suburban V8 Four Wheel Drive Automatic 169000 miles
Truck will not start on occassion, mostly first thing in the morning. Later in the day it will start and run fine. One time I drove 25 miles into town and it wouldn't start after stopping at a parts store. Have replaced the entire fuel pump assembly with OEM dephi pump; replaced fuel pump relay; fuel filter, entire intake injection asssembly and plug wires recently replaced. When it won't start the fuel pump does not run. Checked by no pressure/fuel at the shrader valve near the intake and got engineer to start by spraying carbuerator cleaner into the intake.
What are the probable causes for the fuel pump not running? What should I try replacing next?
Monday, March 8th, 2010 AT 2:09 PM