Mechanics

CHEVY FUEL DELIVERY/HARD START

2001 Chevrolet Blazer

Engine Mechanical problem
2001 Chevy Blazer 6 cyl Two Wheel Drive Automatic 147000 miles

THE PROBLEM I'M HAVING IS LONG CRANKING/HARD STARTING WHEN VEHICLE HAS BEEN SITTING FOR AT LEAST 30 MINUTES. LESS THAN 30 MINUTES IT STARTS EVERYTIME. CHECKED SPARK AND OK. I CHECKED FUEL PRESSURE WITH GAUGE AND NOTICED WHILE CRANKING THE ENGINE AFTER IT SITS FOR A WHILE, FUEL PRESSURE IS BETWEEN 40-45 PSI. AND ALL OF A SUDDEN CRANKING RPM'S RISE AND FUEL PRESSURE JUMPS TO 60 PSI. AND ENGINE STARTS. WHAT DO THINK IT MIGHT BE? THANKS!
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Jchavez2007
October 7, 2010.



Need a new fuel pump
fuel pressure is low
any reading under 52 is low and engine will not start or will cause a hard start

BMRFIXIT
Oct 7, 2010.