HARD START WHEN WARM

1999 GMC

Tiny

aman721

February, 3, 2008 AT 2:52 AM

Other Category problem
1999 Other GMC Models V8 Four Wheel Drive Automatic 140000 miles

Starts right away when cold. Cranks for several seconds when warm. Back fires every couple of weeks.

FOUND 3594 RELATED QUESTIONS

1991 Hard To Start

41 ANSWERS
4 IMAGES

Engine Does Not Stay Running

33 ANSWERS
8 IMAGES

1 Answer

Tiny

Service Writer

February, 3, 2008 AT 6:43 AM

The fuel pressure regulator may be your problem if it is leaking. Sometimes there will be a raw fuel scent at the motor when this happens. The 5.3 motors were affected by this.

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Fuel Pump Pressure Test
Fuel Pump Replacement