1998 Chevy Truck engine cranks but wont start

RCZAPLA

MEMBER
1998 CHEVROLET TRUCK
V8
4WD
AUTOMATIC
200,000 MILES

Truck cranks but will not start. Have spark and can hear fuel pump running. Plugs have gas on them.

Wednesday, January 20th, 2010 AT 12:05 PM

5 Replies

TOOOMANYTOYS

MECHANIC
513 POSTS

I would start by checking the fuel pressure. Just because you can here the pump, and smell fuel on plugs does not mean its getting the proper amount of fuel. The pressure should be 55 to 60 psi to run. Also while checking pressure take a small sample in a clear cup to check quality of fuel in tank

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Wednesday, January 20th, 2010 AT 12:13 PM

RCZAPLA

MEMBER
3 POSTS

Do you think it could be the fuel pressure regulator. The fuel pump itself is fairly new. And if so where is that located

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Wednesday, January 20th, 2010 AT 1:34 PM

TOOOMANYTOYS

MECHANIC
513 POSTS

The fuel pressure regulator is located under the intake plenium. If you suspect the regulator is faulty just pinch off the return line to the tank and see if the pressure goes up.

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Wednesday, January 20th, 2010 AT 1:38 PM

RCZAPLA

MEMBER
3 POSTS

Was just told by someone that the truck has very weak spark and was told to replace the ignition control module. Does this make sense

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Wednesday, January 20th, 2010 AT 2:31 PM

TOOOMANYTOYS

MECHANIC
513 POSTS

Weak spark sould still ignite the fuel, it would at least try to start or run poorly. Also weak spark would more or less be the coil not the module. Advise anything is possiable. I only sugguested checking the fuel pressure, because its the more common issue with this type of vehicle.