I have a problem with my z71 v8 pick-up in the morning when i first start it i have a hard time starting but once it starts it fine after the first start it has no problem starting when u shut it off i change the fuel filter and i can hear the pump run after i turn the key once it started it fine all day just when u let it sit over night some time i have to use starting fuild to get it going

SOURCE: turns over but won't start after it sits for a day

I had a similar problem caused by humidity and a short in the distributor cap so replaced the distributor cap and rotor. Problem solved. Don't buy discount branded parts or you will have the same problem again in a few weeks. Really cheap price equals really cheap parts that will fail early.

SOURCE: 99 chevy suburban intermittenly not starting....fuel pump is runn

Unfortunately the fuel pump can still be bad. The pump has a check valve on it that wears out. The pump will continue to run but, struggles to supply enough fuel to start the engine. You can buy a fuel pressure test gauge from Auto Zone or that type of auto parts store and check the pressure. You can purchase a fuel pump from them too.

SOURCE: ran fine then would not start

If it has been rainy, snowy or wet at all were you live you will need to change the cap and rotor. These vortec motors with the horizontel cap are very well known for not starting when damp. Also while you have the cap off there are two holes in the bottom of the distributer with screens in them, clean these out or remove them to keep the moisture from returning.

Dar

• 2007 Answers
• Posted on Jul 03, 2009

SOURCE: 1992 sierra with a 5.7 tbi no fuel from injectors

Idle control sensor.

SOURCE: 96 gmc sierra hard to crank after 12-14 hours

that has a votec engine in it the fuel pressure is droping at knight and it takes 60 psi before the injectors will fire most likely cause fuel pump ,leaking injector ,or a feul pressure regulator