When i go to start it most of the time on the first key turn it will just roll over. Most of the time on the second cranking it will start. I changed the fuel pressure regulater, witch i thought was the problem but still does it, any other sugesstions?

 

did you check your fuel pressure

 

Fuel Pump is going south..My 2000 Chevy 4x4 with the 5.3 did this for about 8 months. Then one morning,would not start at all. Like badboy said.IF its below 50 lbs. its going out. Best of Luck.

 

I have a Chevy Silverado 2002, Isuzu 8GF1XS. In trying to turn shipping no evidence of electrical signal to the injectors. I can do to resolve this?..Please Help me...to readramirez@gmail.com

 

The fuel is bleeding back into the tank when sitting. If it runs well after starting then the check valve in the fuel pump assy. is bad. I added an inline check valve and that solved my problem.