good guess on the problem , the regulator is located under the upper intake and rests on the rear of the poppet connector , the reg is round and has a relief tube and is held in by one clip ,

good luck

jim

Answered by CHEVYII
5 questions asked

Sounds like you have an injector that is leaking off pressure.

Extended crank is needed to restore pressure.

A pressure regulator won't cause a gas smell or reduce your mileage but a leaking injector will.

If capable... pull each spark plug to look for signs of fouling.

...if you find one that looks very sooty then pull the injector rail and take that one to a shop to have it cleaned/tested.

..running cleaners thru the system usually doesn't work

Answered by digitalrain
1 question asked

im sorry sir but your wrong

fact 4.3 engine has popet valves, sfi not single injectors that can be pulled out,,,,, they are under the intake

fact a leaking regulator which is located on the rear of the sfi module will cause a fuel smell in the cab ofthis and most other vehicles while running and will cause degraded fuel mileage

Answered by CHEVYII
5 questions asked