hello guys I have a h2 03', but im having problems starting it, went i tried to start the engine I have to tried twice and some times more than that, but went it start the engine function pretty well, sooo i check the fuel pump but its ok, I replace the fuel filter, and also the fuel pressure regulator... anyone have an idea of what could be?

 

What you described sounds like a fuel pump. How did you determine the fuel pump was ok?

 

because i replace it with a new one, and a new fuel filter, an also after it start it runs perfectly, im just using the old fuel pump housing

 

because it was replace for a new one went i change the fuel filter, the only old thing that im using is the fuel pump housing

 

It sounds like a fuel problem to me. Just because the pump is new doesn't mean that it is good. You need to check fuel pressure before start and at cranking. Just because it runs fine doesn't mean the fuel pressure is adequate to start the vehicle. Most part store will let you borrow a pressure gauge.

 

A fuel pressure test is a must, cleaning your throttle body would be another good idea.

 

 

 

Leaking injector causing flooding when shutoff and allowed to sit
Check the fuel tank pressure, if the purge solenoid leaks and the vent solenoid does not open then fuel vapors will accumulate in the intake from vapor pressure from the tank and cause hard start issues (this will usually cause a fault code)

Neal

 

leaking injectors would only effect the start if the vehicle is warm and had been sitting for an hour or two. If you're having troubles only when it is warm, push the accelerator to the floor with the key on then start. That puts the vehicle in flood clear mode and see if it starts better.