Fuel pump or pressure regulator?

[cheche]

Hey guys,

I have been having an issue with my car during the last week, E30 318is.

The car doesn't want to accelerate or keep the engine running when I have ran the car for a few minutes, like half an hour and then I turn it back on.

so I go to start the car in the morning, turn on fine and works fine, and I drive like 15 minutes to meet with my coworker to do carpooling, I turn the car off and turn it back on, and it sputters and doesn't want to rev up, so I floor it up to like 6K and it works just fine again, only happens when I turned it off and I turn it back on.

I clean the ICV and id didn't help, I am almost certain is the fuel pump, but I want to know if this would be a symptom of the fuel pressure regulator?

let me know if you have any ideas.

thanks!

[cheche]

Change the spark plugs last Saturday, it helped a lot, but still does it sometimes, I am quite certain right now is not the fuel pump.

[deansweet]

My kids 318i kind of did the same thing and it was the Crank Position Sensor.
It would fail when it got hot. You'd have to let it sit for 10-15mins after fueling up to get it started back up.
Hasn't done it since I replaced.
Use B<W brand, off brands are 'iffy'...

Dean

[cheche]

Thanks Dean, I will try that