I would check the fuel pressure. There is a test port on the fuel rail. Most Advance or Auto Zone parts stores will loan out fuel pressure test gauges that come with adapters with a deposit.
Run it and get the specifications for your car with the vacuum line on the fuel pressure regulator and with it off.
I can probably find those specifications if you wnat them. Just post back and I will get back with them ASAP.
If the regluator makes no difference it may need to be replaced. If you can run the tester for a while without leaks, see if pressure flucuates or cuts out. If it cuts out the fuel pump relay might be bad. If it fluctuates the fuel pump might be at fault.
Saturday, October 29th, 2011 AT 6:05 AM