First, the O2 sensor could be part of the issue. However, to me it sounds like it is taking too long to get fuel pressure built up. What I need you to do is check fuel pump pressure (cold). After checking it and the regulator, when you shut the key off, pay attention to fuel pressure drop off. It should maintain pressure for some time. If it drops fast, either you have a leaking injector, leak in the fuel line, bad check valve in the fuel pump. Let me know and I will tell you what to check next. If you need directions, go to the "How To." Site on our home page and select checking fuel pump pressure.
Let me know what you find.
Friday, November 19th, 2010 AT 2:39 AM