[Sean Marconette]

Mike,

My car has pulled that on me. I thought I lost a cam, everything checked out fine with the engine and leak down. I could not find anything mechanically wrong, and pulled all of the grounds and cleaned them. And magically the car was back to normal. What I found out was a bad ground was the problem. The data logger never showed a voltage issue or fuel pressure issue. But 3 passes in a row it kept slowing down more, and did not sound any different, after resorting to everything but mechanical it had to be an electrical issue.

Good luck

Sean