Thanks Steve for the help, as I had mentioned the car has 47,000 mile due to my mother not driving the car. I got it with less the 34,000 on it a year ago and had to have the Transmission re-built soon after receiving the car from mom. The only other issue with the car is the dash curling up and from what I have read this is common, I just cut the dash off where it was curling up and applied some industrial glue to the remaining dash to hold it down and put a dash cover on it from eBay. The car is really nice other then the fore mentioned issues. I will take your advice and put a pressure gage on the rail, strange, but it has not done this for a couple of day now but it will again as it has in the past, so I want to find the problem as soon a possible. Thanks again Steve. Mike