In a message dated 4/8/02 10:45:22 PM Central Daylight Time, dherv10@xxxx writes: > Jason, My car has sat for sometimes a month and still start right up. Does > anyone know how long the pressure can stay on the syste. I don't. Call if > you > need any help with the adjustment. > John, when my car was having running problems last year (which i have since completely rectified, thank god), i found that the system held measurable pressure on the order of a few hours. in the shop manual section D:02:01 you can see that the system must hold 3.3 bar immediately after engine shut down once the pump stops. this is assuming that you had adequate running fuel pressure. after 10 minutes, the system should be holding at least 1.7 bar. i am postive that if you drove your car home one evening, there would be very little if any pressure the next morning. the cold start valve, as someone else stated, is supposed to enrichen the mixture when the engine is cold. this makes sense because by the time the engine is cold, there is no more fuel pressure in the lines. and if there is, it is a negligable amount because obviously it doesn't make starting difficult with pressure AND a cold start burst. Andy Soma576@xxxx 1982 DeLorean DMC-12 VIN#11596 Fargo, ND 58102 [Non-text portions of this message have been removed]