Originally Posted by Tech II
Loses fuel pressure over night? Normal....
What is the pressure when the key is turned on first thing in the morning? How much does it increase when you recycle it? Does it immediately drop when the key is cycled off? Pressure should drop no more than 1-2 psi in 5 minutes....
If it won't start, try spraying carb cleaner into the intake while cranking.......if it starts and runs, but dies as soon as you stop spraying, and pressure is ok, possible injector problem......if it continues to run when you stop spraying, try changing the fuel filter....
Should be checked for codes.....If it doesn't start with carb cleaner, is there spark?
It losing all fuel pressure over night is normal ? Had a few people tell me it shouldn't drop more than 5-10 psi sitting over night.
I don't remember the exact numbers since its been a week since I tested it but everything was just where it was supposed to be fuel pressure wise with the the key on, engine off then turned on ect. I've also never had it not start right up with a fuel pressure gauge hooked up. It only happens at 4am when I have to go for work and not once has it not started right up when trying it when I get home.
I haven't tried starting fluid or checking for a spark when it doesn't start because like I said the problem has only happened in the morning and I'm in an apartment so I don't really have the time then or even the light. I plan to get up early this weekend and I hope it doesn't start so I can check those things you mentioned.
I've also had it ran for codes and there was nothing.