yes checking fuel pressure is a good idea specialy when no codes are showing ,by the way did you check for code before ,i don't remember if you did.also check fuel pressure before starting or turning the key on ,when the car has been sitting for a while,if there is no pressure it mean your loosing pressure ,could one or more leaking injector.

 

I had this problem long time ago,changed the coils and it fixxed it(car would not start sometimes in cold wheater)A méchanic told me lately that when coils fails its in cold weather to start the car.and when car is stated or car is wharm the coils do ok.

 

I gave this advice to davchrwoo and it ended up beeing the solution.If you can get coils from a junk yard coud be very cheap,or if you know somebody that has one that you could try on.remember coil and ingnition moduies are two diferent things.








good luck!





keep posted it helps a lot!

 

I recently saw a post where the fuel return line was blocked from the regulator...

Might be there. .

Good Luck .

 

checking fuel presssure would also tell you if it too high,inthat case(over 45 psi )return line is blocked or regulator defective witch I'd doubt since youve changed it. You can also undo the return line from fuel ramp and connect a line that would return in a gerrycan or so.By doing this gaz should return in your can when car is running,and even if you turn ignition key on and listen for the fuel pump running:doing this several time in a row will build pressure in the ramp and the excess fuel will go in the can.