hello boys and girls Im new in here :) I have a problem with a jetta 2000 2.0l 90000miles
Car idle rought .no power ,backfire in the air box ,hard to rev up basicaly undrivable !
here the code I got Random missfire
cylinder 2 cylinder 3 cylinder 4
I did a little tune up but still havent changed a thing I changed
-sparks plug
-wires
-coil and module
-fuel pressure regulator (3.0bar)
-fuel filter
I also checked the fuel pressure
2.5 bar (vaccum plugged)
2.9 bar (vaccum unplugged) all at idle
Here a interestng fact if I plug the return line so that fuel can got back in the tank it run and take her gas O.K.
when it warm up it's seems to run a bit better but still hesitate some times and run rought
Guys I you must help me on that one cuz im about to grap my baseball bat
Regards Alex