Hi all. I have 92 1g dsm awd tsi. My car doesn't start properly. I have to pinch the fuel pressure return line in order to start it. I have changed the fuel pump to an evo 8 ran a new -6an line to the new oem fuel filter, -6an line to the fuel rail and I have swapped out 3 fuel pressure regulators.
All studs have been replaced with rtm stud repair kit. I still have to rewire the fuel pump with the stm kit.
Bow when I unclamp the return line the car starts to stutter and wants to die. The vaccum goes close to 0. And if I give it gas it bogs and sputters. Removing the maf sensor throws a CEL but car starts to run ok but still sputters. And if I give it gas it wants to shut off for a second then runs fine. I've been told that it could be a boost leak or i may not have enough fuel pressure. Please help me. Can anyone help me do a boost leak test. I'm in mississauga. I will pay you for ur time I need this car running as I don't have another car and need to go to work.
Thanks everyone in advance