- Sep 24, 2019
recently bought a 2g talon tsi that had been sitting for around 4 years. ran perfect when i test drove it, besides the clutch slipping pretty bad and the idle was rough. put a new clutch in it and the car ran decent but at WOT or full boost, especially above 3k rpm, the car would begin to backfire and stutter violently. filled it up with new gas as it only had 1/4 tank.replaced the IAC with one off a 6 bolt i had laying around, this fixed the rough idle.replaced and adjusted the TPS, this helped very little if anything. spark plugs were coated in black, replaced them with copper plugs (it had platinum plugs in it i believe) and gapped to .028, this helped noticeably. it was pretty much driveable at this point but WOT and anything near full boost caused some backfiring and stuttering. took if for a drive at right as it reaches operating temp the car would start to stall once i pressed the clutch in, driving a little further the car would begin to stutter violently in gear with little to no power. eventually the car just dies and will barely start without the throttle being pressed, at WOT at this point it will stutter its way up to 2-3k rpm only to die out and come to life before it fully stops.