WOW abrupt engine issues on new jasper.

Kuban · 06-13-2007, 02:49 AM

Well i dont know man, on the previous tune it was set at 12psi and on the dyno the afr was holding low 12's. I could see if i did have a lean situation in only cylender 5, such as a stuck injector, it could have detonated and bent the valves causing them not to seat correctly. Alot of things could have happened, but one things for sure, since it is only in cylender 5 my guess would be there is something wrong with the injector or wires on that injector causing this. Only other possibility is manufacture defect.

Keep in mind the comp test i did was dry. 175 across all the cylenders dry except one is pretty damn good. If it were some outside influence causing this i think more than only one cylender would show exessive wear.

06-13-2007, 02:49 AM	#9
Kuban 3" Exhaust Join Date: Feb 2007 Location: Milwaukee, WI Posts: 174	Well i dont know man, on the previous tune it was set at 12psi and on the dyno the afr was holding low 12's. I could see if i did have a lean situation in only cylender 5, such as a stuck injector, it could have detonated and bent the valves causing them not to seat correctly. Alot of things could have happened, but one things for sure, since it is only in cylender 5 my guess would be there is something wrong with the injector or wires on that injector causing this. Only other possibility is manufacture defect. Keep in mind the comp test i did was dry. 175 across all the cylenders dry except one is pretty damn good. If it were some outside influence causing this i think more than only one cylender would show exessive wear. __________________ -868 Miles on new jasper engine -All hard pipes -0.57 trim ct-26 -greddy type S -greddy profec b -apexi ride high 7 way adjustables -eibach springs -slotted rotors -mkIV TT rims (front)245/45/17 (rear)285/40/17 -targa -greddy turbo timer -egr eliminated -3" turbo back, no cat, no resonator, Apexi N1 back. -n/a cams Theres others ill think of later.