Hey guys,
After leaving the skyline in storage for about half a year I have been trying to get it running happily again but I've run into a few issues.
When started, the car idles fine. When the throttle is increased it won't climb any higher than 2k and then a loud popping sound is heard coming from the pod filter, like the car is back firing. The popping occurs roughly every 5 seconds and is quite loud.
When the throttle is blipped it will rev freely all the way to redline but it will only rev to 2k when the throttle is opening incrementally.
I changed the fuel, fuel filter, spark plugs thinking it was air/fuel related but the issue remains.
The car has no smoke emitting from the exhaust or anywhere in the engine bay.
I read a few similar issues on the forums that point to the AFM but the powerfc shows increasing voltage from the AFM as throttle is increased. The AFM was previously relocated to after the cooler if that makes a difference.
Car has: PowerFC, 4" pod to HKS 2835, cooler to z32 AFM, nismo fuel pump, nismo 720cc injectors, splitfire coils.
The battery has been disconnected for the duration of storage too, so is it possible that tune has been wiped from the ECU?
Any other ideas what the issue could be and how to fix it?
I just want to get it drivable so I can drop it off at chasers and get it 100% again.