hey guys im from the 99-01 cobra forums but have a '89 notch with an 88 turbo coupe engine swap.
im having a big problem with this engine running on 3 cylinders. at idle i know for sure, above idle i cant really tell as most engines smooth out upper rpms. while its idling, the whole car shakes, and i have narrowed it down to the #2 cylinder. i know this, cause i have unplugged the injector and took off the plug wire, and the engine does not change at all.
now for the things i have tried:
-multiple caps, rotors, wires, plugs
-compression test" #1= 140psi, #2=110psi, #3=135psi, #4127psi
-swapped injectors between cylinders, no change
-swapped wires between cylinders, no change
-swapped plugs between cylinders, no change
-pulled apart injector wiring, all wires look great and there is equal resistance between all wires.
-pulled valve cover, cam followers are NOT broken
-cam lobes are not flattened
-valve springs all seem to have the same tension, none seem to be weak.
-valves all appear the same height, no loos followers (like theres no valves stuck open)
like i said its ONLY #2 thats not running at idle. i am so baffled :bash:
anyone know what else to try??
im having a big problem with this engine running on 3 cylinders. at idle i know for sure, above idle i cant really tell as most engines smooth out upper rpms. while its idling, the whole car shakes, and i have narrowed it down to the #2 cylinder. i know this, cause i have unplugged the injector and took off the plug wire, and the engine does not change at all.
now for the things i have tried:
-multiple caps, rotors, wires, plugs
-compression test" #1= 140psi, #2=110psi, #3=135psi, #4127psi
-swapped injectors between cylinders, no change
-swapped wires between cylinders, no change
-swapped plugs between cylinders, no change
-pulled apart injector wiring, all wires look great and there is equal resistance between all wires.
-pulled valve cover, cam followers are NOT broken
-cam lobes are not flattened
-valve springs all seem to have the same tension, none seem to be weak.
-valves all appear the same height, no loos followers (like theres no valves stuck open)
like i said its ONLY #2 thats not running at idle. i am so baffled :bash:
anyone know what else to try??