Originally Posted by Mightywarrior72
I have thought about that, but how can the timing be 180 out. Do you mean TDC at Exhaust Stroke instead of compression stroke? The crank and Cam have different sensors. If Crank sensor is lined up then #1 is at TDC correct? If Cam sensor is lined up then Cam is at the position with both valves closed and Intake valve ready to open for intake stroke? What am I missing please?
Yes, you are correct.
Cam gear and oil pump/CPS gear are the same size so unlike a distributor they can not be 180deg out.
TDC is TDC there is no exhaust or compression/power stroke for the crank, that is set by the cam/valve positions
There is a special tool to line up the CKP(crank position) sensor, the CKP sensor is the MAIN sensor on the engine, on any computer controlled engine.
The crank has a wheel that the CKP reads, when wheel spins it causes a pulse in the CKP, the pulse starts the spark and fuel injectors.
So without the pulse from the CKP the computer or ICM don't know you are even try to start the engine.