engine timing for 90 n/a fc
 

just put new motor in wit low miles new injectors, lines etc ,car holds idle is driveable but gets wacky around 5000rpm . exaust pressure is very hard , im not sure witch notch off of the main pulley i should mark up the first or second . i know how to line up the crankangle sensor , for timing it , but not sure on which mark first or second any help is much aprecciated ,or other info will be help full

If by getting whacky at 5k, you mean it's hesitating ("bumping"), then I'd replace your fuel pump and filter ASAP.

As for the timing, turn the E-shaft until the TOP mark (YELLOW) is aligned with the timing marker. Then turn the CAS gear (with CAS removed) until the two dots allign. re-insert CAS. Typically, the CAS should be 1/4" - 3/8" clockwise FROM the bolt. This means, that if you're standing on the driver's side, you will have 1/4" - 3/8" on the LEFT side of the CAS guide.

If that doesn't fix it, then go through the entire fuel system check. You've most likely got a bad/weak pump (or may need it wired with a direct battery link via a relay) or a clogged filter. When in doubt, get an ohm-meter and check all the sensors (including the coil packs) and make certain your VDI and 6pi is working (put grease or paint on the shaft of the actuators; I forget weather they push or pull at the moment).

If it's still having troubles up high, do a thorough re-grounding of the ECU. https://www.rx7club.com/showthread.p...=ecu+grounding


Hope this helps,

Matt

thanks for the help