TRINI MIKE

THank you ammonhoptep. I think what you are saying is exactly the problem I have. As I quoted in my previous thread I will be pulling the front cover tom to check the timing marks on the opposite cam. Thanks for the help. I will let you know tomorrow.

TRINI MIKE

I took the front cover off and the timing marks are lining up perfectly same as i left it the last time. Belt is new and tight. I am a bit lost now as I thought it would have to be the timing as the engine would only start if i advanced the distributor as far as it can go. Start but run rough and would stall if i dont increase the speed gradually. Is there anything else that can cause these symptoms??

scope103

Is it possible you are confusing VALVE timing (set by the timing belt) with IGNITION timing (set by the distributor)?

Ignition timing is checked (and set) with a timing light. "Setting the timing by ear" is just another name for "blowing a hole in a piston." If the distributor gear is off by one tooth that moves the timing by about 28°. A $20 timing light will tell you if that is your situation, then the fix is easy.

TRINI MIKE

Thanks Scope103 for getting back to me. I know the difference between Valve timing and Ignition timing. I checked the valve or cam timing 2 or 3 times and all the marks line up perfectly. Distributor or ignition timing I set with the rotor pointing at the #1 plug lead on the distributor with the crankshaft pulley marks on 0 and all cam marks lining up. Engine would only start when I advanced or turned the distributor all the way it could go with the adjuster bolt in place. Engine still ran rough.
Changed the coil and the engine started and ran smooth with the distributor in the normal position. Put a timing light on it and at 10* BTDC it boggs down when I try to throttle up. I have to advance past the scale at I can only guess 35*BTDC for it to run properly.
Question?? Is there something else than can effect the timing in this way? Knock sensor, etc??? Sorry for the long post but I am stumped.
Kind Regards TRINI MIKE

scope103

Did you remember to put the jumper (TE1 to E1) in to lock the ECU into base timing? That should only produce about a 5° difference (if that), but you need to start somewhere.

It is POSSIBLE that the annular rubber ring on the harmonic balancer has failed, rotating the ring with the timing mark. You should be able to see some disturbed rubber (if this has happened, the harmonic balancer is toast). You can check the TDC indication by dropping a plastic straw in the #1 plug hole.