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engine pings when warm 200 1993

posted by  Trev29 on  Thu Feb 27 06:22 CST 2014
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last visit: Fri Oct 17 05:56 CST 2014
[RELATED]

Before you touch the distributor, line up the marks on the pulleys as instructed elsewhere.

Now that you know that the shafts are all in sync, pop open the distributor and observe where the rotor is pointing. Where it is pointing is Top Dead Center.

Look for a scribe mark on the distributor rim. It marks where the ignition wire for cylinder 1 sits. If it is not lined up with the rotor, loosen the distributor and rotate it so that the rotor points at it. (You may have to remove a plate under the lockdown bolt that prevents distributor adjustment.)

With the rotor pointed at the scribe, cylinder 1 is set to fire at TDC without ECU input.

So any timing drift arising thereafter will likely be caused by the ECU.
--
1980 245 Canadian B21A with SU carb, M46 trans, 3:31 dif, in Brampton, Ont.






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