502 MAG not advancing
#1
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Join Date: May 2010
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502 MAG not advancing
Ok working on a 502 MAG with MEFI-3 ECM. After some motor work I set the base timing (with Mercury hand held) at 9*. The problem is i'm not getting any advance out of the distributer when rpm increases and I am thinking it is the Ignition Module in the distributer? I have ohm the coil inside the cap and it is good and the advance ring in the distributer is moving freely. I doubled check that it wasn't in "base timing mode" by unplugging the diagnostic tool. The new module is on the way and was wondering if I might be missing something?
#2
artselectricinc.com
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Coil in the cap? Advance ring?
I had a MEFI 1 system. It used the standard small cap GM distributor. The only moving part in it it was the shaft, and advance was controlled by the ECU.
I had a MEFI 1 system. It used the standard small cap GM distributor. The only moving part in it it was the shaft, and advance was controlled by the ECU.