Ignition timing retards
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Ignition timing retards
why does my ignition timing retard from 10 degrees to 0 when i rev the engine to appprox 2000 rpm,i have tried 3 different ignition modules and 2 distrbutors , it is a carburated 502 Mercruiser
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Putting a thunderbolt V module on a IV system will cause the same thing.
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If it's a thunderbolt V ignition, they have ignition retard function built in. It is controlled by the knock deterctor system. If that malfunctions or the connections between it and the ignition module are loose, it will pull timing.
Putting a thunderbolt V module on a IV system will cause the same thing.
Putting a thunderbolt V module on a IV system will cause the same thing.
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