Thread: Sounds like ping (detonation)

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What octane fuel are you running? low octane fuels have to have the timing retarded by about 40%, If you run 10* advance on 93- 94 octane and you run 87 octane....timing should be around 5-6* .....if set at 14-15* on premium.....then 9* +/- 1* should be great on 87 octane

Originally Posted by RadRidesByDan

What octane fuel are you running? low octane fuels have to have the timing retarded by about 40%, If you run 10* advance on 93- 94 octane and you run 87 octane....timing should be around 5-6* .....if set at 14-15* on premium.....then 9* +/- 1* should be great on 87 octane

So far I only use 'premium' gas and it's supposed to be 93 octane (Hess or Mobil)