ign timing
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Instructor
Joined: Nov 2021
Posts: 146
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ign timing
hi guys i have a timing issue 99 vette base ls1 stock at idle 12-14 degree advance slowly bring up rpm timing advances upward to bout 39 degrees when it hits about 2300rpm it starts to retard to bout 29 degrees and slowly keep increasing rpm to bout 2900rpm the timing goes up to 40 W hen the timing drops i hear and feel engine power down Would bad knock sensors do it or something internal?
