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Post Ignition Proble 1968 427 Tri Power

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Old Aug 17, 2010 | 10:04 PM
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Default Post Ignition Proble 1968 427 Tri Power

Just had my Vette tuned ... points, plugs, etc. When I turn off the Vette it wants to continue to run. What can be possible causes? Can a vacume leak cause this problem? 1968 427 Tri Power

Last edited by Whitehouse Station; Aug 17, 2010 at 10:06 PM.
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Old Aug 18, 2010 | 12:12 AM
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Originally Posted by Whitehouse Station
Just had my Vette tuned ... points, plugs, etc. When I turn off the Vette it wants to continue to run. What can be possible causes? Can a vacume leak cause this problem? 1968 427 Tri Power
Idle speed too high, timing too high.
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Old Aug 18, 2010 | 10:57 AM
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Idle (and throttle opening) too high, and timing too retarded.
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Old Aug 18, 2010 | 02:50 PM
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Factory 11:1 compression ratio and pump gas. Solution, kill the motor with the clutch of leave auto trans in gear when shutting off.
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