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Old 05-09-2024, 04:16 PM   #7
samert111
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Join Date: Jul 2022
Location: Rockford, Mi
Posts: 69
Re: pedal to booster ratio mechanism

The conditions you are describing sounds like your engine is not producing enough vacuum for multiple brake pedal applications or you need a check valve in your brake booster vacuum line from the engine to hold the vacuum in the brake booster.

Also, If you're running an aftermarket camshaft with significant lobe duration or narrow lobe separation these can reduce your engine vacuum.
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