Thread: Rebuilding 455
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Old 07-23-2022, 06:32 AM
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25stevem 25stevem is offline
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Good news to hear!
Check how your new plugs look.

Many times idle stink is not from being too rich, but from being too lean!

Can you report back on what your idle vacuum is and if that is bouncing around also?

You need a good undampend vacuum gauge to make meaningful idle vacuum readings.

If you gauge is too dampened you may miss a dip in vacuum that allows the power valve to open or if the carb has a power piston that will pop up.

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