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> tach does not register over 2200 RPM but revs over 2200
TonyA
post Mar 19 2026, 06:49 PM
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My tach will not register over 2200 RPM even though it sounds like it revs way higher then 2200 the green wire is connected to the coil all grounds seem ok. Not sure what the problem is. Any suggestions.
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dtmehall
post Mar 19 2026, 06:53 PM
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do you have access to another tach?
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mgphoto
post Mar 20 2026, 02:12 AM
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QUOTE(TonyA @ Mar 19 2026, 04:49 PM) *

My tach will not register over 2200 RPM even though it sounds like it revs way higher then 2200 the green wire is connected to the coil all grounds seem ok. Not sure what the problem is. Any suggestions.



You should be able to borrow a tech from your local auto parts, that should confirm what your revs should be. There may be a problem with a circuit in the tech.
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rfinegan
post Mar 20 2026, 02:30 AM
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Bouncing needle and not responding to rev is very typical of a failing tach. Im told the capacitors break down and fail internaly. Are you running a points distibutor?
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