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Old 14-09-2017   #1
Join Date: Sep 2017
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tachometer doesnt work unless you step on brake or rev higher

1977 fiat 124.so I rebuilt the carb since the 3 year old gas gunked it up. it ran but not great. now runs nice but the tachometer reads zero unless I tap brakes or rev over about 2500. I haven't touched anything electrical
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Last edited by alfonso falboni; 14-09-2017 at 21:13. Reason: left out model
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Old 07-05-2019   #2
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Re: tachometer doesnt work unless you step on brake or rev higher

Yes it's been several years but i hope it helps.
This happen to me when it tried a aftermarket coil from Jaccobs now owned by Accel i think, i put back Marelli OEM and all was good.
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