Technical tachometer doesnt work unless you step on brake or rev higher

alfonso falboni · Sep 14, 2017

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

alainm · May 7, 2019

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.

Technical tachometer doesnt work unless you step on brake or rev higher

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Technical tachometer doesnt work unless you step on brake or rev higher

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Technical tachometer doesnt work unless you step on brake or rev higher

Currently reading: Technical tachometer doesnt work unless you step on brake or rev higher

alfonso falboni

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alainm

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Technical tachometer doesnt work unless you step on brake or rev higher