Misfire with Jumpy Tach

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#8 (permalink)

07-20-2016, 06:24 PM

Gaz64

CC Member

Join Date: May 2008

Location: Brisbane, QLD

Cobra Make, Engine:

Posts: 2,797

Not Ranked

I would disconnect the tachometer, and observe engine behaviour.

A fault tach can cause all of this.

Since it is connected to the coil negative, any internal short to ground is like a random ignition cut off.

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