Intermittent Ignition Problem

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Sep 10, 2014 | 08:46 PM

Jim78SA

Thread Starter

Pro

Joined: Feb 2005

Posts: 616

Likes: 2

From: Sedalia MO

Intermittent Ignition Problem

On my 78, I have been having this issue for some time now and I have no idea what is wrong. My car runs great all day long. Then, I will be at a stop light and all of a sudden my tach will jump around at the engine starts missing. If I don't hold the brake and accelerate at the same time, the car will die. Any ideas on what may be causing this?

Sep 10, 2014 | 10:11 PM

LT1driver

Le Mans Master

Joined: Oct 2000

Posts: 6,209

Likes: 33

From: Texas-out west

maybe a loose wire somewhere around dist or tach wiring, better experts will chime in soon i am sure....good luck.

Sep 10, 2014 | 10:16 PM

mvftw

Melting Slicks

Joined: Feb 2003

Posts: 2,330

Likes: 6

From: Long Island NY

Ignition modules act funny when they get hot...cheap part to put in...

Sep 11, 2014 | 08:53 AM

Jamess411

Racer

Joined: Mar 2013

Posts: 423

Likes: 25

From: Boca Raton Florida

Usually a ignition module wil just quit until it cools down…but the tach jumping seems to indicate that exact thing. Is the tach going up and down…or only down with the loss of RPM??? Maybe the carb is loading the engine up with fuel ???

Sep 11, 2014 | 08:54 AM

Jamess411

Racer

Joined: Mar 2013

Posts: 423

Likes: 25

From: Boca Raton Florida

Lifter pumping down at idle with lower oil pressure??? Low battery voltage for the ignition caused by bad or corroded connections??? All possible

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