Intermittent ignition problem
Thread Starter
Racer
Joined: Mar 2005
Posts: 471
Likes: 1
From: Hometown The best
Intermittent ignition problem
The 350 engine in my '79 cut off and would not restart. It had no spark at the plugs. After checking everything I could think of without finding anything wrong I tried restarting it and it fired right up. I changed the HEI cap and coil and it did it again. After checking everything it started right up. While I have the no spark condition, I do have juice at the red batt wire going into the distributor but not at the plugs. It is a brand new distributor also. Right now it seems to be running fine but I need to find out why I was not getting fire to the plugs in case it happens again while I'm on the road. Any ideas?
Melting Slicks
Joined: Oct 2006
Posts: 2,417
Likes: 336
From: Texas
i would get a spare 4 pin igniton module (under the rotor cap) and try changing it out. my 79 did the same once, but the second time it quit completely while it was running. had to change the module in a store parkinglot. good luck.
Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,112
From: Crossville TN
When it happens again, check other electrical items to see if it is a 'global' problem (no power anywhere) or limited to the start circuit. If limited to the start circuit, it could be a bad Neutral Start Switch, an intermittant ignition module in the dizzy, or a power wire feeding the dizzy (or inside the dizzy) that has a "rub-through" and is grounding out on a metal part.
