Engine Pop, Drat!

I had it happen to me, with a big WHOOM through the carb.

My opinion is that the oil pump risk is low, as the motor didn't keep running for very long after catastrophic pin failure.

Good luck.

Rocky

Awww hell Mark,

Pops are the result of an accumulation of gas in the exhaust or intake manifold. Valves that aren't seating or out of time, ignition out of time. Or perhaps a misfiring ignition box. If the dizzy gear was double pinned it should not have sheared. Double pinned gears don't shear as far as I can remember. I don't like the heavy duty oil pump shafts. Bent push rods (valve float), a valve head falling off ... those things could result in a "pop".

Sorry to hear of your troubles, hope the problem is easily and inexpensively resolved .... like perhaps an ignition box.

George, JFB, Rocky,
Thanks. Running a Mallory Unilite. The module might have failed. Hadn't thought of that. Anxious to get into troubleshooting. Had plans to attend an all Ford show next Saturday.

Quick, unobtrusive checks...

1. Pull coil wire - put in screwdriver or spark plug, and crank motor. If you have spark, then it's not the module or the dizzy pin.

2. Pop distributor cap and crank motor. If rotor doesn't spin, then it's likely in the dizzy.

Then go from there!

Good luck

I like the unobtrusive part. Hard to do when working on the front of the engine!

I rounded a corner and leaned heavy on my car as usual in that turn, it started popping rapidly and lay'd over... I clutched it and coasted over... My dist lock was loose and it spin the timing when gassed it....

The rotor spins. No spark. Have a control module on the way. One good think came of this. My vacuum hose from the manifold to the hard line under the car was rubbing on the pulley. The hose was cut about half way through.

PLT-1, I had the same issue When I rebuild my Engine I bought a new Dist Lock from Summit and recently when I checked my Ignition Timing it had moved (retarded) 10°. So of course Panic spread as I suspected the Pin was sheared. In fact the cheap Lock from Summit had bend and was not holding the Dist tightly. The Pin was Intact! Advise: Use the old OE Dist Lock its Rock solid.

@Husker btw even if the Rotor spins in can still be that the Pin sheared and its now out of timing. If I were you I would pull it and double check

goodroc,
I'll definitely check the timing. Thanks.

quote:

The rotor spins. No spark.

This also happend to me...lol... The guys here pointed me to my ignition switch. It was indeed my ignition switch and I ended up putting a switch panel and push button in the car.....