Start-up: Ran Longer Than Last Time

[Bingster]

Bought a new coil and tried starting the engine again and it fired and ran this time for about 20 seconds and died. Couldn't get it going again. It kept acting like it wanted to start and then finally did.

Some observations:

Pool of gas seemed to stay at bottom of carb.

Carb leaking.

A small amount of smoke coming out of the oil breather tube on cranking.

A helluva lot of smoke from manifold upon start-up.

Seemed to be gas where manifold meets the exhaust pipe.

New coil still got very hot.

The battery couldn't keep up. Is 640 cranking amps too small?

Maybe the compression is bad or valves sticking?

 

 

[Los_Control]

Just my thoughts, the battery in my daily driver sbc is 600 amps .... yours is probably overkill.

Still trying to remember though, we have bounced around a lot .... are you 6V starting with a 12V battery?

@sniper explained in your other thread, your coil will get hot if you do not have a ballast resistor in front of the coil. ..... It will still run.

Do you have a new set of points & condenser installed? .... I have seen modern condensers never start a car out of the box, then seen them start a car once, but never again ... they can work 100 miles and then fail.

 

Every thing you say kind of sounds normal, sucks if it is a condenser that failed though .... you have to diagnose by the brightness of the spark at the plugs ... if you have the original I would try sticking it back in.