C losing power/quits

[Scott Todd]

I've got a very early C which when it gets warm it loses power and finally quits. What should I be looking for? Had the carburetor cleaned up and such but it still does it. I've replaced the plugs and wires only because they needed it, though I figured they weren't the cause.

Don't know if this matters any but it's not stock- been converted to a more modern coil type ignition system; 12V with alternator.

 

[chalmersbob(Pa)]

When it dies, check if you have spark. Sounds like a coil or condenser problem. Bob

 

[old]

What is the time frame on it doing that?? If about an hour then the coil maybe going bad if say 10-15 minutes maybe the ignition switch. either way as soon as it dies check for spark then go from there

 

[Dick L]

Just remember the old saying that if your dead sure you have an electric problem it is probable a fuel problem. If your dead sure you have a fuel problem it is probably a electrical problem.

It just means don't let yourself get single minded. Check and recheck both until you get it solved.

Over the many years I have had very few electrical problems compaired to the fuel problems.

 

[Scott Todd]

DOH- forgot to mention I replaced the coil too, though not the condenser. Will get another one of those and see if it helps.

 

[BushogPapa]

Ofcourse, we assume the valves are set to the correct clearances...

Ron.

 

[Scott Todd]

15 minutes sounds about right. I can check the voltage at the distributor and see if it's still good plus I still have the old spark plugs so I can make a quick spark check.

 

[Tom from Northern WI]

I was having those same problems a couple years ago, my problem was the in the magneto, had it rebuilt then it ran like new, better than it had in years as a matter of fact.