GT-14 stalling

[cafoose 3,361]

Why would my GT-14 start up and run perfectly when cold but if I leave it run for a minute or two it stalls and won't start back up until it sits a few hours? The choke is opened up all the way after it runs a few seconds. I threw in a new set of points I had in stock and there's no improvement. When it doesn't start, the plug gets wet quickly and I put in another dry plug and it still won't start. Then that plug gets wet. I'm obviously getting fuel. The points gap is .018. I'm wondering if the coil is breaking down when hot? Maybe a bad condenser? Thoughts?

[gwest_ca-(File Mod) 11,195]

Get an inline spark checker so the next time it quits you can install the checker to determine if you are losing spark. If no loss of spark then it is likely a fuel problem.

[cafoose 3,361]

28 minutes ago, gwest_ca said:

Get an inline spark checker so the next time it quits you can install the checker to determine if you are losing spark. If no loss of spark then it is likely a fuel problem.

I forgot to mention I actually laid a dry spark plug on the cylinder head and cranked the engine and got spark. It could have been too weak but it did spark.

[gwest_ca-(File Mod) 11,195]

Spark plugs will fire outside the engine but some will not fire when under compression. A new plug is best to try and if it is not the cure remove and save it for the next time you want to try a new plug.

 

Some will remember the Champion spark plug machines. They had a sandblaster to clean the plug and a port the plug was screwed into to test it. It had a coil to fire the plug and a mirror to view the spark. One would crank up the air pressure in the chamber and watch when the spark would quit. The dial had pass and fail markings so one could determine the plug condition.