350 Chevy OMC stalls after warming up.

[Weekend warrior50]

Changed coil and changed. Alternator works great for about 20 minutes after it warms up. It completely stalls out. What could be my problem?

 

[kenny nunez]

Does the distributor produce a spark from the coil wire ? Try holding the wire 1/2” from the manifold while someone cranks the engine over.

 

[Weekend warrior50]

It runs so it produces spark. The problem is keeping it running.

 

[Scott Danforth]

Do you have points, if so, have you serviced them?

Is your choke set right?