8N starts, but won't restart after 10 minutes of run time

webman1

New User
My 8N, front mount, pops right off when cold and continues to run great - all day if necessary.
However, if I shut it off at any time after 10 minutes of run time I have to wait 1/2 hour before it will start. Turns over just fine, but will not pop. No hint of firing, however, spark plugs do show spark.
Replaced points/condenser, new plugs, cleaned carb,screens and sediment bulb.
Thank you for any thoughts!
J
 
As soon as it quits running,
Open the drain on the carb, see if you have a good flow of fuel, if not your fuel cut off valve may be stopped up in the tank, trash in the tank

Also the tank cap or tank vent can be stopped up and the vacuum in the tank is stopping the flow of fuel, but normally it take 30 minutes of run
time for this to happen

Also this sounds like a bad coil, the motor runs long enough to get the coil hot, the internal broken wire separates, the engine stops,

Let motor cool and the motor starts again, replace the coil if it's old, you need a hot spark,

A couple of things to try
Let us know what you find wrong,
 
Check for spark and fuel as soon as it won't start. Not 5 minutes later.

See tip # 13 for info about doing that.

Will the spark jump 1/4 inch?
75 Tips
 

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