'79 DT 250 No Spark in Cylinder After Warm Up

[ecoalex]

After the engine is warmed up,it won't idle,it stops.It won't start.I turn it over with the plug out on the head,there is good blue spark,the plug is wet,when I pull it. After it cools it will start,then the same thing.I've replaced the plug,coil.It has good compression.What else would cause this?

[james365]

i could be the coil still when it heats up they die sometimes ive seen it many times on other vehicles

[ecoalex]

It seemed a easy thing to try,so I replaced the coil again,it still wouldn't run.It has a good blue spark when the new plug is out of the cylinder.I'm thinking it's the electronic ignition,the parts aren't available.The plug is wet with gas when I pull it...no spark.

[james365]

have you checked the compression with a guage