If the engine is running....what does that tell you ? It tells you that the engine
runs....and there is nothing wrong with it mechanically.

If the engine dies when you remove the heater....it means that....

1. The mixture is set way too rich, and the over-richness is cooling down
the plug....and the fire is going out....or....
2. The glow plug is not working correctly....in that, when you pull off the
glow heater....it will not sustain enough heat to keep the engine running.

I know you fellas allready said this....but I wanted to give an explanation
for the layman....or new engine persons.

Dave.