Hi there.
What a great forum you have

.
Ron Paris was a hero when it comes to glow engines. Many years ago at a EC or WC he looked at a plug for 30 minutes... Just to be sure to get the right diagnosis for his driver.. What a champ
Originally Posted by
dead1dave
Hi everyone ! I have a quick question ............ocassionally my engine will go way rich and flame out after refuling during a pit stop . What causes this and how can I tune my motor differently or what do I need to do to prevent it ! Thanks Dave .
Well.
A tank in a car should ALWAYS be filled up to the top - in a race that's quit nessesary to fill the tank 100%.
I would suggest you to lean the LSN a little. If the engine runs too lean on that setting, you could try a little hotter plug. How much nitro do you use? Hotter plugs instead of a RB#6 is RB#5 or even better a SH#7. Increase the idle speed a little. All too often drivers sets their idle speed too low. That's critical with a full tank of fuel, where the mixture gets a little rich = lower idle speed.