Need some help , i have a JETT 56LX engine with about 4 flights to it , after every flight the glow plug is fouled,used several types of plugs OS#10(cold), ENYA #3, original that came with the engine, ALSO A ROSSI GLOW plug.
I am using 5% nitro fuel, tried two brands,with no success, the engine is running fine doesn't seem to overheat, but after every flight when ideling for landing the engine will cut ,or when restarting the engine later, the plug is fouled.
Does any one have an idea ??
Could adding an extra head shim to lower the compression help ?
Thanks