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General Glow Plug Usage Tips
Model glow plug engines are extremely dependent upon the type and quality of the glow plug used. Enya glow plugs use a platinum alloy coil, which uses a thick diameter wire for long life. The thicker wire coil also eliminates the need for an "idle bar" as found on other brands of glow plugs; idle bars tend to reduce top speed slightly, to achieve a more stable idle speed. Enya's glow plug design insures both good top end speed and stable idle speed.
Your glow plug temperature range is too cold when:
· The engine power is weak or has weakened from previous levels.
· The engine slows down considerably or stops after removing the glow plug battery, despite correct adjustment of the needle valve.
To fix these problems, switch to a different heat range plug.  For example (Enya), if a Number 4 plug gives you these problems in your engine, switch to a Number 3 plug instead.
Your glow plug temperature range is too hot when:
· The engine suffers from pre ignition and loss of power.
· The overall engine running is rough
· The glow plug filament is broken or collapses frequently.
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