How to Clean a Nitro Glow Plug

Written by tony thorson
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How to Clean a Nitro Glow Plug
R/C Nitro Cars take practice to be able race well. (Remote Control for flying in outdoor location image by photooiasson from

R/C nitro racing is a popular hobby that many find entertaining and fun for the entire family. The sport is a way for young people to experience science in action. Adults find thrill in the action. The nitro cars need as much upkeep and maintenance as the full-sized race cars. This maintenance includes cleaning the heart of the machine, the glow plug. Without this, the car's engine will not perform as well and can even ruin the high performance engine.

Skill level:

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Things you need

  • Compressed air, preferably Nitro Blast
  • Small-tipped wire brush
  • Needle-nosed pliers
  • Glow plug wrench
  • WD-40

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  1. 1

    Holding the nitro car in your hand, tip it on its side and spray the top of the glow plug with the Nitro Blast for four or five seconds. This will remove loose dirt from the area around the plug.

  2. 2

    Remove the single wire attached to the glow plug using the needle-nosed pliers. Pull the wire off in a straight line without wiggling the end back and forth to prevent breakage.

  3. 3

    Brush the area around the glow plug end to loosen any debris. Take care not to injure the tip where the removed wire was. Spray again with the Nitro Blast to get rid of the dirt that has been loosened.

  4. 4

    Turn the car upside-down and remove the glow plug using the glow plug wrench. That will prevent any dirt from entering the chamber. There is a small seal located under the glow plug that needs to be removed by using needle-nosed pliers. Clean the seal with a rag.

  5. 5

    Spray the WD-40 using the attached straw into the chamber for only one second. Wipe out the chamber and spray with the Nitro Blast.

  6. 6

    Turn the car upright and replace the small seal. Insert the glow plug. Tighten using the glow plug wrench and attach the glow plug wire.

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