Honda CX 500 Forum banner
1 - 3 of 16 Posts

· Registered
947 Posts

It could be that the resistor in the plug wire cap has gone bad and is causing your problem. There is a thread about the spark plug caps and how to replace the resistor with a section of copper or brass rod on the forum that has been posted in the new forum sometime in the past year. It can help show you how to take apart the cap's guts to replace the resistor section. I'm guessing you have a problem with the cap having an open or too much resistance causing that cylinder to drop out and foul.

The plugs you are pulling...are they carbon fouled (black) or what do they look like?

The caps unscrew from the wires. A long screwdriver with the blade of the correct width will allow you to unscrew the guts of the cap to disassemble it...

You can still get new caps from Honda but they are pricey. No good aftermarket replacement is available because of the length. There's a place in the UK that carries a replacement.

I'll see if I can dig up the post and I'll post a link to it in here if I can find it.

1 - 3 of 16 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.