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Discussion Starter · #1 ·
Please help!
I have a Monster 750 -97. One of the spark plugs breaks down after a short drive, but always works with a new one for a while. I have replaced the ignition coil and spark plugs. I don鈥檛 know what to do 馃槵
 

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Spark plug wires and caps replaced ? Swap igniters, see if the problem moves to the other cylinder. Check the air gap on the flywheel triggers. People are seeing improvement running them with less gap. If gap is beyond spec , reset them. Belter probably has a YouTube video on it.
 

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What does the plug look like after it breaks down?
Yep its important to know what the plug looks like when you replace it. This will give an indication as to what is causing it to fail.

ducs suggestion is where to start troubleshooting. But the plug is a good indication of what likely the problem will be.
 
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