Fouling plugs.

Need a spark. All those tedious electrics, lights, tacho, wiring harness, etc

Fouling plugs.

Postby MRT » Thu Apr 12, 2012 1:55 am

Hi Everyone, Can anyone help me please? Does anyone know why my CBR 900 has resistors in the spark plug leads?
Does it need them or can I remove them? Apparently the plugs also have a resistor as well.
Tried it without Resistor, Looks like a better spark.
Got a problem with fouling plugs. Drive for about 15 minutes then it starts to cough & splutter.
Plugs are left all black & sooty.

Martin.
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Re: Fouling plugs.

Postby Tony » Fri Apr 13, 2012 1:07 am

Most of the time resistors in the plug leads are simply to stop TV/Radio interferance.
Take out the resistors, should not be a problem.
"There can't be a practical reason for believing in what isn't true" – Sir Bertrand Russell.
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Re: Fouling plugs.

Postby MRT » Fri Apr 13, 2012 1:47 am

Yeah,Thanks for that Tony.
Had a mate from work come round to check it out, He said the same.
He races formular 500's.
I also lowered the carby slide needle one notch, see how that goes.
Might try Iridium plugs as well. Seen them on Ebay.
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Re: Fouling plugs.

Postby Tony » Fri Apr 13, 2012 2:38 am

After dropping the needle one notch, it still foul plugs you may want to go one number up on the plug heat range.
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Re: Fouling plugs.

Postby MRT » Sat Apr 14, 2012 2:40 am

Has anyone used Iridium plugs?
Are they any good?
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