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post #1 of (permalink) Old 04-03-2002, 06:12 PM
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CR250R Running Methanol - Plug Type?

I am running a CR250 on methanol and am getting misfires when under load that clears after about 1 to 2 minutes of racing.

The plug used is a NGK B9EV Resistor Type, the plug cap is also an NGK resistor type. Plug insulator is blackish.

Any idea what would be best plug and any other ideas as what misfire could be caused by. I'm sure its not fuel related.
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post #2 of (permalink) Old 04-03-2002, 08:36 PM
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Re: CR250R Running Methanol - Plug Type?

blackish is rich. ive never hed of menthol in a dirtbike. why dont you use nornal fuel?
post #3 of (permalink) Old 04-03-2002, 09:00 PM
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Re: CR250R Running Methanol - Plug Type?

cuz then u go regular speed.
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post #4 of (permalink) Old 04-04-2002, 08:59 AM
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Re: CR250R Running Methanol - Plug Type?

i think methanol is similar to alcohol where you burn twice as much fuel per air but get 10% more power.
i think you are running hotter also ? maybe go leaner on the fuel? and possibly a hotter plug? try calling a dealer that actually knows what there talkling about. io would say that its popping because it is running leaning as is. wheere if it was running really rich it would bog. reply with the results when u find out whats up. iam curious
post #5 of (permalink) Old 04-05-2002, 12:12 AM
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Re: CR250R Running Methanol - Plug Type?

I'd think after 1 or 2 minutes it would go BOOOMMMM!
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post #6 of (permalink) Old 04-05-2002, 09:22 AM
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Re: CR250R Running Methanol - Plug Type?

Or TINGKSCHERETT
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