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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
RM 250 fouls up spark plugs-need advice
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[QUOTE="Rm250sRalRight, post: 752025, member: 52712"] Thanks for the quick reply, guys. Here's some more info I hope may help: Running Yamalube 2R for the fuel mixture. Run 92 octane gas, usually 40:1 Running Yamalube 4 stroke 10-30 oil for the tranny (the more expensive stuff than regular oil, which had worked fine for over a year) As for the air filter, it is clean. I use the K&N oil filter cleaner (the stuff you spray on and rinse off after 10 min). And I cover it nicely with foam filter oil, the blue stuff from Bel Ray. I must admit that my filter is a bit old although it still seems to work fine. I have also been told that the K&N cleaner isn't as good as soaking the filter into gasoline and then washing it with soap. Could it be that my filter is too dirty even after the care I take of it? On a sidenote, I noticed someone posting (about 4 pages down) a similar problem and a user suggested the problem to be the floaters in his carb. That would be a far easier thing to do rather then replacing the camshaft seal. Anyone agrees with this? What I didn't mention is that the plug typically fouls after I ride for a while and then shut it off. Upon trying to restart it is when it fouls up the plug. I recall during a race last year when I had to leave the bike idling for a long time as I was afraid to turn it off and miss the race (I was down to my last plug). This kinda goes along with the user I mentioned above said about his bike. Here's a couple more questions, while at it: what compression should my rm have? The manual only lists a ration, I want to know the psi. [/QUOTE]
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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
RM 250 fouls up spark plugs-need advice
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