I would go to 32-1 on any brand and make sure that the gas you are using is from a good station.....we found ONE station and got ahold of the supplier and made sure they went through a bunch of gas and always had fresh stuff......makes a difference, also make sure that yer spark plug is gapped correctly.....not just out of the box
if its stock you need to use 93 octane... changing the jetting to pay 4 dollars more a gallon really isnt worth your while... with our 98 RM80 we ran 32:1 C12... then i started using upwards of 2 tanks a day so we switched to 93 Octane... it actually runs better to a noticeable extent.
Andrew
we race two 2002 rm 85's run stock jetting in both running vp and super unleaded mixed3 to 2 using maxima 927 at 40-1 and dont have a problem at all with fouling plugs at the track we rode in a parade today and it tried to foul due to the nature of riding slow and not being able to keep it cleaned out good luck on what ever you find out
I agree - won't hurt to try a BR8ES plug and see if that helps. When I rode 80's (as a beginner rider) I needed to drop down to the 8 heat range to prevent fouling. Although more experienced 80 riders mostly run 9 and 10 heat range plugs (but these are the guys that never let off the throttle, too).
If that doesn't help - sounds like you may need to lean out the pilot, main, or clip position. How do the plugs look after just one ride? And how does the bike run through the different throttle settings (0-1/4, 1/4-3/4, 3/4-full, etc...)?
Thanks for all the tips.I will start trying some this week.It mainly fouls on start ups and is very wet and black. I think we will try the hotter plug first. Thanks again.
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