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RM Fouling plugs after 10 secs

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Well...I decided to come over to the yellow side for a few days :D (Usually on the red side)

 

To the problem:

 

Got a 2005 RM 250 (Has been sitting around for 2 years), Starts up in a few kicks but after 10 seconds it fouls a plug and it is black....(tried this 3 times)

Before I do anything, could someone give me some tips, my first bet would to be drain the fuel and mix 1:40 or so. Any other ideas ? Yes its cold here today around 45F.

 

Thanks people!

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oil seperated from gas possibly? sank to the bottom then gets run through the carb, Have had it happen to me, its like runnning 2:1 premix  :devil:

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