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General Category => General Discussion => Topic started by: mswyka on March 27, 2018, 11:31:08 AM

Title: Plug Fouling
Post by: mswyka on March 27, 2018, 11:31:08 AM

This past Saturday we ran with another pair of Ski-Doo sleds a 500 and a 370 - both fan cooled.  The 500 fouled the PTO side plug twice during the day.  We have not had much problem with fouling plugs on our sleds so I was hoping for some insight for why that might have been a recurring issue on that sled.  Plug was NGK BR9 EYA, temps in the mid 30s, non-ethanol fuel.  Sled has single 36 or 38 mm Mikuni carb non-powerjet.

Title: Re: Plug Fouling
Post by: gixxer6 on March 27, 2018, 02:09:21 PM

Low compression on the PTO side?