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07 APEX MCX sputter low-mid range

Brutis20

Member
Lifetime Membership
Nov 30, 2007
138
22
18
Canada
I had the sled out last weekend and it was running fine. I was riding through a meadow and carved a bit and the sled started to sputter and act up. Just thought the rear mount screen plugged up a bit, brushed it off and did not help. Ran this way until we left. It was almost like it was missing on one cyclinder. Since then the sled was thawed out in a warm shop, went over a bunch of connections and added a fuel injector cleaner, still no dice. Sled starts fine but just seems to sputter alot on bottom end and not run smooth. When opened up it pulls boost but it has way more lag. It is a MCX 260 kit. Any ideas on what to check out? I am new to this sled, how do you pull plugs?
 
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