Verify reeds are not cracked. Unfortunately, Ski-Doo reeds fail relatively early (around 650 miles).
We recommend Turbo Boyson reeds as they are much more robust. You only need the petals, not
the entire cage. The slightest deformity or crack can cause this problem. Please look at your reeds
carefully!
Ensure you are not sucking in hot air. At times, we’ve seen sleds where the junction between intake
tubes under the hood is not secure. This creates a situation where the sled is pulling in hot air from
under the sled.
Be sure the plugs are gapped properly (0.020) and indexed correctly.
Verify there is no boost leak on the charged side of the system. If one overtightened the clamps on
the airbox, the airbox can deform. We suggest utilizing epoxy for the silicone between the airbox
and throttle bodies (on the airbox side) and adding an additional hose clamp to the charge tube
airbox connection.
Remove all foam from under the hood. Try and keep as much heat away from the motor as possible.
Be sure you are not over-revving or the belt is not slipping. If the sled loses load under boost it will
go rich.
Verify fuel filter is clean. Consider replacement
Verify fuel pump and injectors are working properly. In some 2018 model sleds, the PTO injector
was notorious for failure.
In some rare cases, an injector wiring harness is shorting out or malfunction. One good way to verify
this is to give the harness a little tug. If wires appear lose or broken, replace.
Ensure RAVE valves working properly.
If all else fails, give us a ring or drop us an email.
