08 m8 low end boging

Check the Oil ratio. My 07 would bog at take off but would clear up untill I shut it down again. Did you try running the stock can?

Jason

LOW END BOGGING...???


��NOTE: If the drive belt deflection is above specifications,
the snowmobile will bog and lack power at
clutch engagement. For good performance, proper
belt deflection is critical

you DO NOT set your deflection by ride height in the secondary...!!!..its in your manual..belt deflection is critical and overides belt ride heigth in importance..!!!

DRIVE BELT DEFLECTION
Drive belt length, condition, and deflection are all
important for peak performance. To check and adjust
drive belt deflection, use the following procedure.
1. Turn the engine off; then open the access panel.
2. Make sure the drive belt is sitting at the top of the
driven pulley sheaves
3. Place a straightedge on top of the drive belt. The
straightedge should reach from the drive clutch to
the top of the driven pulley.
4. Using a stiff ruler centered between the drive
clutch and driven pulley, push down on the drive
belt just enough to remove all slack. Note the
amount of deflection on the ruler at the bottom of
the straightedge. The deflection should be at
31 mm (1 1/4 in.).
741-464A

��NOTE: Push down on the belt with the ruler only
until the bottom of the belt flexes upward; then
read the amount of deflection.

5. To correct drive belt deflection, remove the sheave
adjuster from the pulley, remove or add shim
washers to the adjuster, and install the adjuster.
��NOTE: Adding shim washers will decrease belt
deflection; removing shim washers will increase
belt deflection.
��NOTE: If the drive belt deflection is above specifications,
the snowmobile will bog and lack power at
clutch engagement. For good performance, proper
belt deflection is critical

just got back from a weekend of riding- now mine is doing it 08 M8

check your power valve cable it will give you a bog if they are not working properly

i know its stuped but did you put a new belt on it yet?

do you have a goldfinger on it (reverse throttle)

does it fall on its face like put you over the handlebars or does it just not have power at 4k as much?

x2 on cleaning power valves, and checking oil ratio.

Mine is doing the same thing. . . I talked to a guy that knows virtually everything about cats and he said a fuel pressure regulator should clear it right up. Mine should be here tomorrow and I will be installing it asap. I will let you know if this helps.

check servo motor to see if it moves

change the spark plugs- give that a try