Stumped.

[Drewltr450]

Quad starts up runs perfectly. Revs to the moon in neutral, and cruising with not alot of throttle being applied. Right when i give it a big punch of throttle it lags, it will somewhat bog or die for a split second then it will kick in and haul a** like its supposed to. Right when it gets going it rips all the way to rev limiter. Also after it warms up if i slow down and stop and let it idle it will want to die and i have to give it some gas to keep it running. Idk what the problem is. Brand new spark plug. Valves are all in spec. Please help spring is coming!

[Drewltr450]

How do i replace the fuel filter? Can i replace just the filter or do i have to buy the whole filter housing.

[TitanMotorworks]

you can just replace the filter. It runs around $35 Also, how old is the fuel. Low octane will do that to but its most likely the fuel filter.

[atveric132]

also u might wanna take the trottle body off and clean the injector