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DAVEY32

Poor Idle & eratic revs on idle

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Hi All

Can anyone shed some light on A current problem with my Road leagal WR 400 99,It,s suffering from poor idleing at road junctions ie cuts out, & it also suffers from revs staying at above idle at junctions also, have checked plug for mixture and also checked the tps for resistance readings all seems okay.

Its fitted with a FMF PWR COREIV silencer and is mainly used for Supermoto track days and Street use.p.s I,m in England (nr london)

Please help I'm lost

Cheers Davey

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Assuming it ran well before, you may have tight valves, dirt in your carburator, bad quality fuel, misadjusted lowspeed fuel mixture or an airleak at the intake manifold ( remove clamp spacer for better clamping force.

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