Power valve issue

[declan]

@thechompster it’s possible the the teeth on the cogs may have snapped it worth taking a look

[thechompster]

@declan cogs are fine as just changed the chain so checked them both.

[thechompster]

Forced the valve open while engine running and goes like stink top end. Have noticed since I done that and tuned the ignition off and on and start engine it starts to move as it should for a few revs then stops moving again. I'm taking a guess it's the solenoid?

[Calum]

@thechompster It's a motor on these. So could be the brushes.

Are you sure the valve isn't just gunked up.

Would be worth dismantling the assembly and cleaning it thoroughly.

[thechompster]

@calum it could possibly be gunked up but would it not move when you turn the ignition on?

[thechompster]

@calum do you have a link for how to remove power valve at all?

[Calum]

@thechompster No, just take the two powervalve end caps off. The offside powervalve housing has a bolt to keep the two pieces together, make sure you don't lose the locating dowels as they're prone to falling out. You'll want to lubricate it with WD40.

[thechompster]

@calum ok thanks for the help. With give it a go.

[declan]

@BraDT thats how you take it apart bud

[BraDT]

@declan cheers mate

[thechompster]

Took the exhaust off. A bit dirty in there but rotates easy enough. Goes through the cleaning process nice and easy so all I can do now is change the servo and hope it sorts it.

[Calum]

Odd that it'll do the cleaning cycle fine but not run right.

I'd be more inclined to say faulty CDI more than anything. I guess these bikes are just starting to show their age.

[thechompster]

@calum yeah I guess they are.apart from that it runs lovely. Will change the servo. If that doesn't do it just the cdi left I guess.

[Jens Eskildsen]

A friend had a faulty servo, sometime during a ride where the PV was open, it would leave it open. Other times just seem erratic. I believe the gears in the servo was toast.

[thechompster]

@jens-eskildsen ok thanks mate. Very helpfull
Will try another servo then and see what happens.

[Mitch_350z]

@thechompster just out of interest, what spark plug are you running??

[thechompster]

@mitch_350z iridium spark plug

[Mitch_350z]

@thechompster does it have the resistor in it the 'r' in the spark plug type as this can cause issues with the operation of the valve

[Calum]

I've always ran br9eix on my bikes with no isses.

I think that's the one at least.

[thechompster]

@mitch_350z the one below. Br9eix.