Fluctuating idle

[jchesshyre]

...and vacuum, by a few mm HG, on only the rear cylinder when checking carb sync. Other cylinder is absolutely stable (with my Davida gauges).

Is this likely to be a vacuum leak?

Carbs are stock, TPS is at 500, idle mixture is correct.

[Watty]

That would be my first check

[jchesshyre]

Turns out the fluctuating needle is an issue with the damping in my gauges! Swapped the hoses and the same dial did it!

But idle is still fluctuating slightly...

[VTR Phoenix]

Do you have some inline adjusters to help with the fluctuating needles? Mine came with some that you can plug in line and screw in it out.

[jchesshyre]

Turned out it was my gauges that were dodgy. Tried with the Morgan carbtune ones I've had for a while but not used yet and the synch was out by quite a bit. Adjusted it with these and the bike felt lovely...so lovely I got carried away and crashed it (see my post in the General section)!

[tony.mon]

Bike was fine, then.
It was you that was out of balance.

[jchesshyre]

Yes! Or my gauges. It was also contributing to the slight off-idle stumble I posted about, although the choke issue was contributing to that as well.

[Watty]

Bike was fine, then.
It was you that was out of balance.

Quite literally !!

[jchesshyre]

Hahahaha oh dear I'm so slow off the mark I missed the joke.

A bit more balance yesterday eve would have gone down a treat