Stumble around 3000 RPM and 1/8th throttle

[opasnost]

On your '83, I think the advance is built into the ignitor, you have no mechanical advance that uses weights.

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thanks steve you saved me some time....

[opasnost]

i think I'm gonna check the float levels and see if the #2 is high....does the float level effect all the circuits or mainly just the pilot?

[Steve]

The float level will only affect any circuit that happens to draw fuel from that bowl.

In other words, it affects them all.

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[paco13]

isn't #2 the the carb that draws vacuum for petcock? Maybe leaky diaphram letting fuel in #2 vacuum port causing richness.

[opasnost]

isn't #2 the the carb that draws vacuum for petcock? Maybe leaky diaphram letting fuel in #2 vacuum port causing richness.

I just rebuilt the petcock I double checked and its not leaking.

[opasnost]

Update...so I decided to sync my carbs to see if that was causing the problem?

So I built myself a manometer and sycned them...it worked very well to my surprise.

Got the tank back on primed the carbs then set it to on then went for a ride to test it out...and viola the problem was solved....

So I kept riding and noticed power was fading and my fuel gauge was in the red. So I pull over and turn the petcock to Res.

And the problem is back, stumble from 2000-3000rpm!!!!

Just to make sure I repeated this. Turned the petcock to on and after 30 seconds or so no stumble form 2000-3000rpm until it runs out of gas....back to reserve and its back....

So, I'm going to pull off the carbs and make sure all the float levels are right and see what that does..........

[BassCliff]

Hi,

Could it be the petcock? The rebuild kits are rather "iffy". A new petcock always works.


Thank you for your indulgence,

BassCliff