RS34's eng. miss

[Guest]

Hi guys. i need some help to get rid of a miss in my 1000 eng. im sure it is the carbs and not electrical. i have switched coils and wires and the miss stayed in the same cyl.
I have cleaned the RS34 carbs a few times and the miss has moved to dif, cyls. after cleaning.
During the last cleaning i discovered the pilot screw O rings have degraded and some bits may have gone into the pilot circuit? I replaced them with new.
I will clean them again and focus here.
I have been testing where the miss is by using a temp gauge on the header .i can tell which cyl is running hot or cool, so i can know which cyl is missing/starving for fuel.
what I just noticed just now is that if i hold my hand lightly in front of the carbs bell mouth(air filters removed) i can feel a slight air pulse on [NODE="1"]Home[/NODE] , a very strong pulse in [NODE="3"]Blogs[/NODE] almost like its spitting back, and no pulse on 2 and 4?? At the header, the temps are like this, 1= 300* 2=215* 3=255* 4=175* don't pay attention to the low temps its not completely warmed. just that [NODE="1"]#[/NODE]1 is running best and 2,4 are worst. they should all be a similar temp.
What is this difference in pulsing telling me??

compression and valve clearance is good is good.

 

[pdqford]

Have you verified the valve lash?

 

[TeamDar]

Carburetor boot o rings?

 

[srsupertrap]

If '"compression and valve clearance is good" What do the plugs look like?

Pulse? We know the Mikuni RS Series chatter at idle which is normal

I have RS34s on my GS1000/GS11002V but no issues like this

 

[Guest]

Sorry for the delay.
i have cleaned them again. i found some more bits of the old pilot screw O rings that degraded ,and some bits have may have gone into the pilot circuit . the pulsing is gone. i just have a miss in cyl 4. and a little pop or backfiring. I will try to clean # 4 again.
Plugs look a little rich if anything, but I would expect that after a start up with chock and a short run time. [NODE="4"]#[/NODE]4 not so much. looks like it was wet? a little confusing really?
Valve lash is good. compression is 200psi to 215.
I have not really looked into the carb boots. they look fine, as as we know, that doesn't mean much. i have heard that u can test them by running a unlit torch of some kind around them?