i recently put some new mikuni vm30s on my cl 350. they deffinatly need some fine tuning . anyone with any info on where to set the air fuel screws at (atleast for a starting point) would be a great help
Start at 1.5 turns out and work from there. If they came pre-jetted, jets will need to be changed in all probability. Start there and see how many turns out it idles best at and then swap out the pilots if it's too many turns away from 1.5.
well i tried what u said and it got the idle around 2k with mixture screws 2 1/4 turns out but now it backfires out of the exhaust and runs very un-even and if u try to give it any throttle it just bogs the motor out this is turning into a nightmirror haha
so far so good. Now drop the idle slightly and tweak those air screws in or out and see how that changes things. You should reach a point where the idle is fine but it won't necessarily move onto the cutaway which takes over from the slow jet from 1/8 to 1/4 throttle. Those carbs often go from rich idle to chronically lean on the cutaway and back to rich on the needle.
Have you compared your jet settings with other people to be sure that you are in the ball park?
If you could borrow an O2 wideband sensor and gauge you would be able to see the air:fuel ratio and from there it's easier to see which way to go next.
i forgot to mention. when i was setting the starting point for the idle screws they werent identical. the left screw was about half way in and the right screw was almost bottomed out before it would move the slide. i took both screws out and they are the same length i even switched the screws around and still it is not right
and for the jet sizes i will get back to you on that and deff do some comparing to others. i ordered them from a sudco dealer and they were "supposedly" jetted for my 350.