Adjusting Idle Mixture on CV carbs...

[SamLack99]

I just wanted to give thanks to George Burroughs (koolaid_kid) for his enlightening: Adjusting Idle Mixture on CV carbs, using throttle response method

After much hair pulling, swearing, and frustration...

...I finally got my head around the information in this priceless document (assume I know nothing, but I'm keen to learn).

Suzy (1982 GS750T) now idles happily at 1300 rpm and returns quickly to idle after blipping the throttle.

I still need to do a road test, but that'll have to wait.

Take a look at the photograph, and you'll understand why =)





Next up:

Carb balancing with the Carbtune tool.

Oh, and I'm delighted that the R/R is working, as the battery voltage increased after my many attempts with the pilot air/fuel screws.

 

[stossboss_gaming_and_news]

Thanks for resharing, I'm close to this stage but waiting on warmer weather so my hands can actually move.

 

[SamLack99]

It's really good as it enabled me to interpret the results I was getting in a way that made sense.


One thing I didn't realise at first was you can adjust the air/fuel screws in one go.

I did one and a half turns - fail. Turned it off, waited an hour.

Then one and three quarter turns - fail. Turned it off, waited an hour.

Then two turns—better, but RPM's still creeping up as the engine warms up. I turned off and waited an hour.

But I ran out of daylight.

So on day two, I tried:

Two and a quarter turns - Meh Then whilst the engine was still running...
...Two and half turns - nearly there, then with the engine still running...
...Two and three quarter turns = seems to be perfect.

Still need to do the road test.

But wish I'd realised I didn't need to keep turning the engine off and waiting before trying again.

Still...

...You live and learn =)

Good luck and I wish you warmer weather soon.