Idle problems

[agh1989]

Helloooo guys! A little progress, but apparently solving one problem leads to another..

I backed down the pilot screws then opened them 2 turns, so now the bike idles perfect and revved up perfect BUT…
after a while (5min) it stalled and wouldnt start for a while.

Waited and it started fine again.
road it up and down the street slow in 1st gear, it wouldnt rev up. Almost felt like it was vacuum in the tank so
I took apart the fuel cap and cleaned it thinking it was vacuum problem. Is it anywhere else i should look?
Only have about 3-4 litre fuel, could this couse this?
maybe something electrical?

[tom203]

At the very least, you needed to remove all the pilot screws and inspect for damage..broken/blunt tips,etc . Just turning them out like you did, might have found a “sweet spot” on one or more of the carbs and let it idle ..but it falls flat as you feed it throttle….. pilot circuits have to be perfect as you give throttle

[rphillips]

Simple and easy, try running it on PRI instead of ON, just to see fuel is flowing properly... Unless the screen in the tank is clogged.

[agh1989]

tom203 Yes as you say its probably good just in case to inspect them.

rphillips i didnt think of that, i shall try that tomorrow
by ”screen” du you mean that one on the petcock?

[Grand Rouge]

Pilot Screw 'caps' The European spec.....Canadian spec too carbs ..did not have caps over the screws. The screws are longer and the top of the screw is generally flush with the carb body opening

There were (apparently) no published restrictions or government decrees prohibiting adjustment. GetAttachment.jpg

[rphillips]

Yes mounted to top of pet cock, stick'in up into the tank. I've been lucky, been riding GS's since "78" and have yet to see one clogged, but know they can, very fine screen.