100k +

[Valkernaut]

Broke the ice yesterday in the way from Gainesboro to Celina for mexican at Los Posas...plus 32 by the time I got back. It's not running as good as it used to before mechanic cleaned carbs. Runs like a scalded dog at throttle but stammers at low opening(also crackles going down hill with throttle rolled all the way off). Where to start?

Jim

[old2soon]

Broke the ice yesterday in the way from Gainesboro to Celina for mexican at Los Posas...plus 32 by the time I got back. It's not running as good as it used to before mechanic cleaned carbs. Runs like a scalded dog at throttle but stammers at low opening(also crackles going down hill with throttle rolled all the way off). Where to start?

Jim

          Replace vacuum lines or my personal favorite-desmog!  RIDE SAFE.

[longrider]

I had a similar issue this spring.  Pull the vacuum line off #6 and check it to see if the petcock holds.  Same symptoms as you describe.  I've seen many posts regarding petcock failure lately.  Our bikes are getting old

[Hooter]

Take it back to the mechanic.

[cookiedough]

Take it back to the mechanic.

good point - if you paid them a few hundred bucks and runs worse, should be no different then taking it to a car dealership.

My dad took his 1986 in about 10 years ago for tune up, new fluids/belts, etc. to an authorized chevy dealer spending a few hundred bucks.  The car killed on him going home had it towed back to same dealer.  They couldn't find the issue but car started up.  A week later it killed on him again had it towed to next nearest chevy dealer.  They found first dealer did not tighten fully a loose ground wire must have bumped it or removed it and never bothered tightening it.  Anyways, problem solved and the 2nd dealers' bill and tow got paid for by first failed chevy dealership.

Keep at them, I would.   

[Steve K (IA)]

I had a similar issue this spring.  Pull the vacuum line off #6 and check it to see if the petcock holds.  Same symptoms as you describe.  I've seen many posts regarding petcock failure lately.  Our bikes are getting old

 
I just recently experienced this.  Just finished replacing the vac lines and new cover set last week.  Runs much better.