Sky high idle!

Caryn83 · Post by **Caryn83** » Thu Mar 31, 2011 7:32 pm

Hello! First time poster, but been reading and researching since the begining of the year. My 1964 CA77 has finally been running (with electric start!), but as soon as it turns over, it revs so high it's going shake it apart. I was worried about the odd throttle set-up on this bike, but the slide in the carb seems to move freely. Any suggestions/thoughts are welcome!

davomoto · Post by **davomoto** » Thu Mar 31, 2011 8:03 pm

Simple things first. Idle screw in to far? Remove the rubber tube to the air cleaner and make sure the slide is bottoming out. Incorrect cable routing?

Davo

Caryn83 · Post by **Caryn83** » Thu Mar 31, 2011 8:12 pm

idle screw all the way out. slide bottoms out and retracts. cable should be routed correctly. when i bought it from p.o., it popped right off, and i haven't rerouted it.

mike1969 · Post by **mike1969** » Thu Mar 31, 2011 9:25 pm

Have you had the slide out? It's possible that the slide is inserted 180 deg. out.That will make the idle scream.Ask me how I know!

davomoto · Post by **davomoto** » Fri Apr 01, 2011 8:33 am

Can you post a pic looking into the bell of the carb at the slide with the throttle closed?

Davo

bonjour · Post by **bonjour** » Fri Apr 01, 2011 11:38 am

mike1969 wrote:Have you had the slide out? It's possible that the slide is inserted 180 deg. out.That will make the idle scream.Ask me how I know!

Second that.

It's a classic mistake, it probably has happend a few time for everybody who works with old carb. engine's !

When you have the carb slide in your hands, always put the 'long' slide-cut away from you, or, the little cut out at where your idle adjust screw is.

Caryn83 · Post by **Caryn83** » Fri Apr 01, 2011 7:05 pm

my slide does go down, and if it's in 180 off, the slide will not drop. pic below

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