Bridgestone Motorcycle Parts Discussion Board

Bridgestone Tech Talk => 50, 60, 90 & 100 Talk => Topic started by: wardie on July 06, 2016, 11:20:58 PM

Title: 60 sport won't stay running
Post by: wardie on July 06, 2016, 11:20:58 PM

Need some help guys. My 1964 Bridgestone 60 Sport won't stay running. I put the choke on one kick firs right up and after 3 maybe 4 seconds stalls right out. Compression 110 lbs and has new crank seals . Carb recently ultrasound cleaned.

Vent hole open on cap.

Idle mixture screw set at 1 3/4 turns out. Maybe I should open the mixture screw more?

Any help would be appreciated. Trying to get her going for Mid Ohio

Title: Re: 60 sport won't stay running
Post by: OldSwartout on July 07, 2016, 08:45:24 AM

Since no one else has made any guesses, here's mine.
That's something I've not seen before, so - wild guess - float level too low, fuel level drops below idle jet almost immediately?
Does it do it repeatedly, or once it dies, won't restart at all?  If it won't restart a second or third time, check for spark after it dies, maybe a coil issue.