Bike wants to stall when clutch is fully engaged...timing?

johnnyroastbeef · Post by **johnnyroastbeef** » Fri Aug 19, 2011 8:14 am

I posted this thread in the transmission forum and it was siggested it could be a timing issue,please let me know if anyone can diagnose for me:

i have a '68 CB77 SUperhawk. It's been sitting 25 years. Yesterday i cleaned the expterior of the motor (with degreaser and water,) and after that the bike didn't run right. I was shifted it into 1st gear and from a stop the bike shuddered and clanked loudly and stalled. I assumed I was in the wrong gear. it sputtered just like it would if you tried take off in 3rd gear. When it stalled i made sure it was in 1st gear but it was kinda tough to get it into first gear for some reason. the shifter didn't want to move easily. so when i started it i had to "ride the clutch" to get it to move...still seemd like it was in 2nd or third gear as it shook and clanked kinda loudly. Is my tranny finished or does anyone have any suggestions as to what could be causing this?

Davomoto commented, "Sounds like you got some water in the points or other electrical, and it's only running on one cylinder. Make be other issues as well. The arm that goes on the splines for the shift shaft should ne at 11:00 or shifting will be affected. -Davo"

johnnyroastbeef · Post by **johnnyroastbeef** » Fri Aug 19, 2011 8:15 am

well i opened up the cover with teh ignition timing and it seems to be arching awkwardly. I can see the points on the right hand side making sparks every once in a while. The bike runs smooth and sounds nice in neutral. It fires on both cylinders and doens't seem to be any issues there. Now when i take off in 1st gear the bike sounds normal until I let the clutch out 100% and then it clanks and wants to stall. Could it sitll be a timing issue? Could water have gotten somehwere else that making this bike buck and shake and wanna stall?? Any suggestions would be greatly apprecaited as I'm kinda stuck here. Thanks in advance.

Tango911 · Post by **Tango911** » Fri Aug 19, 2011 8:38 am

Does the sound come from the clutch area. maybe it needs taken out and cleaned. (the clutch basket that is).

johnnyroastbeef · Post by **johnnyroastbeef** » Fri Aug 19, 2011 8:52 am

Tango911 wrote:Does the sound come from the clutch area. maybe it needs taken out and cleaned. (the clutch basket that is).

It really is hard to say which side since the bucking and clunking is so hard it makes hte whole bike jerk and buck and stall. I guess I should take the clutch apart and clean up the plates. It can't hurt. It jsut seems odd that right after i washed the motor that it all this started happening.

johnnyroastbeef · Post by **johnnyroastbeef** » Fri Aug 19, 2011 9:49 am

here's a link to youtube.com where i took some video of teh timing points. Maybe somebody can look at it and see if this kind of arcing from the points could be causing this issue:
http://www.youtube.com/watch?v=ND8uiUnxFl0

brewsky · Post by **brewsky** » Fri Aug 19, 2011 7:18 pm

I would get a new condenser.

LOUD MOUSE · Post by **LOUD MOUSE** » Fri Aug 19, 2011 8:11 pm

The points which ark are dirty.
Plane and simple.
If ya can spray with a contact cleaner than while closed Pull a Business Card through them.
This will clean that one and while ya at it ya should do both. ........................lm

johnnyroastbeef wrote:here's a link to youtube.com where i took some video of teh timing points. Maybe somebody can look at it and see if this kind of arcing from the points could be causing this issue:
http://www.youtube.com/watch?v=ND8uiUnxFl0

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Bike wants to stall when clutch is fully engaged...timing?

Bike wants to stall when clutch is fully engaged...timing?