[Pandreini]

Hi Everyone,

I need some help before I jump off a bridge. I have a 69 CB350 and I just installed a new stock cam. After following the Honda manual step by step for installation, valve clearence, cam timing, ignition timing, etc. I installed the motor hooked everything up and kicked it over, Presto! shes alive. It ran on and off for about 5 min while I was doing some carb adjustments. I noticed that the left side exhaust pipe didn't have as much compression but thought I'd address it later.

After the motor stopped I went to kick it over and was unable to push the kickstarter at all. Pulled in the clutch and rotated just fine, made sure I was in nuetral, and adjusted the clutch again per the manual just in case.

Pushed it back into the garage and took off the alternator cover to see if I could manually rotate the motor. Started at TDC and was able to smoothly rotate 360 degrees. As I approached LT it becomes very resistant and stops.

Need some suggestions

 

[Rizingson]

Did you adjust the tension on the timing chain? If not it may have jumped a tooth. At any rate it sounds like the a piston has interfered with a valve.

 

[seisdatex]

Does the resistance remain with the plugs pulled?

 

[Pandreini]

might be. Ill try to look into that. I really don't want to pull the motor out of the bike again....

 

[Pandreini]

Does the resistance remain with the plugs pulled?

Yes. I pulled the lugs first and it still didn't move

 

[66Sprint]

Sounds like one of the valves is bent, although it could be something else....I'm afraid the engine will have to come back out of the frame so you can find what's stopping the piston's rise.....

 

[Pandreini]

Sounds like one of the valves is bent, although it could be something else....I'm afraid the engine will have to come back out of the frame so you can find what's stopping the piston's rise.....

Well I guess I'll start taking things back apart. I was so close to finally taking it for a ride.