Hey guys, in need of some suggestions on what might be causing my bike to not run properly.
I have a 1971 CB450 with 14,000 miles. Rebuilt except the motor.
Pamco ignition
New single unit reg/rect
Rebuilt and ultrasonically cleaned carbs with factory jetting
Rebuilt the air cleaner with form and oiled
Baffled aftermarket exhaust
Adjusted valves
Coated gas tank with new petcock and lines
New battery last year
Idles when hot at about 1600RPM
This bike has been in and out of the shop for various things and I had it running well for about 3 weeks but noticed it was blowing a lot of smoke and my plugs were getting pretty sooty. Also when cold starting the bike it would take about 5 cranks on the button to get it running. It will idle fine but when I kick it into gear and ride it it's definitely only running on 1 cylinder, but when I rev the motor up high and struggle around the block a few times the other cylinder frees up and it runs good.
I'll get it to the pub go have a beer, come back out and it'll fire back up, but then embarrassingly as i ride away its again running on only 1 cylinder. It takes me revving the crap out of it and ridding it for a couple minutes to get both cylinder going.
After this I determined it was running too rich so i turned in both mixture screws 1/8 turn and changed the plugs, now its not burning so much out the pipes but the other issues still persist, and the other night it was stalling at red lights.
Any help appreciated.
-Mike
I have a 1971 CB450 with 14,000 miles. Rebuilt except the motor.
Pamco ignition
New single unit reg/rect
Rebuilt and ultrasonically cleaned carbs with factory jetting
Rebuilt the air cleaner with form and oiled
Baffled aftermarket exhaust
Adjusted valves
Coated gas tank with new petcock and lines
New battery last year
Idles when hot at about 1600RPM
This bike has been in and out of the shop for various things and I had it running well for about 3 weeks but noticed it was blowing a lot of smoke and my plugs were getting pretty sooty. Also when cold starting the bike it would take about 5 cranks on the button to get it running. It will idle fine but when I kick it into gear and ride it it's definitely only running on 1 cylinder, but when I rev the motor up high and struggle around the block a few times the other cylinder frees up and it runs good.
I'll get it to the pub go have a beer, come back out and it'll fire back up, but then embarrassingly as i ride away its again running on only 1 cylinder. It takes me revving the crap out of it and ridding it for a couple minutes to get both cylinder going.
After this I determined it was running too rich so i turned in both mixture screws 1/8 turn and changed the plugs, now its not burning so much out the pipes but the other issues still persist, and the other night it was stalling at red lights.
Any help appreciated.
-Mike
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