Hi guy's ,
Hope you can help me with the problem i have with my CB350f .
After rebuild of the engine and carburetors i fitted the following.
35 slow jets
85 main jets
Needle clip in second position from the top
Floats on 22 mm
Airscrews on 7/8 turns.
Valves clearance st to 0,05 mm
Vacuum synchronized all 4 carburetors.
New d8ea spark plugs.
Open pods.
4 in 1 headers and collector and completely open muffler.
When i start the engine it runs OK and i almost don't have to use the choke. The first few miles it runs fantastic through the complete powerband but after a few miles, 5 or 6 or so it starts to run like it is running on two cylinders and only in higher revs it will pick up on all 4 again but never like in the first few miles. When i stop the engine stops or runs crap. When i restart the engine after a few minutes all is happening exactly the same again.
All the 4 spark plugs are a light brown/tan color when i get them out.
Adjusted the airscrews from 7/8 till 2 turns out and i replaced the needle clips from the second to the third, fourth and fifth position without result.
I really tried anything and now i still have this problem.
Who knows what to do?
Thx for your help!
