SOHC.co.uk Forums > CB500/550

500 four reluctant to rev

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mickwinf:
out for a ride today and bike was going well mostly, except it doesnt seem to want to rev above about 5000 rpm. A bit of background for anyone who is new to the story of Lazarus the 500 four brought back from the dead. engine has had a full rebuld with rebore and pistons etc with about 200 miles on clock since. after working through a few snags it now runs nicely, carbs were also rebuilt, all standard jets and airbox etc. as i am running in the engine i havnt really given it the beans yet but today tried to accelerate a bit quicker but once at about 5000 rpm it seemed very reluctant to go any higher. there was no missing or spluttering it just would not rev any more. I am wondering if my float hight is wrong? it feels like its not getting enough fuel. any thoughts would be greatfully recieved. oh fuel tap is original honda not a cheap chinese and is clean and clear.

florence:
are the throttles opening fully?

neat street:
I would also check fuel flow from the stop cock, could be a build up on the internal filter??

mickwinf:
Peacock filter is new and cable opening fully.

Bryanj:
Restricted intake, trousers under seat?

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