SOHC.co.uk Forums > CB750

more help please

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Spitfire:
It definately sounds like a carb/air filter/exhaust issue, check the carbs again, float height especially, and beware of discounting things because you have checked them already. I can remember timing a 250 AJS once and could not understand why it would not fire, it was set up perfect, I checked it time and time again but found nothing wrong, until I went back to basics and found that I had been timing it backwards !
Check the carbs by the book.

Cheers

Den

K2-K6:
Are you certain that you have fuel going into carbs 1+2 ? as some of the setups have different fuel supply routes to all four or two and two type pipework going from tank to carbs.

If you definitely have fuel, then try blowing down the overflow tube of carbs 1+2 when it's running as this should force fuel up the main jet and you should get a difference in running on that cylinder.

pastyman:
when the engine is running and i put my hand flat against the back end of the carb i can feel suction on my hand, and when i remove my hand it has fuel on it

cheers everyone for help will try all your suggestions before stripping it all down again and start again from the beginning as i think i must be missing something obvious

kaceyk2:
Caliper seal from DS

SteveD CB500K0:
That's 16% KC

Would you say no to a 16% pay rise?

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