CB550 F2 project

Hi all, still not got back to doing the stand yet because I discovered other issues with the bike and I wondered if anyone had any ideas: -

1st was some tiny bubbles I could see around the head gasket when the bike is running, they seem to go away once it is warmer and I guess things have expanded.

2nd Performance is not great, it really struggles quite a bit to get to 70 yet it sounds fine and revs freely, up to 50 / 60 it seems happy.

3rd I seem to get a fair delay in the throttle response and sometimes a dip before the power kicks in when putting a fair amount of throttle on.

I checked that it was firing on all cylinders and everything seems ok in that respect at least.

I've had a twin for the last few years and before that a V4 so not really much experience at all with the older straight 4s. Thanks alot in advance for any advice on what to do or check for.

Carbs or timing. Honda have a timing advancer which can gum up and cause poor performance. Worth checking.

Thanks mig,Hopefully I can try and look at the timing advancer and see if it looks gummed up or not. Apparently the bike had new plugs and an oil filter just before I bought it, but maybe I should double check the plugs too could they cause this kind of issue or do they just work / not work?

-The bike is looking great

Impressed Ian, you've done more in two weeks than I have in 14 months!

Attention all the Honda CB 550 lovers and lurkers...

CB550 F2 Fuel Tap... Desperately needed by my mate Beth. If you have one, or know where we could look please email info@thebikeshed.cc

Thanks,