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Mike's CB550 Project

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Oddjob:
Gauges allow for small differences in the way the slides open, some set up well stationary but as they bed down with use they can alter very slightly, gauges allow you to reset them back to best.

Mike_Berkshire:
The hanging seems to be fixed now; somehow. I started and ran the bike this morning; allowing it to warm up before I used a strobe light to set the timing. Timing was out by a few degrees - in front of the F mark so retarded? Since I posted I had a hanging problem I have stripped and cleaned the carbs; replaced the old idle jets with 'new' Honda ones, re-set the float heights to 22mm; 2 were way out and re-synched the carbs on the bench so the slides are just opening. Before I bench-synched with a small gap using a drill bit as a gap tool. I have also fitted 2 in-line Aeroline fuel filters. Idle air screw is out 1.5 turns on all 4 carbs.

Another thing I noticed when starting the bike this morning was that when I turned the fuel tap on there was an audible release of air pressure. I also got this when I opened the fuel cap to check the fuel level in the tank. I have an aftermarket fuel cap from DS and when I checked the vent hole I found that a piece of cotton wool or similar was pushed into the little vent hole; presumably to prevent ingress of dirt. However, it was so tightly pushed in that it was preventing the air from getting in the tank so I removed it.

I don't seem to have any hanging issues now and the plugs which were super sooty are now a nice tan colour with no oil or soot.

The remaining issue is that the bike is not eager to pull away from standstill and needs more revs than I think it should. Im going to be investigating this next but if anyone has any pointers for this issue please point!

Bryanj:
What do you call more revs? I use about 2 to 2.5k

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