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CB650C Recommission

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Clunker:
Well I got back on the bucket and pulled the carbs off again, I had managed to dislodge the diaphragm on the accelerator pump. When I removed the float bowl on no.2 carb I noticed a snot like substance in the bowl so I gave it a wipe out. Then I removed the other bowls and found the same crap in them as well.
The PO told me when I bought the bike that he had put clean fuel in the tank, he didn't mention that he hadn't drained the old fuel out first though. I emptied the tank into a bucket...............I have never seen fuel look as bad as that before! In the bottom of the bucket was a load of what looked like black silt with green snot mixed in, with a layer of really dirty petrol floating on top.
I had some clean but old petrol in the shed so I poured a couple of pints in the tank and gave it a right good swilling around then emptied it out, still dirty so I did it again and I think I got most of it out.
I put fresh fuel in and put the tank back on the bike, tried to start her up but the choke lever won't move, not even a bit ??? Took the tank back off and operated the choke pulley by finger tip underneath the carbs, it moved very freely, thought I'd pinched the cable somewhere but couldn't see anything obvious. With the carbs in place on the bike you can't actually see the choke pulley where the cable locates so I traced along the cable with my fingertip, it wasn't connected to the pulley but was trapped inside the airbox rubber.
When I refitted the carbs it must have slipped out of the pulley and hung loose until it got in the way of me connecting up the airbox rubbers ::)
I freed the cable and put it back on the pulley then tried to start her up again, choke worked fine, bike started but something didn't sound right, 1+4 headers were cold and 2+3 were hot.
This is the part where I love having two of the same bikes (or very similar) at the same time.
I borrowed the left coil from my Nighthawk and put it on the Custom, still the same, no spark on 1+4 so I moved on to the spark igniters, swapped both of them just to save splitting them, sparks on all 4 plugs  ;D.
I put the plugs in, tank on, fired her up, all headers getting warm, let her run till she no longer needed choke. Switched her off then started her again, did this a couple more times just to check for any problems.
I forgot to mention that when I rebuilt the carbs I replaced the slide and needle in number 4 carb as the original slide had some deep scratching and the needle was distorted, probably due to the resin bodge on the carb body. The replacement slide and needle came from some CB650Z carbs but were exactly the same as far as I could tell.
Due to the PO's rather fanciful stories about he "did this" and "checked that" :-\ my next steps are going to be to free off the clutch while changing the oil and filter which he said he had done, check the valves like he said he had done....then balance the carbs and adjust the mixtures with my glass spark plug. So that is how she stands at the moment. I didn't take any pics of the above stuff as I just pulled up a bucket and started fiddling and one thing just led to another. :)

mike the bike:
Good bit of fault-finding going on there, glad it all works.  How do you get on with the glass spark plug?

Clunker:
To be honest Mike, I've never used one on a Honda before but they helped set up my kwaks a treat, made them purr like kittens on tickover and roar like lions on the road. Have you used one? anything I should look out for?

mike the bike:
Never used one.  I like the theory of them; adjusting the mixture to the right colour for most efficient burn, just like a gas boiler.   Some things are more trouble than they are worth, I wondered what they're like to use.

hairygit:
I've used them many years ago on cars with SU or Zenith Stromberg CV type carbs and they were okay, but not much use on fixed jet carbs other than to adjust the idle mixture. Mine was a "Colourtune" made by Gunson, but proved pointless on most bike carbs, as to sort the mixture above idle meant dismantling to adjust needle height or jet sizes.

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