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Andy1976:
I'm still struggling to get my bike started.
I have done/checked - carbs,cleaned out jets
                               fresh fuel
                               new plugs with correct gap
                               batery checked and ok
  
I'm unsure about checking electrics, all the wires seem ok and conected properly.
            
             Cheers


              Andy

SteveD CB500K0:
Does it fire/misfire/spit/pop at all?  If not then check the 12V side of the ignition.

Are the plugs wet? If so you have fuel so that's one thing off the list as fuel + spark = bang (even if it is a misfire)

If plugs dry then no fuel so check to see what you put back into the carbs upside down...  ::)

Off to France tomorrow on my Sprint so won't be posting (much).

Spitfire:
Have you checked for a spark, pull a HT lead off put a spark plug in it, ground it against the cylinder and turn the motor over (kill switch), you should see a spark, as Steve has said wet plugs show that fuel is getting through. You need sparks, that's plugs, coils and electrical trickary, the spark has to be at the right time, points and timing. Is there any power at the points. You need fuel from the carbs, is it coming out of the tank, are the float bowls filling up, you also need air (in the right place), how is the air filter and carb rubbers.

Cheers

Den

Andy1976:
I've been outside this morning working on the bike. It's only sparking on no.3 theres nothing on the others. Since cleaning the jets, no.2 carb is leaking fuel everywhere. The float bowls were full when I took them off.The plugs don't seem wet (no.3 seemed damp), but they do smell of fuel. Maybe a complete carb overhaul? The battery is reading 12.35v so I think this is ok. The ignition system is electronic by Boyer Bransden, should I go back to points system? I also noticed two of the carb rubbers from the airbox have small splits on them, the inlet rubbers seem in good nick.
      When I tried to start it before it made a popin noise and also a huge backfire (scared the crap outa next door ;D).
         I think I'll be ok sorting out the carbs but electrics arn't my strong point.
                   
                   cheers
                 
                   Andy
           

Spitfire:
Hi Andy, what is the history of the bike, was it running when you got it ?
It would probably be a good idea just to do a basic service on the bike, valve clearances, timing, carb set up etc just to make sure that the basics are correct. Sparks are paired, 1&4, 2&3, if you have a spark on 3 you should have a spark on 2 as well, what condition are the HT leads and plug caps, what plugs have you got.

Cheers

Den

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