micknmeld wrote:
Got the carbies out and stripped down, hit them with the magic spray and after my head stopped spinning from the fumes, I put the carbies back in the bike. Hit the button and it fired straight up! My excitement was short lived though, as it is still bogging at low revs and won’t run without the choke on , although it revs out fine up to 14,000 rpm. So it appears there is still an issue down low and the revs fluctuate at idle. Any ideas were to go from here?
If you leave your bike sitting with fuel in the carburetor for any length of time the fuel evaporates and leaves a residue which hardens and sets like glue. Carby clean will clean the components but isn’t a magic fix for all that is wrong. The choke is richening the mixture if you think about the operation of the carb the pilot jet feeds fuel from idle up to 1/4 throttle then the main jet needle takes over fron 1/4-3/4 throttle and the main jet handles 3/4-full throttle. The airways have been blocked in the body of the carb and because they are so narrow the pilot circut is always the first thing to block. The jets are extremely small and carb cleaner alone will not clean out a gummed up jet, soaking in fuel injector cleaner or something similar then high air pressure will help. Try high pressure air through all of the jets and carb body . If this doesnt work try acetone and soak the carb to soften the residue and then hit it with the air again. One problem with the acetone though, it will wreck all of the rubber gaskets your carby may have , so remove them first. If you have it out make, sure you can see through it and even run a very small wire through it, but be careful not to use the wire to score or scratch the inside area of the jet.
If you have the mixture screws out, wind them in first count it till it bottoms (write it down) and when putting back together bottom then and wind them out the same amount as you will have to balance them otherwise. For the amount of use the lady that rides this you will get away with the mixtures close enough.
TB
oh and you as well Jeffro and Mick. All the best for the day