The old girl is sick22

[topgun44]

hi all
Need some help the bike as start to [size=78%]STUTTERING [/size]   in low Rev up to 5 thousand then it  clear pull like a Train up to end off the gear it fazer 600 year 2000 I have clean and oil air filter (k&n) number 2 plug was  slightly bent at point off the plug so I got new one as the other are only year old  I adjust gap to o.8 m which it say in the book and I have  notice  That 2/3  downpipes  Don't get hot as 1/4 when you stray water on them 2/3 stay on the pipes 1/4 just burn away in secs so I was thinking could it be the coil on 2/3 playing up but would it play up all the time  (as it fine when you get pass 5 thousand rev) oh done the  carbs  took them off clean them put them back on and use carbtune to set them plus I cut back ht leads bit push the cap back on so I bit lost what to do next bike never play up like this before I have her just over 4 years know hope some one can help cheers

[His Dudeness]

Try swapping the coils. If the problem moves to 1 and 4 then you know for sure the coil is the problem

[topgun44]

Do you mean leads from the plugs from the coil and swap over so 1 would be 2 2 would be 1  by leads only    sorry I confuse 

[topgun44]

I try swap the ht leads bike will not fire up plus I try swap power leads  which go in back off the coils  swap them over it will not not start      Swap them back fire up again so I guess you can't swap them over all I doing some thing wrong 

[His Dudeness]

You'd have to completely disconnect both coils and swap them around. So disconnect them from the plugs and disconnect the wiring going into the coils. Take note where the wires go. Then swap the two coils and if the problem moves to 1 and 4 you know that the coil is the problem.

[topgun44]

hi dudeness
I swap the coils around and they do get hot o I swap them back bang it ok again maybe loose wire? well going out for 100 miles ride in the morning see what happed?
thanks for your help 

[His Dudeness]

No problem. Well done. Hopefully it's sorted now. Anytime I've had low rpm stuttering that's cleared up higher up the rpm range it's been from arcing from the spark plug caps to the head. If your problem comes back try starting the bike in the dark and look for little sparks around the plug caps. These are a good replacement for the original caps and well worth getting even if there's no visible arcing because the original ones are getting fairly old now http://www.ebay.co.uk/itm/NGK-SD05F-Spark-Plug-Cap-Resistor-Cover-Black-8022-/271683682246?hash=item3f419bffc6:g:s4wAAOSwY45UR3BF

[topgun44]

Thanks again for that link well I went out for long ride to the seaside (the chips were yum yum) back on track yes all the way there did not miss a beat run like a dream have my chips did I say there was nice ok jump on bike ride back home got to first roundabout drop down few gears when around it pull the throttle back yes it start to stuttering again got pass 3/4 thousand regs and it took off like a train again did that all the way home so I going to wait for dark have a look to see if the leads are acring and I think I will get new set as the bike 16 years old in sept it can't see any thing it might been acring inside the plugs? Then I might have to get new set off plugs as well

[topgun44]

Yep number 2/3 lighting up like Christmas tree order new set of eBay to night dudeness you are a star thank you again

[His Dudeness]

 

[topgun44]

update got the plugs today fit them them and she not sick anymore well chuff thanks again