Try our new info resource - "Aladdin's Cave" (Main menu)Just added a separate link to Ash's Dropbox thread (shortcut)
[...]Another observation, the Boyer ignition is very, very competent in it's delivery. I've no problem working with the std system, believing it to be mechanically almost peerless in it's design, application and component specification .... the Boyer i can see by comparison does offer tangible benefits if that's chosen by the owner though.Among those benefit appears the ability to fire more adverse mixture range more of the time with exceptional repeatability. This seems to support a more optimum idle mixture that may give benefit in any residual unburnt component/fuel that may be affecting the fouling determination this topic is about.[...]
You're making the assumption that I've said it needs more power (supplied by the Boyer ? ) which is not what I've stated.
Question .... can you describe the failure mode within the combustion chamber which gives erratic acceleration response as you've described it ? In other words, why are you not getting a perfectly linear response with the settings you have.
Honda never state (as far as I appreciate) that you have to use equal idle circuit settings, just a suggested start point, [...]
Interesting thread. This fouling at idle - is this when the revs drop after running steadily for 20 seconds and can be cleared by revving the throttle to restablish the steady idle? Mine does have that tendency on the denso plugs but also one cylinder which is cooler than the others so I’m guessing that’s the one that fouls. I have found on many different bikes cars lawnmowers-that iridium plugs give better starting, smoother idle and avoid fouling on two strokes. It seems there isn’t one available for the 550 - why not ?
If there's response by swapping the leads over (within one oil pack) then analysis of why that could happen may give answer.There's specific performance in the condenser relating to this (if the original system is in place) with it's ability to fire the mixture.The opposite ends of the coil have slightly different spark characteristics, with also the condition in cylinder from the live one to the wasted spark one maybe causing a bias to disadvantage the live cylinder on compression and give a shift in performance to that cylinder. Swapping the leads checks for that, also the insulation of the HT too.