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 Topic: New Member with An MC18...wait.....no...an MC16...yes MC18 







Hudtm60
Supporter - Titanium
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Hudtm60 » Sun Oct 05, 2025 7:26 pm

Thnaks Andy...with that in mind I put in some brand new plugs...taking out the old ones was interesting...the rear (left in the picture) is running too lean for my liking....it's the front one now that's having problems kicking in...


as a reminder this is the jetting with a fully stock airbox
Keihin TA20A
No.1
Main 130 (Now 135)
Slow 38
Needle BPD, Power Jet 70
No. 2
Main 132 (Now 138)
Slow 38S
Needle BPE, Power Jet 75

So after disconnecting the correct black/blue wire here...


....I screwed the airscrew in 1 full turn on #2 carb to try and richen it a bit and took it for a spin.....but no good....front cylinder just won't kick in after 2-3000rpm- I know what you are thinking....one post I'm saying it was the front next post I'm saying it's the rear- to be honest I've a feeling it's switched- not sure...all I know is that, today, the front pipe is not as hot as the rear pipe.

Yesterday I DID try the timing light on both HT leads and it was flashing all the way up to 10,000 rpm- but hard to tell if that's accurate...but I'm beginning to think it's the coils so I parked it safely on the lift and that's probably going to be it for a while because we have to move house and I've been doing bugger all to help pack so....not sure what'll happen next but I have a new screen on order from Tyga so that's good.

This is the coil test procedure I'll try next...I've read from you guys RS125 coils work?..hard to know what I should test next....the carbs have been apart twice double checked for any obstructions...RC servo refurbed by T2 Racing...I now have a 2 full sets of black boxes.....PGM CDI, RC Controller, sub controller...and all seem to work...plugs switched out multiple times...plug caps replaced..


....next might be to investigate the pick ups (#4 below)...anyone using any upgraded reproduction replacements?


The decidedly second hand screen


No screen, no bother....


...if this bike ran on two cylinders it would be a rocket...Smile

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