
Originally Posted by
Icemaestro
Do any nc30/35 owners have a spare set of new or lightly used/known to be good carb rubber adapters?I suspect my ebay ones may be part of the cause of my carb troubles, but a new set seems to be at least 42 pounds or so (havent heard back from Rick O yet).
My NC30 carbs are driving me nuts - all seals etc have been replaced inside the carbs, I've cleaned them out with carb cleaner (though next job will be to go through with toothbrush), and carbs synced. However 1) choke doesn't seem to do a thing, can be very difficult to start from cold, 2) poor idle when either cold or warm, 3) slow to return to idle when rev'd when warm, 4) Crap power from idle to 7000RPM (over 7k is fine) I have also noticed that when I pull the choke in when riding above about 60km, my revs stay at about 2500 when stopped they settle to 1500. In particular I think the main problem is with the back right cylinder which is cold/warm (not hot) at idle, but warms up when rev'd.
I am running 115F/118R main jets (which I think are fine, though could probably increase) yamamoto half system and everything stock, including new air filter and plugs. As said earlier the carb to manifold adapters were the 30$USD ones from Ebay...they looked fine though?
My thoughts are that I need to replace the carb rubbers, open them up and clean out the pilot jets with toothbrush/wire, check/set float heights and check/replace the needles.
Anyone have any thoughts or good/cheap ideas?:-P.
I have read (though not done it myself) that the trick is to get the thing running then spray WD40 onto the carb rubbers when engine is running. You would do each one sequentially not all four together. If white smoke appears then that carb boot is sucking air in because it has also sucked in WD40.
Basically you could suck it and see right?: five minutes before you commence your stripdown. The idea I guess is that it is a complete PITA to get anywhere near an NC30's carbs particularly with the airbox in place. Like i say I have not tried it but am interested to see if it works.
I thought elections were decided by angry posts on social media. - F5 Dave
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