Clinician
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Post by kajin911 on Aug 21, 2011 15:10:50 GMT -6
! This site is the best support forum I’ve come across in a long time thank you all!
I adjusted the valves as suggested the exhaust valve was right on, the intake valve was touching so I can’t tell how far off it was. All is adjusted fine now. It was an easy job because I already had all the plastics off.
Unfortunately all that did was increase my idle so I re adjusted it back down to just under 2k. At this point I was bummed it still was drowning as soon as I juiced it.
I decided to take the carb apart one more time. I checked the float before to be sure it was working as it should and it seemed too but it wasn't closing the valve until it was almost all the way to the top. I bent the tab up so it would close a little faster and presto we are back in business its running like a champ. I am assuming it was the valve adjustment but it is way more responsive than before it always had a hesitation but not bed enough for me to worry about I just figured it was a cheap Chinese scooter but man it runs like a jap bike now for sure.
Thanks again for your help
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Clinician
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Joined: Aug 19, 2011 19:23:39 GMT -6
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Post by kajin911 on Aug 20, 2011 20:20:38 GMT -6
Well no luck, I removed the carb it all looks brand new and everything seems to function fine. I adjusted the A/R screw 2.5 turns then played with it ¼ turn at a time in and out but it makes no difference at all that I can tell. Not sure what to try next, I did try new gas but no luck there either… Thanks for the help so far!
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Clinician
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Joined: Aug 19, 2011 19:23:39 GMT -6
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Post by kajin911 on Aug 20, 2011 10:08:55 GMT -6
I haven't changed anything yet, but thank you for the info! I am new to these scooters. I will try your suggestions is there a "default" setting for the sir flow screw? it is the one nearly imposible to get to on the bottom of the carb right?
thanks again
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Clinician
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Post by kajin911 on Aug 19, 2011 19:47:40 GMT -6
I have a mc-54-250b and it acts as if it’s starving for gas. It won’t accelerrate very well at all. however when I take the air cleaner off it runs fine back to 70MPH. as soon as I put the air cleaner back on it idles fine but sputters if I hit the gas. It does it when I put the housing on even without a filter in it. There is no blockage in the rubber boot that leads to the filter housing. I am at a loss not sure where to go from here?
It only has 400 miles I bought it new in 08.
Any help is appreciated
K
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