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Post by scootercapecod on Mar 18, 2013 17:42:25 GMT -5
I took my scooter out today after finally fixing the exhaust issue I had (see thread "Exhaust stud broke...") and it performed great, seeing as I read often that raising the needle can help at top end. Needless to say I got to thinking and took the top end of the carb down, reset the needle pin just 1 step raising it. I was hoping for better top end performance but that didn't happen, in fact it slowed me down! It isn't really bogging but it's slow to takeoff and doesn't get to top end at all, should I drop the needle 2 notches to see whether that will bring it to life?
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Post by terrilee on Mar 18, 2013 17:55:52 GMT -5
as you know im NOT a mech
but i think you have to also
adjust your a/f screw
wait till one of the carb guru's
chime in
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Post by teddy554 on Mar 18, 2013 17:59:17 GMT -5
put the the clip lower on the needle raise(richer) the needle putting the clip higher drops the needle (leaner)
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Post by scootercapecod on Mar 18, 2013 17:59:20 GMT -5
Thanks for the reply, I have tried that, I'm usually the one posting a lot of the info but this one has me miffed
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Post by scootercapecod on Mar 18, 2013 18:01:52 GMT -5
What I did was put the clip lower 1 slot (raising the needle)to enrich, could it be I was already rich and went too far?
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Post by teddy554 on Mar 18, 2013 18:04:11 GMT -5
sounds like it, bogging usually means your rich
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Post by wutzthedeal on Mar 18, 2013 18:15:47 GMT -5
Have you tuned the a/f since the change? Do that first to see. Raising my needle (dropping washer) made a big improvement in power and top end speed consistency. Since I've changed carbs, I've lost a little of the power feeling and this needle doesn't appear adjustable... screwed down into the hole.
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Post by scootercapecod on Mar 18, 2013 18:32:36 GMT -5
wutzthedeal, yes I have tried adjusting and no results worth mentioning, It just sounds like I went the wrong way on the needle and will correct it after yet another friggin winter storm hits us tonight!!!
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Post by millsc on Mar 18, 2013 22:50:41 GMT -5
some carbs are just crappy, i've had a few carbs i never got to act right  |
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Post by scootercapecod on Mar 19, 2013 7:16:19 GMT -5
Damn, I woke up this morning to 6" of friggin snow!!! That said, scootering is out for a few days....
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Post by millsc on Mar 19, 2013 8:08:07 GMT -5
sounds like missouri, 80 one day and 30 the next, saw people without shirts last week now all have on winter coats again |
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Post by scootercapecod on Mar 21, 2013 23:50:35 GMT -5
Well gang, leave to me. I went to tear down the top end of the carb to reset the needle bac to where I had it only to discover a vacuum line was off. Instantly the light bulb went off over my head. Hmmm, could THAT little oversight be my issue?..... YES!!! Simply put I got that back on where it was supposed to go and the scooter came to life! The only difference is now it sorta hesitates before picking up and taking off like crazy! Top end is only marginally better, maybe 1-3 MPH at best but still great anyway. On hills it really pulls and I don't feel any kind of worry when I approach even the steeper hills in town. It even can accelerate on an incline so no more issues there (not that were before but this was a noticeable improvement).
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Post by alleyoop on Mar 22, 2013 0:04:42 GMT -5
Since you raised the needle lean out your Pilot Jet, now it is getting to much fuel at the low end.
Alleyoop
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Post by scootercapecod on Mar 25, 2013 19:00:15 GMT -5
With a free flow air filter I should lean it out? Well, ok not made as a free flow but getting that performance out of the modded stock air filter. I'm not sure what the stock pilot is but either way it's running ok now. just like i said, slight hesitation when accelerating then pickup like crazy and ZOOOOOM!!!
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Post by vbrider757 on Mar 27, 2013 0:12:13 GMT -5
My vip only has one spot on the needle and sugestions?
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..BAD TO THE BONE..