Author Topic: ..scoot shuts down..  (Read 8309 times)

wordslinger

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..scoot shuts down..
« on: June 28, 2010, 10:44:25 PM »
..so i was riding home today...not wide open, just kinda throttling back from time to time...

..scoot shuts down...

..won't fire, tries to fire and run, but it just won't ....

..a bud comes by, sees me, stops and we load it in th back of his truck..

..drop it out at home and it fires immediately when i hit the starter button..

..however...there seems to be a "hissing" sound from the carb that i don't ever recall hearing before...

..it'll run..but i don't hear the pop-pop-pop at idle throttle like before...more like pss-pss-pss...

..cracked reed?

..not that I know just how th' f8ck a reed works,  ;D

..  ??? ..

« Last Edit: June 28, 2010, 11:13:34 PM by wordslinger »
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wordslinger

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Re: ..scoot shuts down..
« Reply #1 on: June 29, 2010, 12:57:41 AM »
...upon further inspection, and let me give some background..

..i took out the 748-18-28 belt, due to the damages it sustained during my a50 ncy torque drive delima..

..installed, what i thought was the "new" 23100" belt i had, but was actually the belt that was on th' ppl when i bought it...

..mistake...

..because, i had went to 9 grm rollers with the long belt, and they apparently put too much pressure on that old belt...

..snapped three teeth from it, and that's when my scoot died...

..over-revved?? when the belt slipped on the torque driver??

..scoot runs, but with much less oomph...

..reckon i'm gonna get into some two-strokin' experience before i really wanted too...
..every mod (action) necessitates a (reaction) mod..

art

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Re: ..scoot shuts down..
« Reply #2 on: June 29, 2010, 02:33:32 AM »
That don't sound good.Whats the plug look like.Try another and cross your fingers.check the compression.
Kymco peoples too many ;) I'm not an expert just a full time hobbiest.

wordslinger

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Re: ..scoot shuts down..
« Reply #3 on: June 29, 2010, 04:39:01 PM »
..plug is dry and a rich brown color...

..put new plug in, with no change..

..i rode it to work today, and it has definately lost some power..

..initial take-off is almost normal, but then engine drops rpms, and the power loss..

..i never attempted to wind it out...
..every mod (action) necessitates a (reaction) mod..

art

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Re: ..scoot shuts down..
« Reply #4 on: June 29, 2010, 07:27:59 PM »
Maybe some old filter in the main jet or compression loss comes to mind hope it's a jet.
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wordslinger

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Re: ..scoot shuts down..
« Reply #5 on: June 29, 2010, 08:47:17 PM »
..not old filter for sure..i'm runniing a k&n..all that's been eliminated and the carburetor thoroughly cleaned...

..everything was fine until the teeth snapped from the belt...

..then it just died, and would not fire enough to crank and run until it cooled down...

..to check the reeds, i only need to remove the intake manifold, correct??

..are the seals generally re-usuable, or should I wait until i order some to dis-assemble...
..every mod (action) necessitates a (reaction) mod..

art

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Re: ..scoot shuts down..
« Reply #6 on: June 29, 2010, 10:53:37 PM »
Ya the intake is easy.Iv'e been lucky on all my scoots as far a re-using gaskets,but theres allways that one!
Kymco peoples too many ;) I'm not an expert just a full time hobbiest.

wordslinger

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Re: ..scoot shuts down..
« Reply #7 on: June 29, 2010, 10:56:54 PM »
..cool..

..can you think of any reason that a belt dropping teeth would damage the reeds??

..i didn't really hear the engine rev high..but i DO have the hissing noise that is coming from the carb....
..every mod (action) necessitates a (reaction) mod..

art

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Re: ..scoot shuts down..
« Reply #8 on: June 29, 2010, 11:06:20 PM »
Thats kinda wierd,Don't see how the two are related,but hay you wanted to look at those reeds any way  ;D performance wize i'd say dirty main,hissing wize reeds or worse.
Kymco peoples too many ;) I'm not an expert just a full time hobbiest.

wordslinger

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Re: ..scoot shuts down..
« Reply #9 on: June 29, 2010, 11:15:08 PM »
...the hissing actually becomes a "whistle" while riding...

..as cars go by, i can hear a distinctive high-pitched whistle rebounding back to me...
..every mod (action) necessitates a (reaction) mod..

wordslinger

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Re: ..scoot shuts down..
« Reply #10 on: June 29, 2010, 11:17:59 PM »
...and i can still hit over 50 mph, if i let it go...but i'm keeping it held back until i figure this out...

..it's just not the strong beastie it was before the old belt sh** th' bed...

..every mod (action) necessitates a (reaction) mod..

art

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Re: ..scoot shuts down..
« Reply #11 on: June 29, 2010, 11:22:33 PM »
Hmm.guessing at this point,but gets worse when under a load,maybe a toothe stuck in the clutch or bell or is it deffinetly the engine,check those reeds  ??? copression after that,reed stuck in cylinder  ???
Kymco peoples too many ;) I'm not an expert just a full time hobbiest.

wordslinger

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Re: ..scoot shuts down..
« Reply #12 on: June 29, 2010, 11:34:53 PM »
..imma get me a compression tester tomorrow...i need one for troubleshooting the a50 anyway...

..any specs on a tester that i need to be looking for??...thread size..connections, in general??
« Last Edit: June 29, 2010, 11:40:21 PM by wordslinger »
..every mod (action) necessitates a (reaction) mod..

art

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Re: ..scoot shuts down..
« Reply #13 on: June 29, 2010, 11:43:04 PM »
Bring a spark plug,pretty common size,you want 100+psi so i'm told I think 120 the magic#Did you read my post about the gates belt in your look out world! I think harbor freight has one withh the 3 sizes we lost them all! but there cheap.
« Last Edit: June 29, 2010, 11:46:27 PM by art »
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wordslinger

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Re: ..scoot shuts down..
« Reply #14 on: June 29, 2010, 11:50:24 PM »
..yeah, i thot of the spark plug right after i posted that...lol...

..i missed ur post on the othe rthread tho...

..imma try to find what i need local...i need it NOWWWW!!!!
..every mod (action) necessitates a (reaction) mod..

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