Author Topic: Low power on acceleration then lurches, reduced power overall  (Read 5352 times)

Crispin

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Hi, if anyone can help with this would be so grateful as I use my scooter everyday for commuting to work and Can't bear Londn underground anymore...

My sunset/202 classic cut out after going full throttle for a mile 3 times in 3 months, each time it would start again fine. Then it cut out and wouldn't restart, leaving me stranded. I got it home eventually after a really nice eygptian lad helped me in Battersea, I changed the fuel filter and cleaned the carb and jets (there was a deposit in one of them).

It now goes again but since the mend has no power on initial (gentle) twist of throttle then lurches a bit and eventually does build speed but it takes much longer and doesn't reach max speed anymore.

I should mention that there's some air in the fuel filter.

Does anyone please know what the problem is?

Thanks, Crips

harry

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Re: Low power on acceleration then lurches, reduced power overall
« Reply #1 on: June 09, 2012, 01:24:21 PM »
since you just cleaned the carb..
did you set the air screw back to stock settings?
 3/4 turn out
water in the fuel can be the cause of low power
use some gas line dryer  ..
 bad plug or cap can be a issue .

 how it die's  is a clue , if it acts like its running out of gas
sputters and die's its fuel related
if it just quits abruptly no sputter its usually electrical

oilyhans
i own a scooter shop  with rentals ,sales& racing parts.
i also appraise scooters for KBB.

2003 Vino classic stage 0.75
de-reged stock variator w/8g sliding weights.
1.5k rpm  springs
42mph
2005 veniceLX ~70cc~upjet~1.5k rpm springs & 7gr sliders
46mph
KeyWest de restricted~8gr slide

Crispin

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Re: Low power on acceleration then lurches, reduced power overall
« Reply #2 on: June 10, 2012, 06:36:36 AM »
Hi hans - thanks so munch for your answer. Gave the airscrew a half turn and is running I've clockwork..! Now g otta work out why the fuel gauge isn't working..!

Take it easy.

Crips

harry

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Re: Low power on acceleration then lurches, reduced power overall
« Reply #3 on: June 10, 2012, 07:32:18 PM »
check both the gauge and sensor ;
 plugged in to the connectors good
 you can check the sensor  disconnect it, put a multimeter
<continuity> on the ends and lift the float with  a clean wire.
check the ground to gauge is good .

oilyhans
i own a scooter shop  with rentals ,sales& racing parts.
i also appraise scooters for KBB.

2003 Vino classic stage 0.75
de-reged stock variator w/8g sliding weights.
1.5k rpm  springs
42mph
2005 veniceLX ~70cc~upjet~1.5k rpm springs & 7gr sliders
46mph
KeyWest de restricted~8gr slide

Crispin

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Re: Low power on acceleration then lurches, reduced power overall
« Reply #4 on: July 03, 2012, 11:47:00 AM »
Thanks Hans - will check this out and report back - sorry for delay in reply, didn't see your answer till now.

Thanks again,

Crips