Flat spot
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H,POOL GADGE
- Posts: 190
- Joined: Sat Mar 21, 2009 7:13 pm
- Main scooter: vespa polini220/gts 300
- Location: HARTLEPOOL
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03 Px200, standard/untouched. This flat spot thing! When riding along, shut throttle off and put throttle on again ye get that flat spot/hesitate before ye get power, tried always with jetting and it's still there! Yes ye could live with it, But!!! Could it be a case of spaco vs delortto carbs, are delortto carbs better??? Any ideas
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Shaunbond
- registered user
- Posts: 161
- Joined: Sun Feb 15, 2009 6:00 pm
- Location: Preston, Lancs
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Does it happen when shutting off from full throttle or any position? I used to get this from WOT on my HB stage 4 and heard a story about it being caused by not having the plastic droop tray fitted. I fitted one and it fixed the problem.
Serial scooter rider...
VMSC Committed to Scootering for 25 years
VMSC Committed to Scootering for 25 years
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H,POOL GADGE
- Posts: 190
- Joined: Sat Mar 21, 2009 7:13 pm
- Main scooter: vespa polini220/gts 300
- Location: HARTLEPOOL
- Contact:
that might have worked for you and good for you, But I think the drip tray things bollox, the scoots got one in!!!
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Jack221
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- Joined: Mon Jul 29, 2013 8:18 am
- Main scooter: PX221
- Location: London
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Flat spots like you describe are usually due to running weak at low revs. If it has all the right jets then air is getting in somewhere. Usual suspects are one of crank oil seals, carb/carb box gasket or base gasket.
Vespa est ieiunas, quia semper operaturi
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Shaunbond
- registered user
- Posts: 161
- Joined: Sun Feb 15, 2009 6:00 pm
- Location: Preston, Lancs
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OK, only trying to help!H,POOL GADGE wrote:that might have worked for you and good for you, But I think the drip tray things bollox, the scoots got one in!!!
Funny how it worked for me then when I didn't change anything else...Serial scooter rider...
VMSC Committed to Scootering for 25 years
VMSC Committed to Scootering for 25 years