poorly engine

[jonisingt35r]

hi got a very poorly engine, px 200, went for a run yesterday it kept stopping suddenly then after a while it would start again, thought it was a fuel problem it just kept stopping starting then finally it stopped and it feels like no compression at all when you kick it over so I'm thinking new barrel and piston? or could it ba anything else baring in mind there is zero compression
where do I start?
thank you

[djloone]

could be a ring gone?...when you kick it over are any gasses escaping from the head? ( mine did the same when i stripped a barrel stud..loss of compression and oomph)

LOON-E

[pxguru]

Agree, will need new rings at least. If the bore is really worn, then it will need a re-bore. The original 200 pistons are not that good and this is usual as they wear, if you want it to go a bit better then buy one of these. If not so worn bore and you have 90 quid you're dying to spend then the standard GS piston will be better.

Not worn bore 66.5mm
www.sip-scootershop.com/en/products/piston+grandsport+200cc+_12090000
1st oversize re-bore 66.7mm
www.sip-scootershop.com/en/products/~/products/piston+grandsport+200cc+_12091000

[henri]

as pxguru says , but rather than sip ,who i'm not happy with ,£30 min order ,robbin kraut gits , grand-sport.de , order from the organ grinder not the monkey .H

[sime66]

Have you seen the postage to non-EU destinations, H? That'll proper give you something to moan about (ScooterCentre; can't find SIP quickly):

www.scooter-center.com/en/help/delivery_outside_eu

(sorry to but-in jonisingt35r, but you've got the A Team on your case, so my little interruption won't hurt)

[jonisingt35r]

had a quick look not had the head off yet found some metal inside the carb looks like its gone up the carb