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Post by nsaints on Aug 23, 2017 11:26:03 GMT
That of course is another option However I enjoyed the challenge (LOL)
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Post by nsaints on Aug 23, 2017 6:54:07 GMT
OK, sounds similar to the wife's then try this.. you need to replace two o-rings within the oil pump, and replace the non return valve within the air box what I think is happening on yours is...Due to a weak/failed o-ring and/or a failing non-return valve, two stroke oil is siphoning into your crank case when the scoot is laid up. Once you have an amount of two stroke sat into your crankcase it makes starting a case of holding your finger on the starter button for a few to many seconds, and then lot's of white smoke on start whilst the two stroke in the crankcase clears the above doesn't happen if you try starting your scoot within a couple of hours as an excessive amount of 2 stroke oil hasn't weeped into the crankcase yet As I said the above is exactly what happened to the wife's P2..and taken quite sometime to find the answer Here's a link you should read with a more detailed explanation - I got all the parts from Scooter Centre, Koln. I guess other shop's sell the same modernvespa.com/forum/topic124633the oil non return valve part numbers are on the above link, and you need a Piaggio standard gasket set for the two o-rings, which also includes the gaskets for the carb, oil pump, and air box which need to come off..maybe a good idea to get a dellorto gasket set and service the carb while you're at it (assuming this hasn't been done for a while).. others have suggested buying a new airbox, which would achieve the same, but at a much higher cost ..I guess it all depends on how comfortable you are as a home mechanic lastly once all back together you'll need to run a tank of 2% premix until the oil pump is primed and starts working again message me if you need any more help
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Post by nsaints on Aug 14, 2017 15:46:49 GMT
Is the carb a standard oil injection, and if yes does it start with lots of white smoke but then clears after a minute or two
If the above is no then forget it. If yes, may have a possible answer, as this was a symptom of my P2 which looks to be cured now
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Post by nsaints on Aug 14, 2017 15:28:56 GMT
Both o-rings and non return valve replaced. Too early to tell if it's been a complete success 1st startup today after two days standing and there's definitely less white smoke Fingers crossed. if anyone is interested there's an in depth explanation on this link. The same may have been discussed within this forum, however I haven't found it. modernvespa.com/forum/topic124633Moderator, please delete if links to other forums are against site rules
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Post by nsaints on Jul 30, 2017 5:58:59 GMT
Thanks henri,
I've ordered the gaskets, but also the parts to replace the non return valve in the carb box. She does smoke very heavy on startup as well, more than normal The crank webs were covered in a lot of oil looking down the inlet port, and rotating the engine Possibility some oil is weeping past the non return valve when the engine is stationary
I'll fit the parts and report back
Edit: I've just read a thread on another forum about the metering devices o-rings. It's the lower o ring that seals the inlet and outlet port, and leakage past this o-ring is likely cause of white clouds of smoke upon startup, after the motor has been laid up for sometime. Anyhow all parts are ordered.
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Post by nsaints on Jul 29, 2017 14:22:23 GMT
Hi,
after having lived with oil pooling in the bottom of the carb box for sometime, replacing carb gaskets/lapping carb thinking that was the issue multiple times I think I have narrowed the issue down to a badly setup oil metering device or a worn seal within the oil circuit.
there's too much oil being delivered to the carb, as the filter is sodden in oil. Oil is dripping from the filter into the air box
I've had a a good look via Google and I can't find any guide to setting up the oil metering device, or pump. Can someone explain how it should be setup, or link me to a site.
Also does a standard P200 gasket set include all the gaskets and o rings for a oil metering device rebuild
thanks in advance
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