Modern Vespa

Incorrectly stated as incorrect. As I said, once the air filter gets blocked by oil, ....
Screw it, I'm going to b....

Chill guys.... I'll let you know what the shop say when they call me, okay.

They are claiming that the pnydrv mod is causing the oil leak.

No not with a cylinder change but i replace them when i see oil blowby that will fix that problem

Good Grief...
I wonder if they will complain about LeoVince or Akra pipe too?

If this is your only dealer, I would almost be inclined to get it fixed, and sell it.
Go with a Burghman or Silverwing.

or...

Get yourself a Clean Used MP3/250 with the Quasar Engine...
No Oil Blow here...
I love mine for around town, but I did use it for Amerivespa this year...
Over 3000 miles that week, no oil in the Air Filter.

"It's a Collector..."

Keith

I really wonder about that "Full Line".
The reason saying, I know I am repeating myself from other posts.

When the Dealer was unloading 4 New 2016 MP3/500 ABS.
I was there to see my bike, I checked 3 of the bikes for Oil levels, all of them were just a mm above the Low Mark. So Piaggio knows there is an issue at the Factory.

Not until the Dealer changes the oil, and fills it based on the Manual to the Full Mark, the customers return with oil in the Bubble...
This triggers a reaction to anyone who is not familiar with the history of that engine.

So far so good for me... my 1400cc of Oil is holding its place on my dipstick.
My Air filter has a Shiny inside, but no oil collecting.
I ride the Speed Limit on the interstate highways, 55/65/75 MPH and a little more.


Keith,
Marietta, GA

Just a brief point about the bigger displacement engine. I assume that the crankcase volume is about the same across the whole range so bigger displacement also means higher crankcase compression even if there is no specific issue with piston or rings on the larger bore sizes. Its also possible that a bigger crank throw churns up the oil more if the level is a bit high.

Before catalytic converters high oil levels would produce very obvious exhaust smoke but now the exhaust temperatures are so high the oil is burned and you don't see it.

You make a good point, since the problem looks to be rare on the MP3/400, only the MP3/500's.

Keith
Marietta, GA

The chance of the oil getting into the intake are pretty slim - that's why it collects in the front tube and the air box. They baffle it and restrict the flow at that point. The volume is also restricted at the flapper valve at the breather tube. My personal opinion is that the breather should be connected to the valve cover. That's how the pressure should be equalized with the crankcase. You can calculate the volume being displaced and it's not trivial. Like I said - I measured north of 20 psi in the breather tube.