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@sc5 avatar
UTC

Member
Vespa 300ie, 250ie, p200, MP3 500, and more
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Location: Texas
 
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@sc5 avatar
Vespa 300ie, 250ie, p200, MP3 500, and more
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Location: Texas
UTC quote
Hi all, newly registered but follower of the site.

Hope to get some insights here on my new journey owning a 2009 MP3 500.
I own 5 Vespas, and got hold of an MP3 500 and find it fascinating.
Needed work but I got it running and cant wait to get it solid and good to go.

Here is my problem - which i hope can be resolved without major engine work:

Oil/white smoke coming from where the exhaust pipe meets/joins the muffler. Not coming from outside the leo muffler thats attached, just at the joining area.

Happens after a short ride but its significant and happens each time.

What ive done so far:
Changed oil, and filter.
- correct amount and was doing the smoke before anyway.
Brand new battery, fully charged and works great
Bled Brakes and they are working great now.

Just cant figure out why the smoke at that joint area where the Leo meets the pipe.

Any ideas? and thanks for letting me be part of the forum.
UTC

Molto Verboso
2015 MP3 500 ie Business
Joined: UTC
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Location: Belgium
 
Molto Verboso
2015 MP3 500 ie Business
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Posts: 1574
Location: Belgium
UTC quote
Does the coolant level drop over time?
@veloce_vulture avatar
UTC

Banned
1957 NSU Prima III
Joined: UTC
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Location: House Arrest
 
Banned
@veloce_vulture avatar
1957 NSU Prima III
Joined: UTC
Posts: 945
Location: House Arrest
UTC quote
Sounds like some oil inside the exhaust, probably haven't ridden it too far yet. What did the old plug look like?
@steelbytes avatar
UTC

Veni, Vidi, Posti
2019 GTS 300 HPE w Malossi cylinder kit etc
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Location: Batmania aka Melbourne, Aus
 
Veni, Vidi, Posti
@steelbytes avatar
2019 GTS 300 HPE w Malossi cylinder kit etc
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Location: Batmania aka Melbourne, Aus
UTC quote
Did you use anti sieze on the manifold - Leo join? That'll smoke for a short time.

Otherwise my first thought was coolant leaking. Maybe from a clamp above and dripping on to the exhaust or less pleasant thought leaking from the heads gasket and trickling down the inside of the exhaust (this happen with my gts).

What smell does the smoke have? Coolant is slightly sweet usually
OP
@sc5 avatar
UTC

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Vespa 300ie, 250ie, p200, MP3 500, and more
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Location: Texas
 
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@sc5 avatar
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UTC quote
Thanks.

It smells like oil. Not sweet coolant. And white smoke. Dont see anything dripping on it. And only seems to come up after a short ride
@veloce_vulture avatar
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Banned
1957 NSU Prima III
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Location: House Arrest
 
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@veloce_vulture avatar
1957 NSU Prima III
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UTC quote
Oil present at exhaust pipe connection and that oil burns to make smoke, residual from spill, or leak.
No smoke out of actual tail pipe. Everything else checks out okay.
That's what I read.
@old_as_dirt avatar
UTC

Veni, Vidi, Posti
2007 GTS
Joined: UTC
Posts: 23203
Location: Harriman, Tennessee, Tn
 
Veni, Vidi, Posti
@old_as_dirt avatar
2007 GTS
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Posts: 23203
Location: Harriman, Tennessee, Tn
UTC quote
short rides are the WORST for engines. need to ensure you do at least 10 miles to fully get the engine to good temp and the cat on the exhaust to good temp.
@jimc avatar
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The Hornet (GT200, aka Love Bug) and 'Dimples' - a GTS 300
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@jimc avatar
The Hornet (GT200, aka Love Bug) and 'Dimples' - a GTS 300
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Location: Pleasant Hill, CA
UTC quote
SC5 wrote:
It smells like oil. Not sweet coolant. And white smoke. Dont see anything dripping on it. And only seems to come up after a short ride
So not after a longer ride? And a slip-on exhaust?
UTC

Enthusiast
mp3 500
Joined: UTC
Posts: 64
Location: usa
 
Enthusiast
mp3 500
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Location: usa
UTC quote
condensation in muffler?
@jimc avatar
UTC

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The Hornet (GT200, aka Love Bug) and 'Dimples' - a GTS 300
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The Hornet (GT200, aka Love Bug) and 'Dimples' - a GTS 300
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UTC quote
scottk wrote:
condensation in muffler?
Certainly my first thought.
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@sc5 avatar
UTC

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Vespa 300ie, 250ie, p200, MP3 500, and more
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@sc5 avatar
Vespa 300ie, 250ie, p200, MP3 500, and more
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Location: Texas
UTC quote
Thanks for the replies!
Longer ride and images after seems like a good thing to add to the post (duh).
im going to give it a longer ride. and post up pics of what I am trying to solve.

This MP3 thing is freaking cool.
I want to get it solid working, and get myself in sync with it so i can ride it all over the place in TX.

Thanks in advance for any and all help.
Pics coming soon.
OP
@sc5 avatar
UTC

Member
Vespa 300ie, 250ie, p200, MP3 500, and more
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Vespa 300ie, 250ie, p200, MP3 500, and more
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Posts: 5
Location: Texas
UTC quote
jimc wrote:
Certainly my first thought.
maybe, but this smells a lot like burning oil and not water.
OP
@sc5 avatar
UTC

Member
Vespa 300ie, 250ie, p200, MP3 500, and more
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Posts: 5
Location: Texas
 
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@sc5 avatar
Vespa 300ie, 250ie, p200, MP3 500, and more
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Posts: 5
Location: Texas
UTC quote
jimc wrote:
So not after a longer ride? And a slip-on exhaust?
yes its a slip on exhaust (leovince) and where they attach is where the smoke is coming from
@jimc avatar
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The Hornet (GT200, aka Love Bug) and 'Dimples' - a GTS 300
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@jimc avatar
The Hornet (GT200, aka Love Bug) and 'Dimples' - a GTS 300
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Location: Pleasant Hill, CA
UTC quote
And not after a longer ride?

Plus, any condensation in there will be pretty filthy and foul before getting all steamed up - so I'd expect it to smell. This isn't quite the same as the condensation that steams off from the exhaust outlet on occasion.
@jah avatar
UTC

Hooked
Piaggio MP3 250'2007
Joined: UTC
Posts: 489
Location: Chelyabinsk, Russia
 
Hooked
@jah avatar
Piaggio MP3 250'2007
Joined: UTC
Posts: 489
Location: Chelyabinsk, Russia
UTC quote
SteelBytes wrote:
Coolant is slightly sweet usually
Or could be described as "someone is using a vape nearby"

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