OP
@rossodragongts avatar
UTC

Member
2013 GTS300ie Super
Joined: UTC
Posts: 35
Location: Broken Arrow, OK
 
Member
@rossodragongts avatar
2013 GTS300ie Super
Joined: UTC
Posts: 35
Location: Broken Arrow, OK
UTC quote
Hello, Started my 2013 GTS300ie Super up the other day, after a few minutes, noticed a plume of white smoke coming up from under the right side of the engine, no oil, rubber, or plastic smell. At first look, couldn't find anything. Started up this morning with the underseat tub out, flashlight in hand, and determined that the smoke was coming off of the Lamda Sensor. The sensor and the whole area around it are all clean and dry, no oils or anything. Curious if anyone else has had this issue? Also curious about checking the sensor with a multimeter, resistance test maybe, but don't know what the ohm value should be. Any knowledge you may share is appreciated, thank you.
@jimc avatar
UTC

Moderaptor
The Hornet (GT200, aka Love Bug) and 'Dimples' - a GTS 300
Joined: UTC
Posts: 43907
Location: Pleasant Hill, CA
 
Moderaptor
@jimc avatar
The Hornet (GT200, aka Love Bug) and 'Dimples' - a GTS 300
Joined: UTC
Posts: 43907
Location: Pleasant Hill, CA
UTC quote
Oh dear... The lambda sensor provides a voltage (normally between 0.2V and 0.8V for lean and rich respectively) and you can't test it directly by measuring its resistance. Also the input to the ECU should be high resistance. So either the ECU has a major fault (unlikely) or the wires to the sensor have somehow been shorted to somewhere they shouldn't. I've heard of that before, but not of the sensor actually smoking.
OP
@rossodragongts avatar
UTC

Member
2013 GTS300ie Super
Joined: UTC
Posts: 35
Location: Broken Arrow, OK
 
Member
@rossodragongts avatar
2013 GTS300ie Super
Joined: UTC
Posts: 35
Location: Broken Arrow, OK
UTC quote
Thank you for the reply!
@waspmike avatar
UTC

Ossessionato
LXV 150 3v ie. Midnight Blue (Sold) Now Honda Zoomer X
Joined: UTC
Posts: 4129
Location: Kingdom of Lanna
 
Ossessionato
@waspmike avatar
LXV 150 3v ie. Midnight Blue (Sold) Now Honda Zoomer X
Joined: UTC
Posts: 4129
Location: Kingdom of Lanna
UTC quote
There's nothing in the construction of an OE oxygen sensor that can produce smoke.

Therefore something has contaminated it. Roadwater [white steam] coolant [white smoke] or oil [blue-white smoke.]
@steelbytes avatar
UTC

Veni, Vidi, Posti
2019 GTS300 Supertech E3 60,000km
Joined: UTC
Posts: 5720
Location: Batmania aka Melbourne, Australia
 
Veni, Vidi, Posti
@steelbytes avatar
2019 GTS300 Supertech E3 60,000km
Joined: UTC
Posts: 5720
Location: Batmania aka Melbourne, Australia
UTC quote
I also suspect some contamination of the lambda (which may just burn off causing no harm)

do you get a check engine light on your dash?
OP
@rossodragongts avatar
UTC

Member
2013 GTS300ie Super
Joined: UTC
Posts: 35
Location: Broken Arrow, OK
 
Member
@rossodragongts avatar
2013 GTS300ie Super
Joined: UTC
Posts: 35
Location: Broken Arrow, OK
UTC quote
SteelBytes wrote:
I also suspect some contamination of the lambda (which may just burn off causing no harm)

do you get a check engine light on your dash?
Check engine light goes off when the engine starts.
OP
@rossodragongts avatar
UTC

Member
2013 GTS300ie Super
Joined: UTC
Posts: 35
Location: Broken Arrow, OK
 
Member
@rossodragongts avatar
2013 GTS300ie Super
Joined: UTC
Posts: 35
Location: Broken Arrow, OK
UTC quote
waspmike wrote:
There's nothing in the construction of an OE oxygen sensor that can produce smoke.

Therefore something has contaminated it. Roadwater [white steam] coolant [white smoke] or oil [blue-white smoke.]
Smoke is white, might just try riding a few miles around the neighborhood to see if it stops smoking.
@greasy125 avatar
UTC

Sergeant at Arms
Weird 80's Vespas & Cool Vintage Lambrettas
Joined: UTC
Posts: 14965
Location: The state of insanity, SoCal
 
Sergeant at Arms
@greasy125 avatar
Weird 80's Vespas & Cool Vintage Lambrettas
Joined: UTC
Posts: 14965
Location: The state of insanity, SoCal
UTC quote
is it possible you have a little teeny tiny coolant leak? the lambda and headpipe would be right in the direct path there...
OP
@rossodragongts avatar
UTC

Member
2013 GTS300ie Super
Joined: UTC
Posts: 35
Location: Broken Arrow, OK
 
Member
@rossodragongts avatar
2013 GTS300ie Super
Joined: UTC
Posts: 35
Location: Broken Arrow, OK
UTC quote
greasy125 wrote:
is it possible you have a little teeny tiny coolant leak? the lambda and headpipe would be right in the direct path there...
I looked, and felt the sensor, the exhaust, the wires out of the sensor, and was observing it right after starting the engine. No coolant, oil, or anything on or near the area.
OP
@rossodragongts avatar
UTC

Member
2013 GTS300ie Super
Joined: UTC
Posts: 35
Location: Broken Arrow, OK
 
Member
@rossodragongts avatar
2013 GTS300ie Super
Joined: UTC
Posts: 35
Location: Broken Arrow, OK
UTC quote
Well, went for a two or three mile ride, all cleared up!!
DoubleGood Design banner

Modern Vespa is the premier site for modern Vespa and Piaggio scooters. Vespa GTS300, GTS250, GTV, GT200, LX150, LXS, ET4, ET2, MP3, Fuoco, Elettrica and more.

Buy Me A Coffee
 

Shop on Amazon with Modern Vespa

Modern Vespa is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.com


All Content Copyright 2005-2024 by Modern Vespa.
All Rights Reserved.


[ Time: 0.0110s ][ Queries: 3 (0.0027s) ][ live ][ 313 ][ ThingOne ]