Tue May 18, 2021 4:52 am

Lurker
Mp3 400ie
Joined: 18 May 2021
Posts: 3
Location: England
 
Lurker
Mp3 400ie
Joined: 18 May 2021
Posts: 3
Location: England
Tue May 18, 2021 4:52 am linkquote
Hello
I've joined so I may get good info on my MP3 400ie I use it as a commuter
just over 600miles a week.

I had a few problems,

steering bearings
Lo displayed on clocks
front suspension

the standard oem bearing were crap replaced with KOYO cheaper and far far better quality first oem lasted 4 months ...Koyo still going

LO displayed is due to air temperature sensor being faulty works fine then
temp drops to -20 and then LO displayed mine is due to water once dry it's okay for a while so once I find it ....replace

the front hubs had a circlip and washer spacing , replace with a needle bearing and thrust washers and a longer needle roller in hub it fits and works well but had to space left caliper with thin washers 18mm long

front suspension causing faults hopefully sorted by bleeding and by pass seat sensor with a resistor the beeping was driving me nuts

and now it's spitting oil into airbox ...ffs

I'm a tech worked on Piaggio now Triumph
Tue May 18, 2021 8:00 am

Molto Verboso
Vespa ET3 & Vespa PX150 & Vespa GTS 300 & NIU NQi Sport
Joined: 05 Apr 2009
Posts: 1551
Location: Berlin
 
Molto Verboso
Vespa ET3 & Vespa PX150 & Vespa GTS 300 & NIU NQi Sport
Joined: 05 Apr 2009
Posts: 1551
Location: Berlin
Tue May 18, 2021 8:00 am linkquote
I guess if it were water, the clock would short out and not show anything at all. It's probably the voltage of the clock battery dropping below critical. Does it have the same button cell as the Vespa's clock has?
Tue May 18, 2021 8:18 am

Molto Verboso
GTS 300ie Touring, AKA Gigi
Joined: 26 Mar 2018
Posts: 1354
Location: Phoenix, AZ.
 
Molto Verboso
GTS 300ie Touring, AKA Gigi
Joined: 26 Mar 2018
Posts: 1354
Location: Phoenix, AZ.
Tue May 18, 2021 8:18 am linkquote
Welcome to MV, manicracing6!

I have no answers for you, but we love pictures. Post a few and the answers will come. I promise.
Tue May 18, 2021 8:27 am

Hooked
2009 MP3 400, 2004 Honda ST1300
Joined: 11 Jun 2007
Posts: 347
Location: Sayre, PA
 
Hooked
2009 MP3 400, 2004 Honda ST1300
Joined: 11 Jun 2007
Posts: 347
Location: Sayre, PA
Tue May 18, 2021 8:27 am linkquote
How many miles total?

There's a variety of ways to limit the oil in the airbox. I put an inverted "U" in my vent tube and that helps a lot so it drains back in to the crankcase.

Interested in what you did to the front hubs. Since the OEM setup is a bit under engineered for the applied stresses. Any pics of what you did?



Tue May 18, 2021 9:48 am

Veni, Vidi, Posti
In garage: Yamaha Tricity 155 Urban 2019 - MV Agusta 125 RS 1956
Joined: 21 Jul 2007
Posts: 6223
Location: Latina (Italy)
 
Veni, Vidi, Posti
In garage: Yamaha Tricity 155 Urban 2019 - MV Agusta 125 RS 1956
Joined: 21 Jul 2007
Posts: 6223
Location: Latina (Italy)
Tue May 18, 2021 9:48 am linkquote
You made a siphon.
Tue May 18, 2021 11:17 am

Moderaptor
The Hornet (GT200, aka Love Bug) and 'Dimples' - a GTS 300
Joined: 26 Aug 2007
Posts: 39681
Location: Pleasant Hill, CA
 
Moderaptor
The Hornet (GT200, aka Love Bug) and 'Dimples' - a GTS 300
Joined: 26 Aug 2007
Posts: 39681
Location: Pleasant Hill, CA
Tue May 18, 2021 11:17 am linkquote
Der Blechfahrer wrote:
I guess if it were water, the clock would short out and not show anything at all. It's probably the voltage of the clock battery dropping below critical. Does it have the same button cell as the Vespa's clock has?
Oliver, "Clocks" in UK English motorcycle speak means the dashboard - speedo, rev counter, anything else that displays there, not the time-telling clock per se.
So the 'LO' is, as above, just a faulty connection to the ambient temp sensor.
Tue May 18, 2021 10:11 pm

Molto Verboso
Vespa ET3 & Vespa PX150 & Vespa GTS 300 & NIU NQi Sport
Joined: 05 Apr 2009
Posts: 1551
Location: Berlin
 
Molto Verboso
Vespa ET3 & Vespa PX150 & Vespa GTS 300 & NIU NQi Sport
Joined: 05 Apr 2009
Posts: 1551
Location: Berlin
Tue May 18, 2021 10:11 pm linkquote
Thanks, Jim. That post is very hard to read for a non-native speaker.
Wed May 19, 2021 4:16 am

Lurker
Mp3 400ie
Joined: 18 May 2021
Posts: 3
Location: England
 
Lurker
Mp3 400ie
Joined: 18 May 2021
Posts: 3
Location: England
Wed May 19, 2021 4:16 am linkquote
I'll get some pictures and post asap of the thrust bearings etc

the display of LO on dashboard is a pain start bike it reads 10 deg then you watch it drop to - 10,11,12,etc the -20 and LO

the oil is spitting 500ml per 130 miles into catch tank I made not head gasket
as it starts and runs well no smoking,no coolant loss or mixed in oil

needle roller hk2020 instead of 2016

AXK Needle Roller Thrust Bearings C/W AS Washers 20 x 35 x 2





Wed May 19, 2021 7:52 am

Moderaptor
The Hornet (GT200, aka Love Bug) and 'Dimples' - a GTS 300
Joined: 26 Aug 2007
Posts: 39681
Location: Pleasant Hill, CA
 
Moderaptor
The Hornet (GT200, aka Love Bug) and 'Dimples' - a GTS 300
Joined: 26 Aug 2007
Posts: 39681
Location: Pleasant Hill, CA
Wed May 19, 2021 7:52 am linkquote
I'm going to move this to the MP3 section, as the Master engine experts huddle there.
Wed May 19, 2021 9:54 am

Ossessionato
Gilera Fuoco 500ie
Joined: 11 Oct 2009
Posts: 4277
Location: Netherlands Olst
 
Ossessionato
Gilera Fuoco 500ie
Joined: 11 Oct 2009
Posts: 4277
Location: Netherlands Olst
Wed May 19, 2021 9:54 am linkquote
pmatulew wrote:
How many miles total?

There's a variety of ways to limit the oil in the airbox. I put an inverted "U" in my vent tube and that helps a lot so it drains back in to the crankcase.

Interested in what you did to the front hubs. Since the OEM setup is a bit under engineered for the applied stresses. Any pics of what you did?
Just change the readvalve this hack will cost more eventualy a whole engine rebuild when the reedvalve is replaced and you got still oil in the airfilter change the pistonrings and more

when the reedvalve goes the piston rings will snap with time

or When there is a broken piston ring the reed valve will go due to more pressure
Tue Jun 08, 2021 5:02 am

Lurker
Mp3 400ie
Joined: 18 May 2021
Posts: 3
Location: England
 
Lurker
Mp3 400ie
Joined: 18 May 2021
Posts: 3
Location: England
Tue Jun 08, 2021 5:02 am linkquote
2 questions...today

1 where is the reed valve on this model
2 where is the air temp sensor


please any help would be good

I'm getting a joke book so I won't be asking stupid questions later

I've sorted some of the oil problems fitted a catch tank with two pipes coming off engine 1 from breather and second from timing mark (torq bolt by water pump)
Tue Jun 08, 2021 6:53 am

Hooked
2015 MP3 500 ie Business
Joined: 29 Oct 2019
Posts: 398
Location: Belgium
 
Hooked
2015 MP3 500 ie Business
Joined: 29 Oct 2019
Posts: 398
Location: Belgium
Tue Jun 08, 2021 6:53 am linkquote
Air temp sensor is located on the handle bar housing. Reed valve is located inside the engine block.
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