OP
@steelbytes avatar
UTC

Ossessionato
2019 GTS300 Supertech E3 55,000km
Joined: UTC
Posts: 4895
Location: Batmania aka Melbourne, Australia
 
Ossessionato
@steelbytes avatar
2019 GTS300 Supertech E3 55,000km
Joined: UTC
Posts: 4895
Location: Batmania aka Melbourne, Australia
UTC quote
Update: it's already not good My new throttle body doesn't rattle. UPDATED: dying 🤬🤬🤬 (Post 2653133)

Huh what?

History (this is number 3):

First
idle went to hell. rattles. shaft moves a bit in/out very distinct gap around butterfly

Second
Installation: idle perfect. don't know if rattled. no shaft movement. no gap around butterfly
Now: same as first. (bad idle, rattles, shaft moves, butterfly gap).

Third
same as second at installation (no rattle) and presumably same as first when brand new.


So why the post? I only noticed the rattle in 1st+2nd recently when reinspecting before ordering the 3rd.


Strong suspicion that the rattle is something on the end of the shaft that is hidden behind the ecu that broke / came off (eg a nut worked itself loose) and since the return spring on the shaft has a slight outward pressure* this led to the shafting pushing outwards so the butterfly rubs against the side of the barrel giving very visible wear / gap.

So why the rattle? Was there missing loctite on the nut on the hidden end of the shaft? was there a plastic thingy that cracked and broke in there? Was the 60C air temp reported by the ecu for long periods related to this failure?

So ... the new one is slightly different. Previous were both 32M4/B and this new one is 32M4/C which I interpret as a hardware revision. Definitely a different cast mould (see pic). Also this one came with a white silicon/rubber cover of the ecu (have seen this on pics of other peoples hpe). Might be more robust if I'm lucky.

I'm currently a bit scared to install the new until I mount a fan in the engine bay. I am also currently testing a crude bracket to keep inwards pressure on the shaft on the 2nd


* I know the spring has outward pressure as I dismantled this part of the first.
Forum member supplied image with no explanatory text
⚠️ Last edited by SteelBytes on UTC; edited 5 times
@touring300 avatar
UTC

Ossessionato
GTS 300ie Touring 2013 - Signora D'argento & GTS 300ie HPE 2022 - Regina Arancione.
Joined: UTC
Posts: 2087
Location: Lancaster, U.K.
 
Ossessionato
@touring300 avatar
GTS 300ie Touring 2013 - Signora D'argento & GTS 300ie HPE 2022 - Regina Arancione.
Joined: UTC
Posts: 2087
Location: Lancaster, U.K.
UTC quote
It's natural to assume that the 'C' varient is an upgrade on the 'B' version, that and given the later manufacturing date.
SteelBytes wrote:
I'm currently a bit scared to install the new until I mount a fan in the engine bay.
I've never heard of this modification before. Are you suggesting the failures of 1 & 2 are down to over-heating?
OP
@steelbytes avatar
UTC

Ossessionato
2019 GTS300 Supertech E3 55,000km
Joined: UTC
Posts: 4895
Location: Batmania aka Melbourne, Australia
 
Ossessionato
@steelbytes avatar
2019 GTS300 Supertech E3 55,000km
Joined: UTC
Posts: 4895
Location: Batmania aka Melbourne, Australia
UTC quote
Touring300 wrote:
Are you suggesting the failures of 1 & 2 are down to over-heating?
Maybe maybe. If the *air* temp reported is 60C then the temp in other parts of the ecu / throttle body that are more enclosed such as the location of where i think the rattle is could be even higher. Repeated expansion and contraction of parts in that area ...
@jakem avatar
UTC

Hooked
Vespa Sprint Sport S 125cc
Joined: UTC
Posts: 479
Location: Brighton, England
 
Hooked
@jakem avatar
Vespa Sprint Sport S 125cc
Joined: UTC
Posts: 479
Location: Brighton, England
UTC quote
Italy regularly sees 40c+ Summers, so I doubt they would of designed a product that struggles with heat.

Completely different setup, but my previous Elettrica had virtually no power in under 10c, but would unleash its full power non stop at 35c+, so the lithium battery insulation was clearly designed to cope with heat rather than the cold.

I would be more inclined to think it's dust / dirt particles getting through your air filter and wearing the internals.

What type of air filter are you running? Do you change it more often with your off-road riding?

What warranty do the parts have?
OP
@steelbytes avatar
UTC

Ossessionato
2019 GTS300 Supertech E3 55,000km
Joined: UTC
Posts: 4895
Location: Batmania aka Melbourne, Australia
 
Ossessionato
@steelbytes avatar
2019 GTS300 Supertech E3 55,000km
Joined: UTC
Posts: 4895
Location: Batmania aka Melbourne, Australia
UTC quote
JakeM wrote:
.
nah.

air temp: the air intake on australian bike is different to european and american. it has a long snorkle through the engine bay before entering the airbox unlike euro/usa where it's sucked directly into the airbox from near the cvt. the snorkle gets very hot and heats the air well before it has even reached the airbox. So don't compare the ambient air temp between when it's a differnt system. it's gonna be hotter in my scoot when in the same ambient temp.

trust piaggio design? Nah. the poorly designed start of the snorkel sucked part of it's air from the engine bay pulling in hot air and dust. I blocked the gaps with foam and now it doesn't (did this years ago). (plus shite load of other unrelated fails in the design of the bike)

dust: dust ain't gonna get into the enclosed area that is rattling so nope it won't have caused that fail. plus once I did the above mod it reduced the dust in the paper filter massively which I do change very frequently anyway (several thou kms)
⚠️ Last edited by SteelBytes on UTC; edited 1 time
OP
@steelbytes avatar
UTC

Ossessionato
2019 GTS300 Supertech E3 55,000km
Joined: UTC
Posts: 4895
Location: Batmania aka Melbourne, Australia
 
Ossessionato
@steelbytes avatar
2019 GTS300 Supertech E3 55,000km
Joined: UTC
Posts: 4895
Location: Batmania aka Melbourne, Australia
UTC quote
little extra: I'm thinking I might remove the ecu in my first unit (probably requiring whipping out the Dremel) so I can see the end of the shaft and the rattle. maybe. the act of doing so my make it not obvious which bit was f'd ... trying to predict before acting
OP
@steelbytes avatar
UTC

Ossessionato
2019 GTS300 Supertech E3 55,000km
Joined: UTC
Posts: 4895
Location: Batmania aka Melbourne, Australia
 
Ossessionato
@steelbytes avatar
2019 GTS300 Supertech E3 55,000km
Joined: UTC
Posts: 4895
Location: Batmania aka Melbourne, Australia
UTC quote
handy pic of the miug3 internals which I suspect will be same layout as the g4. note the g4 does not have that cover that appears to be removable instead that area is filed with black epoxy stuff

look at the green tps bit - that's where I suspect the rattle is (hard to tell exactly of course). This is the end of the shaft that is incorrectly moving. (and yes the tps is working). and what is that yellow pipe there?
Forum member supplied image with no explanatory text
@touring300 avatar
UTC

Ossessionato
GTS 300ie Touring 2013 - Signora D'argento & GTS 300ie HPE 2022 - Regina Arancione.
Joined: UTC
Posts: 2087
Location: Lancaster, U.K.
 
Ossessionato
@touring300 avatar
GTS 300ie Touring 2013 - Signora D'argento & GTS 300ie HPE 2022 - Regina Arancione.
Joined: UTC
Posts: 2087
Location: Lancaster, U.K.
UTC quote
SteelBytes wrote:
...and what is that yellow pipe there?
With a 90° bend on one end, it's probably to demonstrate that there's a passageway leading between the throttle body and the stepper motor, but why it's shown lying in this location on the diagram, I really don't know.
OP
@steelbytes avatar
UTC

Ossessionato
2019 GTS300 Supertech E3 55,000km
Joined: UTC
Posts: 4895
Location: Batmania aka Melbourne, Australia
 
Ossessionato
@steelbytes avatar
2019 GTS300 Supertech E3 55,000km
Joined: UTC
Posts: 4895
Location: Batmania aka Melbourne, Australia
UTC quote
Touring300 wrote:
I've never heard of this modification before.
Installing fans in GTS engine bay
OP
@steelbytes avatar
UTC

Ossessionato
2019 GTS300 Supertech E3 55,000km
Joined: UTC
Posts: 4895
Location: Batmania aka Melbourne, Australia
 
Ossessionato
@steelbytes avatar
2019 GTS300 Supertech E3 55,000km
Joined: UTC
Posts: 4895
Location: Batmania aka Melbourne, Australia
UTC quote
btw here's pics of the spring (removed from old throttle body) that show the springiness.

not crazy but it's enough that when you undo the nut the black pulley does push out
Forum member supplied image with no explanatory text
Forum member supplied image with no explanatory text
⬆️    About 3 months elapsed    ⬇️
OP
@steelbytes avatar
UTC

Ossessionato
2019 GTS300 Supertech E3 55,000km
Joined: UTC
Posts: 4895
Location: Batmania aka Melbourne, Australia
 
Ossessionato
@steelbytes avatar
2019 GTS300 Supertech E3 55,000km
Joined: UTC
Posts: 4895
Location: Batmania aka Melbourne, Australia
UTC quote
update:

🤬🤬🤬

1200km* and crap load of movement with flap open. none yet with it closed but it's only a matter of time 🤬

But no rattle?

* didn't get around to installing it until late october
⚠️ Last edited by SteelBytes on UTC; edited 2 times
@znomit avatar
UTC

Veni, Vidi, Posti
LX190 Friday afternoon special, Primavera, some pushbikes
Joined: UTC
Posts: 9876
Location: Hermit Kingdom
 
Veni, Vidi, Posti
@znomit avatar
LX190 Friday afternoon special, Primavera, some pushbikes
Joined: UTC
Posts: 9876
Location: Hermit Kingdom
UTC quote
It's obviously the vibrations from those fans you installed doing the damage. Maybe.
OP
@steelbytes avatar
UTC

Ossessionato
2019 GTS300 Supertech E3 55,000km
Joined: UTC
Posts: 4895
Location: Batmania aka Melbourne, Australia
 
Ossessionato
@steelbytes avatar
2019 GTS300 Supertech E3 55,000km
Joined: UTC
Posts: 4895
Location: Batmania aka Melbourne, Australia
UTC quote
znomit wrote:
It's obviously the vibrations from those fans you installed doing the damage. Maybe.
You don't think it's the multiple trees I had to wrestle last weekend?
OP
@steelbytes avatar
UTC

Ossessionato
2019 GTS300 Supertech E3 55,000km
Joined: UTC
Posts: 4895
Location: Batmania aka Melbourne, Australia
 
Ossessionato
@steelbytes avatar
2019 GTS300 Supertech E3 55,000km
Joined: UTC
Posts: 4895
Location: Batmania aka Melbourne, Australia
UTC quote
in this video you can see it move outwards as the butterfly is opened and then me pushing it back in again.

need to contrive a way to keep it in so it stops sliding on the side of the barrel which will over time result in gap like the previous two tb.

OP
@steelbytes avatar
UTC

Ossessionato
2019 GTS300 Supertech E3 55,000km
Joined: UTC
Posts: 4895
Location: Batmania aka Melbourne, Australia
 
Ossessionato
@steelbytes avatar
2019 GTS300 Supertech E3 55,000km
Joined: UTC
Posts: 4895
Location: Batmania aka Melbourne, Australia
UTC quote
And my crude "bracket" (bent bit of wire) that reduces the outwards movement.

"but that'll wear on the throttle cable". Cables are cheaper than throttle bodies.

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: 0.0358s ][ Queries: 7 (0.0076s) ][ Debug on ][ 309 ][ Thing One ]