losing performance at 150 km/h
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Member
piaggio mp3 500
Joined: 02 Apr 2021
Posts: 5

Tue Apr 20, 2021 4:26 am quote
Hi Guy's

My name is Roel from the Netherlands and I have a question.
When I drive my MP3 500 from 2014 on the Highway with full throttle, my engine stutters sometimes. It is like it doesn't get enough fuel or air or it's a misfire.

I replaced the battery, air filter, sparkplugs, oil, oil filter and cooling fluid.
Does anyone have an idea what the problem can be?

Cheers,
Roel
Hooked
2015 MP3 500 ie Business
Joined: 29 Oct 2019
Posts: 373
Location: Belgium
Tue Apr 20, 2021 7:22 am quote
Errr . . . you just might be hitting the rev limiter.

The MP3 500 has a top speed of around 145kph.
Hooked
2009 MP3 400, 2004 Honda ST1300
Joined: 11 Jun 2007
Posts: 330
Location: Sayre, PA
Tue Apr 20, 2021 8:54 am quote
Yes, watch the tachometer. I think the rev limiter on the 400 kicked in at 8000?
Ossessionato
Gilera Fuoco 500ie
Joined: 11 Oct 2009
Posts: 4269
Location: Netherlands Olst
Tue Apr 20, 2021 10:00 am quote
speedlimit is 160 or 8250 RPM

the wrong belt (size) and roller weights could also be a problem

But if you do that often it wont last a year and then you need a engine rebuild

some advertisment

Is de dealer te duur kom bij Maksor in de schuur

somewhat like the old red barn of OAD
Member
piaggio mp3 500
Joined: 02 Apr 2021
Posts: 5

Tue Apr 20, 2021 1:00 pm quote
Thx guys for your answer
It can be the rpm limit

When I call Maskor he doesn’t pick up the phone or calls back

Working on my vario and belt soon!
Veni, Vidi, Posti
Neutrino MP3 492.7 AK, 2013 Moto Guzzi Norge
Joined: 29 Mar 2008
Posts: 21794
Location: Harriman, Tennessee, Tn
Tue Apr 20, 2021 1:52 pm quote
Maksor wrote:
somewhat like the old red barn of OAD
just a FYI the old red barn is no more, I traded it in on a spot on the lake.
Hooked
2015 MP3 500 ie Business
Joined: 29 Oct 2019
Posts: 373
Location: Belgium
Wed Apr 21, 2021 3:13 am quote
Fyi re. top speed, keep in mind that the speedo gauge reads about 10% positive.

So if you see 165, your actual speed is about 150
Member
piaggio mp3 500
Joined: 02 Apr 2021
Posts: 5

Fri Apr 23, 2021 6:40 am quote
Thank you Niko for helping me with the vario. Added Dr Pully rolls and a new original Piaggio belt,
Now the speed is 155 at 7500 rpm without stuttering.
Enthusiast
2019 MP3 500 Sport
Joined: 26 Sep 2012
Posts: 60
Location: California
Tue Apr 27, 2021 12:19 pm quote
I am not sure how great it is for an engine to have the guts wrung out of it for very long highway spells? To me at least, the MP3 500 engine doesn't sound too happy at 90ish mph or 150ish kmh, speedometer inaccuracies included. How you get beyond that I wouldn't know, I think that's the max speed I have seen, and the bike wasn't happy, and if you hit a few highways bumps you won't, either...

I probably wouldn't use it to do the 350 miles from the Bay Area to Los Angeles on I5 (a boring, straight highway you can do 85mph on all day, but which is also hot as hell).
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