All I did was change the battery!!!
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Hooked
2013 BV350/2009 MP3 250
Joined: 24 Jul 2011
Posts: 366
Location: Sacramento, California
Sat Feb 08, 2020 7:15 am quote
I changed the battery on a 2009 MP3 250. With the scooter on the stand, I started it up. The bike ran roughly and would die if I tried to rev the throttle.

I checked the plug and wire; they were okay. I inserted the brown key as per the owner's manual; there was no change.

Flustered, I took it off the stand and rolled it back on the driveway. It still idled roughly, yet when I gave it some gas, it moved forward.

What is going on? I thought about a test run, but I'm nervous about it breaking down on the road.

Any ideas, dear friends?

Mark
Veni, Vidi, Posti
Neutrino MP3 492.7 AK, 2013 Moto Guzzi Norge
Joined: 29 Mar 2008
Posts: 21681
Location: Harriman, Tennessee, Tn
Sat Feb 08, 2020 8:45 am quote
how long has it been sitting since last started?
Hooked
2015 MP3 500 ie Business
Joined: 29 Oct 2019
Posts: 262
Location: Belgium
Sat Feb 08, 2020 10:19 am quote
Tell us more about the battery.

Is it brand new, brand, size, what type is it (EFB, AGM, conventional), etc.

And did you you allow the battery to sit for at least 1 hour after adding the acid pack, followed by giving it a overnight charge (10+ hours) at 1Amp charge rate???

The battery takes a significant hit in service life if you don't follow the procedure above prior to cranking for the first time.

Also, electronics don't act nice if the battery is not up to snuff and fully charged.

FWIW, I've tried many brands but Yuasa makes the best and longest lasting motorcycle batteries.
Hooked
2013 BV350/2009 MP3 250
Joined: 24 Jul 2011
Posts: 366
Location: Sacramento, California
Sat Feb 08, 2020 10:39 am quote
It set for about a week. I am a religious seafoam additive user, so I don't think it is a fuel issue.
Also, Yuasa ytx14-BS via batteries Plus, let set for 24 hours, was the replacement.

Hey there Old as dirt, How ya doin'?

Mark.
Veni, Vidi, Posti
Neutrino MP3 492.7 AK, 2013 Moto Guzzi Norge
Joined: 29 Mar 2008
Posts: 21681
Location: Harriman, Tennessee, Tn
Sat Feb 08, 2020 6:42 pm quote
take off the air filter and clean the throttle body with throttle body cleaner, you probably got a port clogged.
Ossessionato
2016 MP3/500 Sport ABS, 2009 MP3/250, 2012 GTS Super 300ie
Joined: 08 Jul 2011
Posts: 4295
Location: Marietta, GA
Sun Feb 09, 2020 3:39 am quote
Understanding you checked the plug, I would install a new one after you do what OAD says above.

How's the fuel?

I have one of these Fluid Extractors, cheap on Amazon.
I would suck out all the gas, and put some fresh Non-Ethanol 90, or Premium Fuel, if its been sitting for a few months.

I have had some strange experiences with mine when the battery is going bad, that's why I always keep a spare ready for a swap, but not after replacing with a new one.

Keith,
Marietta, GA
Veni, Vidi, Posti
GTS 300ABS, Buddy 125, Buddy Kick 125
Joined: 29 Dec 2007
Posts: 11496
Location: Oregon City, OR
Sun Feb 09, 2020 9:22 am quote
Mr. F wrote:
Also, Yuasa ytx14-BS via batteries Plus, let set for 24 hours, was the replacement.
Isn't that a gel battery?
Hooked
2009 250
Joined: 13 Oct 2019
Posts: 155
Location: Canada
Sun Feb 09, 2020 12:35 pm quote
Dooglas wrote:
Mr. F wrote:
Also, Yuasa ytx14-BS via batteries Plus, let set for 24 hours, was the replacement.
Isn't that a gel battery?
AGM
Hooked
2015 MP3 500 ie Business
Joined: 29 Oct 2019
Posts: 262
Location: Belgium
Sun Feb 09, 2020 12:47 pm quote
Still waiting on more info from OP if he charged the battery overnight (+-10hrs @ 1Amp) before putting battery in use.

Out of the box the batteries are dry charged, but not fully charged hence needing to charge them fully before installation into the bike. Also, always put the bike on a smart charge (like a Optimate 4) whenever the bike is going to sit for more than a few days.

I have a Yuasa AGM that is pushing 17 years (yes seventeen) using this method vs. some generic batteries that barely last a couple of years using the fill and go method.
Enthusiast
2016 MP3 500 Sport
Joined: 30 Sep 2014
Posts: 94
Location: Chandler, AZ
Sun Feb 09, 2020 5:00 pm quote
Seat Switch?
I apologize in advance if I missed the idea in an earlier post, but it could be the seat safety switch. It will not let the engine run correctly if it it doesn't detect a rider or is damaged.
Veni, Vidi, Posti
Neutrino MP3 492.7 AK, 2013 Moto Guzzi Norge
Joined: 29 Mar 2008
Posts: 21681
Location: Harriman, Tennessee, Tn
Mon Feb 10, 2020 5:27 am quote
Steve just came up with the solution to the op's problem

Mr F put the scoot back on center stand, start, double click the tilt lock OFF then you can rev the engine.
Hooked
2013 BV350/2009 MP3 250
Joined: 24 Jul 2011
Posts: 366
Location: Sacramento, California
Wed Feb 12, 2020 1:30 pm quote
Hello Steve and Old As Dirt,

That did it!

I also did charge the battery; merci'

Man oh man, do I like this site! I'll be changing the oil, belt and rollers soon - just like a GTS 250, right? From what I see, it will be easier than my GT 200 from way back when.

Thanks again everyone,
Mark
Cross Egypt Challenge - A 2400km ride throughout Egypt   Vespa Wasp Pin Badges   AF1 Racing Vespa Austin
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