Engine seemed seized

steezertotter · September 8th, 2016, 11:49 AM

I'm working on a 2004 250 and when I went to start it this morning, as I hit the starter motor there was a loud clunk and it wouldn't turn. It sounded like it was getting a half rotation then hitting some resistance and stopping. I tried it in neutral, first gear, clutch in, clutch out. Nothing. I got on the bike and took it off the center stand and it started right up. I checked the oil it's got plenty and it was changed last week. An clue what could have caused this?

Thanks

jkv45 · September 8th, 2016, 12:31 PM

Quote:

Originally Posted by steezertotter

I'm working on a 2004 250 and when I went to start it this morning, as I hit the starter motor there was a loud clunk and it wouldn't turn. It sounded like it was getting a half rotation then hitting some resistance and stopping. I tried it in neutral, first gear, clutch in, clutch out. Nothing. I got on the bike and took it off the center stand and it started right up. I checked the oil it's got plenty and it was changed last week. An clue what could have caused this?

Thanks

Not following - does it start up fine off the stand?

RacinNinja · September 8th, 2016, 12:38 PM

I don't suppose you've pulled the seat and checked the battery? If it's an aftermarket or taller than stock, sitting on the seat may have pressed on a terminal, fixing a crappy connection?

Otherwise, there is nothing else I can think of involving a centerstand and a no-start scenario.

steezertotter · September 8th, 2016, 01:07 PM

It starts off the center stand.

I could hear the motor pushing even when it was not moving but I'll check for an electrical issue.

The problem now seems like it resolved it self because it will start now I'm any position but I'm waiting to see if it's recurring

csmith12 · September 8th, 2016, 01:39 PM

I would suspect battery more than anything else. Sounds like you have a cell shorting out. On the stand the acid is at a level, off the stand it's at another level.

Triple Jim · September 8th, 2016, 01:46 PM

Quote:

Originally Posted by steezertotter

The problem now seems like it resolved it self because it will start now I'm any position but I'm waiting to see if it's recurring

You hope it recurs, because otherwise it's lulling you into a false sense of security until your next really long ride when you're 200 miles from home at the bottom of a hill, and it's about to start raining.

JohnnyBravo · September 8th, 2016, 02:58 PM

It's best to figure out the problem and fix it tbh

Motofool · September 8th, 2016, 05:10 PM

Quote:

Originally Posted by steezertotter

.........An clue what could have caused this?

Thanks

Hopefully, it is not the reason in your case, but check this thread out:

http://www.ninjette.org/forums/showt...starter+clutch

Ghostt · September 8th, 2016, 11:27 PM

It could be hydrolocked.

Thus happens when the carburetor float valve sticks, and/or petcock malfunction, this allows fuel to fill the cylinder.

Remove the spark plugs and crank the engine, if it is hydrolocked, fuel will shoot out the spark plug hole.

To fix this verify the petcock is operating properly, and check the float needle valves for wear, if in doubt replace, and adjustment of the floats,

If no inline fuel filter is present, install one.

jkv45 · September 9th, 2016, 08:10 AM

I was thinking possible hydrolock as well, or maybe a battery that is on the edge.

Has the oil level risen at any time?

I would get a volt meter and check the battery voltage. You should get 12.7V (100% charged) before cranking. Also test it when you hit the button - you should still be in the 10V range. If it drops off more than that the battery is bad.

Also check all of the connections if the battery checks out fine.

September 8th, 2016, 11:49 AM	#1
steezertotter ninjette.org newbie Name: Ben Location: Denver Join Date: Aug 2016 Motorcycle(s): 2004 EX250-F Posts: 2	Engine seemed seized I'm working on a 2004 250 and when I went to start it this morning, as I hit the starter motor there was a loud clunk and it wouldn't turn. It sounded like it was getting a half rotation then hitting some resistance and stopping. I tried it in neutral, first gear, clutch in, clutch out. Nothing. I got on the bike and took it off the center stand and it started right up. I checked the oil it's got plenty and it was changed last week. An clue what could have caused this? Thanks

September 8th, 2016, 12:38 PM	#3
RacinNinja Vintage Screwball Name: B Location: Washington Join Date: Feb 2016 Motorcycle(s): 2011 Ninja 250, 2008 Ninja 250, 2019 KTM 1290SDR, 2017 FZ10 Posts: A lot. MOTM - Mar '16	I don't suppose you've pulled the seat and checked the battery? If it's an aftermarket or taller than stock, sitting on the seat may have pressed on a terminal, fixing a crappy connection? Otherwise, there is nothing else I can think of involving a centerstand and a no-start scenario. __________________________________________________ Goin' fast on slow bikes!
	1 out of 1 members found this post helpful.

September 8th, 2016, 01:39 PM	#5
csmith12 The Corner Whisperer Name: Chris (aka Reactor) Location: Northern KY Join Date: May 2011 Motorcycle(s): 2010 250 (track), 1992 250, 2006 R6 (street/track), 2008 R6 (track) Posts: Too much. MOTY 2015, MOTM - Nov '12, Nov '13	I would suspect battery more than anything else. Sounds like you have a cell shorting out. On the stand the acid is at a level, off the stand it's at another level. __________________________________________________ Goal: Shake A Million Hands \| Look through the corners \| Track Day Prep \| Closest track? \| The Mid-Ohio School
	1 out of 1 members found this post helpful.

September 8th, 2016, 02:58 PM	#7
JohnnyBravo Certifiable nontundrum Name: Harper Location: NC Milkshake stand Join Date: Mar 2013 Motorcycle(s): 2013 SE NINJA 300 Posts: Too much. MOTM - Sep '13, Sep '16	It's best to figure out the problem and fix it tbh __________________________________________________

September 8th, 2016, 11:27 PM	#9
Ghostt in your machine Name: Scott Location: Summer Shade, Ky. Join Date: Oct 2014 Motorcycle(s): 98 Ninja 250/F12 aka ZX-2R "SERENITY", 91 Ninja 500/A5 aka ZX-5R "Phoenix", 84 Honda GL1200A "SIREN" Posts: A lot. Blog Entries: 25 MOTM - Jun '17, May '16, Mar '15	It could be hydrolocked. Thus happens when the carburetor float valve sticks, and/or petcock malfunction, this allows fuel to fill the cylinder. Remove the spark plugs and crank the engine, if it is hydrolocked, fuel will shoot out the spark plug hole. To fix this verify the petcock is operating properly, and check the float needle valves for wear, if in doubt replace, and adjustment of the floats, If no inline fuel filter is present, install one. __________________________________________________ *violente et ignorantia* ZX-2R BLOG *Twitter and Instagram = Ghostt_Scott* *I'm not here to change your mind, just to inform.*
	1 out of 1 members found this post helpful.

September 8th, 2016, 01:07 PM	#4
steezertotter ninjette.org newbie Name: Ben Location: Denver Join Date: Aug 2016 Motorcycle(s): 2004 EX250-F Posts: 2	It starts off the center stand. I could hear the motor pushing even when it was not moving but I'll check for an electrical issue. The problem now seems like it resolved it self because it will start now I'm any position but I'm waiting to see if it's recurring

September 9th, 2016, 08:10 AM	#10
jkv45 Rev Limiter Name: Jay Location: WI Join Date: Jul 2013 Motorcycle(s): '06 SV650n, '00 Derbi GPR, '64 CA77 Dream 305, '70 CL450 Scrambler, numerous dirt bikes Posts: A lot. MOTM - Jun '18, Oct '16	I was thinking possible hydrolock as well, or maybe a battery that is on the edge. Has the oil level risen at any time? I would get a volt meter and check the battery voltage. You should get 12.7V (100% charged) before cranking. Also test it when you hit the button - you should still be in the 10V range. If it drops off more than that the battery is bad. Also check all of the connections if the battery checks out fine.
	1 out of 1 members found this post helpful.

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