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Old November 4th, 2013, 06:12 PM   #1
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Unhappy Engine Seized

Hello I am a lurker but would appreciate anyone's help.

I’ll get straight to the point…

My Ninja 250 loss all her oil on the freeway while going about 75mph.

Pulled over immediately after hearing a pop and the bike only traveled 300 ft.

Not sure how long i traveled without oil though :/


The following day I used JB Weld to patch the hole where it leaked and I changed the filter and checked the screen for debris.

Shortly after adding fresh oil the motor made a horrible noise as I hit the starter and did a few turns but it seized and wouldn’t turn anymore.

Wondering what my options are for repair???

Or if any of you know of a wrecked pregen with a good motor please let me know.

This bike isn't worth much, but I enjoyed riding it and would like to have her running again.

Any help would be appreciated.
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Old November 4th, 2013, 06:48 PM   #2
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I believe the engine is toast. Not worth putting money into if you ask me.

As always keep a close eye on oil level. Did the oil light ever come on?
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Old November 4th, 2013, 07:30 PM   #3
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Yeah, I won't put any money on this motor, but i will look inside of her and see what happen.

Found a guy selling one with a good motor. Unfortunately he wants $800.00 for a bike with no paperwork and no carburetor(s)

offered $400.00
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Old November 4th, 2013, 07:31 PM   #4
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Yes after the pop the oil light came on..

I did a pre ride inspection and didn't notice an oil leak or it runing low on oil

Quote:
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I believe the engine is toast. Not worth putting money into if you ask me.

As always keep a close eye on oil level. Did the oil light ever come on?
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Old November 4th, 2013, 08:28 PM   #5
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..........The following day I used JB Weld to patch the hole where it leaked..........
May I ask you to describe the cause of your misfortune a little more in detail?

Didn't the rear tire slide rolling over so much oil?

Yes, your best option is locating and buying a used engine in good condition.

If you have not yet, read this thread:
http://www.ninjette.org/forums/showthread.php?t=147647
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Old November 4th, 2013, 08:42 PM   #6
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throw in a used engine, then take apart blown engine and learn a thing or two.





I heard the engine in a R........awwww screw it:

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Old November 5th, 2013, 04:43 AM   #7
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the hole where it leaked

Yeaaaaah, I'd like to see a pic if that if you get the chance. What caused the hole??
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Old November 5th, 2013, 05:29 AM   #8
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The hole was probably a rod going loose. Pictures please.

Sorry you need a new engine. They are not that expensive on eBay and easy to swap.
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Old November 5th, 2013, 06:08 AM   #9
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Yes, pictures please. I think a rod is a balanced set so you might need two of them. The rods are matched to the crank via the bearings. There are markings on both the crank and the rods that indicate which bearings to use. If you get a set of new rods with different markings, then you'll have to buy new bearings too.

You'll also need 4 new rod bolts and 4 nuts. You really shouldn't use the old ones. They are made of special one time stuff. I tried reusing mine and they wouldn't torque, they just stretch.

Just curious, but how many miles on the blown engine?

Also, if JB-weld works, then great, but you may ultimately need a welder to fix the hole. And I should mention that a whole new case runs about $35 on ebay.

Ultimately, its your choice whether you want to fix or just buy a used engine, but the problem with used engines is that its a gamble and you already own a used engine. If you need a lot of new parts to fix the old one, then they will add up fast. If the crank is bad, then its no longer cost effective to rebuild. The advantage to fixing the old engine is that when its done, assuming you did it right, it will be a brand new engine.

When you pull it apart, be sure to examine the cylinder tails and piston skirts to make sure they aren't chipped. When rods break, they have a tendency to damage those.

Good luck.
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Old November 5th, 2013, 10:51 AM   #10
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The first oil change I did I stripped the oil drain bolt and had a temp plug installed that I thought was snug.

The temp plug must have blow off and dumped the oil on the highway.

That's how i got into this mess.

Afterwards the JB Weld was used to just keep the (original) oil drain plugged for good and I installed a 2008-2012 ninja 250 oil drain instead.

Unfortunately the engine wont turn and I'll be dissembling the whole motor next weekend.
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Old November 5th, 2013, 10:53 AM   #11
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Yes, pictures please. I think a rod is a balanced set so you might need two of them. The rods are matched to the crank via the bearings. There are markings on both the crank and the rods that indicate which bearings to use. If you get a set of new rods with different markings, then you'll have to buy new bearings too.

You'll also need 4 new rod bolts and 4 nuts. You really shouldn't use the old ones. They are made of special one time stuff. I tried reusing mine and they wouldn't torque, they just stretch.

Just curious, but how many miles on the blown engine?

Also, if JB-weld works, then great, but you may ultimately need a welder to fix the hole. And I should mention that a whole new case runs about $35 on ebay.

Ultimately, its your choice whether you want to fix or just buy a used engine, but the problem with used engines is that its a gamble and you already own a used engine. If you need a lot of new parts to fix the old one, then they will add up fast. If the crank is bad, then its no longer cost effective to rebuild. The advantage to fixing the old engine is that when its done, assuming you did it right, it will be a brand new engine.

When you pull it apart, be sure to examine the cylinder tails and piston skirts to make sure they aren't chipped. When rods break, they have a tendency to damage those.

Good luck.
The blown engine has 5,500 miles.

Thanks for the info.

I'll take her apart and see what needs replacing.
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Old November 5th, 2013, 10:56 AM   #12
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Bummer...

Keep your eye on this section - http://www.ninjette.org/forums/forumdisplay.php?f=16 - for a used replacement engine if you feel the rest of the bike is in good condition.

You're lucky you didn't go down when the plug blew out. If you were cornering at the time it would have been a different story.
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Old November 5th, 2013, 11:33 AM   #13
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Bummer...

Keep your eye on this section - http://www.ninjette.org/forums/forumdisplay.php?f=16 - for a used replacement engine if you feel the rest of the bike is in good condition.

You're lucky you didn't go down when the plug blew out. If you were cornering at the time it would have been a different story.
Thanks, and I agree I was lucky not to slide
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Old November 5th, 2013, 08:06 PM   #14
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........The temp plug must have blow off and dumped the oil on the highway.

That's how i got into this mess........
Any motorcyclist following your track must have had its own mess.
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Old November 5th, 2013, 09:15 PM   #15
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Quote:
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The first oil change I did I stripped the oil drain bolt and had a temp plug installed that I thought was snug.
Ok, that is something else. Looks like you ran it at high speed for an unknown length of time with no oil and burned up the engine. You wont know anything until you split it and take it apart. At a minimum, your bearings are toast. And like I said before, if the crank is ruined, its time for another engine. The probability of a ruined crank is very high.
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Old November 5th, 2013, 10:00 PM   #16
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Oh that drain plug is definitely the culprit. You may want to get a torque wrench in the future....
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Old November 6th, 2013, 02:36 PM   #17
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http://ventura.craigslist.org/mpo/4102794540.html

found a donor motor

Told the guy I'll pick her up today if he accepts $300.00.

Will this motor work? He doesn't know the mileage.
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Old November 6th, 2013, 04:47 PM   #18
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No paperwork usually = stolen. Ask for VIN# which you can check yourself. Its almost a sure bet that its stolen if he doesn't have the keys either.

I'm not sure how anyone can not know the mileage when all they have to do is look at the odometer.

Is he willing to prove that the engine runs? Or does he have another excuse?

Notice that the bike has been sitting for a long time, probably 10 years or more, given the amount dust that has collected on it. I doubt if anyone has sat on it much less ridden it in that time.

If he is willing to let you verify the VIN, which is free and easy online, and assuming it does not come back stolen, then I would proceed with caution. At the very least, you need to take a battery or jumper pack hook it directly to the starter to verify that the engine does at least turn over. But having sat that long, its highly unlikely that it will start because the carbs are probably gummed up.

If the engine looks good, and its not stolen, then I'd consider the $500 for the whole bike. That way you have plenty of spare parts.
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Old November 6th, 2013, 05:07 PM   #19
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That whole bike is worth like 300 tops as it sits. No keys, title, or proof that it runs. I wouldnt buy it. Especially if you dont feel confident in getting it running, cleaning carbs, valves, oil change. But theres nothing saying that engine is good.
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Old November 6th, 2013, 06:40 PM   #20
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That whole bike is worth like 300 tops as it sits. No keys, title, or proof that it runs. I wouldnt buy it. Especially if you dont feel confident in getting it running, cleaning carbs, valves, oil change. But theres nothing saying that engine is good.
I'll keep my eyes out for a better engine. THIS SUCKS FYI
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Old November 7th, 2013, 06:42 AM   #21
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Usually ebay is the best place to buy used engines. The sellers don't want to get a bad rep from you so they tend to be honest. The problem is shipping costs. But sometimes you can find a guy that is within driving distance and you can pick it up in person. And sometimes you just get lucky. I just bought one for $400 + free shipping. I was convinced that there was something wrong with it when I bought it, so I tore it down. Turns out nothing was wrong except worn bearings which is acceptable for an engine with 20K miles on it.
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Old November 7th, 2013, 11:19 AM   #22
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that guy on Craigslist said the bike has 130,000 miles

I am pretty sure he means 13,000...

Asked him to send me a picture
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Old November 7th, 2013, 11:31 AM   #23
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Yeah it only has 13,000.00

He has the keys and the reason why he doesn't have a title slip is because he didn't finish paying it off due to bankruptcy.
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Old November 7th, 2013, 11:35 AM   #24
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Yeah it only has 13,000.00

He has the keys and the reason why he doesn't have a title slip is because he didn't finish paying it off due to bankruptcy.
That would mean he doesn't actually own it then.
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Old November 7th, 2013, 11:50 AM   #25
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That would mean he doesn't actually own it then.
This is true.

I'll keep searching
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Old November 7th, 2013, 01:31 PM   #26
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That would explain why its been sitting so long. He probably couldn't get a tag or insurance once he stopped paying for it. I'm not sure how it works there, but in FL, the bank keeps the title until its paid off. He definitely sounds dishonest so I wouldn't deal with him.

Like I said, try ebay. You can set up email alerts so when one gets posted, it will email you.
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Old November 7th, 2013, 01:45 PM   #27
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Yeah it only has 13,000.00

He has the keys and the reason why he doesn't have a title slip is because he didn't finish paying it off due to bankruptcy.
Bankruptcy is a fickle thing from state to state, so be for sure. But in general, if their bankruptcy has been discharged, he DOES own the bike and just hasn't completed the paperwork to get the lien off the title. They had their chance to be included as a creditor in the bankruptcy case. If not, their loss.

Be safe rather than sorry here, pass on this one and find a better deal.
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Old November 7th, 2013, 03:04 PM   #28
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I heard the engine in a R........awwww screw it:
the real question is when does your r6 arrive? too late to upgrade to r1?
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Old November 8th, 2013, 11:57 AM   #29
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the real question is when does your r6 arrive? too late to upgrade to r1?
I got offered $14,000.00 for my paid off Toyota Tacoma... SHould I sell that and get an R6???

JKJK the truck is used for transporting my dirtbikes
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Old January 8th, 2014, 06:51 PM   #30
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UPDATE

I found a pregen motor for almost free

had to drive really far for it though.

Will post pics of the the project
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Old January 8th, 2014, 06:56 PM   #31
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here is a pic.. I think this was a wreck bike. Hopefully the engine runs.
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Old January 8th, 2014, 11:49 PM   #32
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Does the motor even run? lol
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Old January 9th, 2014, 12:07 AM   #33
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Does the motor even run? lol
It spun from the crank, so that was good enough for me.

I just finished the whole swap..

RUNS GOOOD

My petcock isn't flowing to well after taking it apart and cleaning it...
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Old January 9th, 2014, 12:42 AM   #34
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What's your base of judgement for the flow rate? compared flow rate with petcock on prime before and after your cleaned?

Make sure your vacuum lines are hooked up properly and there isn't any leaks.
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Old January 9th, 2014, 12:54 AM   #35
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What's your base of judgement for the flow rate? compared flow rate with petcock on prime before and after your cleaned?

Make sure your vacuum lines are hooked up properly and there isn't any leaks.
I only have about 16 oz of gasoline in the tank at the moment, so the flow rate on reserve is almost non existent just drops.

I'll fill the tank tomorrow and see if the flow rate on Prime has improved.
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Old January 9th, 2014, 12:58 AM   #36
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Here we have a picture of a 2001 Ninja 250cc engine with only 5,499 miles.

It won't spin, so I will try and disassemble the motor and figure out what happen
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Old January 9th, 2014, 05:04 AM   #37
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Here we have a picture of a 2001 Ninja 250cc engine with only 5,499 miles.

It won't spin, so I will try and disassemble the motor and figure out what happen
I would begin by inspecting the valve train.
If nothing is broken or rusted in there, I would next inject some 50/50 mix of marvelous oil (or transmission fluid) / acetone through the spark plugs hole, letting each cylinder soak the mix for one or two days, while cleaning the carbs.

If frozen pistons is the only problem that stops it from turning, that trick will do, avoiding further surgery and new gaskets.
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Old January 9th, 2014, 06:28 AM   #38
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There is no prime on a pregen petcock. A low flow problem may be more from the lack of gas as you suspected. The other culprit might be that the intake screens are clogged. But if you just cleaned it, there should be no problem. I suggest you put a short tube on the vacuum line and see if it opens when you suck on it. It shouldn't take very much suction.

Congrats on finding a new engine.
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Old January 9th, 2014, 12:06 PM   #39
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Originally Posted by n4mwd View Post
There is no prime on a pregen petcock. A low flow problem may be more from the lack of gas as you suspected. The other culprit might be that the intake screens are clogged. But if you just cleaned it, there should be no problem. I suggest you put a short tube on the vacuum line and see if it opens when you suck on it. It shouldn't take very much suction.

Congrats on finding a new engine.
Thanks

It was a pain in the @ss finding a used motor.

The Petcock was completely disassembled and cleaned with carburetor cleaner. The Petcock intake screens were falling apart. It's gnarly how nasty the fuel system gets..

I'll try and see if it's the vacuum as you suggested.

Last futzed with by Ish; January 9th, 2014 at 12:06 PM. Reason: TYPO
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Old January 9th, 2014, 12:12 PM   #40
Ish
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Name: Ish
Location: San Clemente, California
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Motorcycle(s): Ninja 250 2001 KX125 2001

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Quote:
Originally Posted by Motofool View Post
I would begin by inspecting the valve train.
If nothing is broken or rusted in there, I would next inject some 50/50 mix of marvelous oil (or transmission fluid) / acetone through the spark plugs hole, letting each cylinder soak the mix for one or two days, while cleaning the carbs.

If frozen pistons is the only problem that stops it from turning, that trick will do, avoiding further surgery and new gaskets.
I'll try that for sure.

THanks!

I'll be starting a new thread in regards to the old motor.
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