February 13th, 2015, 01:41 AM | #1 |
ninjette.org member
Name: Patrick
Location: Fort Worth
Join Date: Feb 2015 Motorcycle(s): 2004 Kawasaki Ninja 250 & 2004 Suzuki Katana 750 Posts: 15
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need help but i know im going to sound like an idiot
I bought my daughter a 2004 ninja 250 with an 05 motor in it for Xmas. It was apart and in pieces when I got it but I've torn my Suzuki Katana 750 apart without any issues. My problem is a bad knock when its running. Don't think its normal. Anyway I did an oil pressure test as well as a compression test. Both look great actually so thought it might be valve clearance. Now here is where you might think I'm stupid. My bike is air cooled and this is my first time with one that has a radiator. Took off head cover and there is antifreeze inside of heads. Is that normal? Before I go any further if that is not supposed to be inside there I need to figure out how it got in there. Also it has no air filter I'm waiting for it to arrive after ordering it so I know the air mixture is way off which could also be making it sound weird to me I am used the the sound of my 750
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February 13th, 2015, 02:06 AM | #2 |
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Name: Tim
Location: NJ
Join Date: Sep 2013 Motorcycle(s): 2006 Ninja 250 Posts: 47
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So you found antifreeze mixed in with the rockers valve springs underneath the valvecover? No that is not normal and that would definitely destroy your bearings. Coolant doesn't make for a great lubricant. Well, it does for the water pump, but not cranks and rods. I can't remember exactly how the coolant runs through the head but I do know there are a couple of tubes leading into it. I'd start with checking for cracks around that area.
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February 13th, 2015, 02:11 AM | #3 |
ninjette.org member
Name: Patrick
Location: Fort Worth
Join Date: Feb 2015 Motorcycle(s): 2004 Kawasaki Ninja 250 & 2004 Suzuki Katana 750 Posts: 15
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Yes and I did not think it belonged there. Ok now I know its time to just pull the motor completely out and tear it completely down. Thank you so very much. Now my biggest problem is going to be finding all the gaskets to replace. Only one I can find is head and valve cover so far. Any ideas where to look for complete engine gasket kits?
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February 13th, 2015, 07:40 AM | #4 | |
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Name: Hernan
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Quote:
Check the oil in the crankcase, coolant may be there as well. The clutch naturaly makes a sound like the one you describe.
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February 13th, 2015, 08:07 AM | #5 |
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Name: Bob
Location: Chicago
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Some EX250 engines knock at slow idle, which is not a problem, and they all have noisy valve trains (if they are adjusted loosely enough), so don't be too quick to tear the whole thing down.
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February 13th, 2015, 06:07 PM | #6 |
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Name: Hernan
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Please read these:
http://faq.ninja250.org/wiki/Hints_%...lve_Adjustment (Look for "Leaking coolant pipe") http://faq.ninja250.org/wiki/What%27..._the_clutch%3F http://faq.ninja250.org/wiki/What_is..._the_engine%3F http://faq.ninja250.org/wiki/Cooling_system http://faq.ninja250.org/wiki/EX250_parts_diagrams http://faq.ninja250.org/wiki/Cam_cha...sioner_removal
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Motofool .................................Never ride faster than your guardian angel can fly "Mankind is composed of two sorts of men — those who love and create, and those who hate and destroy. Love is the bond between men, the way to teach and the center of the world." - José Martí |
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February 13th, 2015, 10:30 PM | #7 |
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Name: Scott
Location: Summer Shade, Ky.
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@txnili
If the engine is in fact shot, don't waste your time, money and effort, trust me, find another low miles replacement, check the sale section in this forum, there is always something floating around there. Question: does the knocking noise go away if you pull in the clutch?
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February 14th, 2015, 02:26 AM | #8 |
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Name: Patrick
Location: Fort Worth
Join Date: Feb 2015 Motorcycle(s): 2004 Kawasaki Ninja 250 & 2004 Suzuki Katana 750 Posts: 15
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Thanks everyone as long as the block isn't cracked I have no problems fixing and rebuilding a motor. Even though I'm not a mechanic I have the ability to fix anything except a DVD player. Those I would say to hell with trash and replace. But a motor helps me learn something new. Don't know about clutch I started it in neutral and had no reason to pull clutch. Knocking sound was coming from head cover. Only thing I was unsure of was antifreeze being up in with the valves. I already torn it out and apart the head gasket has failed it is in bad shape and around the piston shaft it has been chipped so I ordered a new one.
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February 14th, 2015, 02:48 AM | #9 |
ninjette.org member
Name: Patrick
Location: Fort Worth
Join Date: Feb 2015 Motorcycle(s): 2004 Kawasaki Ninja 250 & 2004 Suzuki Katana 750 Posts: 15
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Thank you motofool. I bought the Haynes book and read thru it about 6 times and watched countless YouTube videos before I decided to tear into this. When I saw the coolant in with my valves though it made up my mind to figure out what is causing that and stop it.
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February 14th, 2015, 06:18 AM | #10 | |
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Name: Hernan
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Quote:
These engines get twisted heads as soon as the coolant level is too low. Then coolant leaks down into the crankcase and then it gets inside the lubrication circuit. In other words, if present around valves, it has been everywhere else and has damaged the main bearings. Draining the oil will tell you if that is the case. It is not rare, however, to have coolant leaking from the tube-head conection during removal of the head cover.
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Motofool .................................Never ride faster than your guardian angel can fly "Mankind is composed of two sorts of men — those who love and create, and those who hate and destroy. Love is the bond between men, the way to teach and the center of the world." - José Martí |
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February 14th, 2015, 07:32 AM | #11 |
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If you could identify the coolant under the valve cover and it was not mixed with the oil then it spilled in from the hose at the back of the head.
Knocking sounds can be from the clutch basket. If it has oil pressure and compresson it might be that. Or not. Just go slow and photograph as you go. Get a manual and don't reise rod bolts. Also if you can find a machinest befor you start. Local is best or thee are a couple people on the forum that do machine work. These engines are getting scarce fast so buying another is still an option.
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February 14th, 2015, 01:04 PM | #12 |
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.
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February 14th, 2015, 09:13 PM | #13 |
ninjette.org member
Name: Patrick
Location: Fort Worth
Join Date: Feb 2015 Motorcycle(s): 2004 Kawasaki Ninja 250 & 2004 Suzuki Katana 750 Posts: 15
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Drained the oil and somehow it is not inside the crankcase it was only up with the valves. I did get a manual and have read it several times already the head gasket is fried bad and chipped around piston shaft. I got a new one on the way. Not sure how I could have leaked it from hose above. I separated it first from top pulled up cover just enough to release tab then put it back on upside down so fluid would have to travel up 90° bend first and shoved a papertowel in it but apparently I am not as careful as I thought and looks like I did spill some somehow. Not sure how to send a pic on here or I would show you all the head gasket.
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February 14th, 2015, 09:18 PM | #14 | |
Daily Ninjette rider
Name: Hernan
Location: Florida
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Quote:
Just click on the paperclip icon on top of your reply window and attach it. Check the type of file and the max size pic allowed.
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Motofool .................................Never ride faster than your guardian angel can fly "Mankind is composed of two sorts of men — those who love and create, and those who hate and destroy. Love is the bond between men, the way to teach and the center of the world." - José Martí |
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February 14th, 2015, 09:24 PM | #15 |
ninjette.org member
Name: Patrick
Location: Fort Worth
Join Date: Feb 2015 Motorcycle(s): 2004 Kawasaki Ninja 250 & 2004 Suzuki Katana 750 Posts: 15
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February 14th, 2015, 09:25 PM | #16 |
ninjette.org member
Name: Patrick
Location: Fort Worth
Join Date: Feb 2015 Motorcycle(s): 2004 Kawasaki Ninja 250 & 2004 Suzuki Katana 750 Posts: 15
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Thanks motofool I've been using quick reply box on bottom
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February 14th, 2015, 09:51 PM | #17 |
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You can hit the "go advanced" button at the bottom of the quick reply box, and it opens up into a normal interface with all of the bells and whistles.
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