cbr f2

lost cause · 07-22-2009, 03:34 PM

well i went to start my 1993 cbr f2 today and it locked up. pulled the plugs they had a little oil on them but no much pulled the carbs and the NUMBER FOUR CYLINDER WAS FULL OF GAS THE VAVVLES WONT GO UP OR DOWN SO IVE STARTD TO PULL THE MOTOR ANY IDEAS WHAT WOULD CAUSE THIS

whitedevil · 07-22-2009, 03:40 PM

How did you try to verify that the valves won't go up or down?

Sounds like something is seized to me. Check the cam chain and tensioner, seems to be an epidemic with those lol.

lost cause · 07-22-2009, 03:44 PM

when i try to start it the valves dont move and ive heard about the cam chain deal but i dont now where its located or if it would cause it to lock up it ran fine yesterday

lost cause · 07-22-2009, 03:57 PM

anothe note is theres oil on the top of the valve cover and some underneather the carbs

whitedevil · 07-22-2009, 04:21 PM

First thing I would do is find out where the oil is coming from, if its just a loose head bolt then no biggy, but if there is a crack somewhere or a hole in the block? yucky! whats oil level at, is it good?

So the starter itself wont turn the crank? did you try putting it in neutral and push it, pop it into gear? Is it possible the starter itself is bad?

lost cause · 07-22-2009, 11:40 PM

no the starter trys to click it over there doesnt seem to be any cracks or holes i can see. its locked up i have the vavle cover of and the cams wont turn or the vavles i pulled the radiator to take the vavle cover off so i can push it and pop the clutch it made a loud pop noise like my other cbr did when i blew a hole in the piston but this motor doesnt have the signs my other on did so iam stumped

lost cause · 07-23-2009, 12:28 AM

ok so brandon and other bradon and i pulled the stator cover off and pulled the starter out and found that the pieace that holds the stater gear in place broke still messin with it tryin to figure shit out

whitedevil · 07-23-2009, 11:05 AM

so far, it still seems to be something with the starter and not the engine. I am still confused with you looking at the valves to see if they are doing anything? Unless you are turning your engine over by hand and a breaker bar, its not going to do anything when the starter is not working properly.

lost cause · 07-23-2009, 11:31 AM

ok the last cbr i had i bent the vavle and the evently it broke of witch is what i thought i did. but it wassnt we opened the stator cover and the cast aluminum pieace that hold the statr gear in place had broken off so i can get it to turn over now because we moved the gear back into place but there is a peace of that cast that broke off so the gear can move arround and possible cause it sezie while riding

whitedevil · 07-23-2009, 11:53 AM

Quote:

Originally Posted by lost cause

ok the last cbr i had i bent the vavle and the evently it broke of witch is what i thought i did. but it wassnt we opened the stator cover and the cast aluminum pieace that hold the statr gear in place had broken off so i can get it to turn over now because we moved the gear back into place but there is a peace of that cast that broke off so the gear can move arround and possible cause it sezie while riding

So you got all of the broken piece out? Are you talking about the shaft/rod that the gear sits on? dang!

Bungeeguy · 07-23-2009, 12:18 PM

The problem you are describing is called a hydraulic seize. Most likely one of your carb floats stuck and the intake valves on your #4 cylinder were open while it was parked, this caused the gas to flow in and then when you tried to start it the piston pushed the gas into the valves bending one or more.

lost cause · 07-23-2009, 12:36 PM

nope no sezize she turns over but the startr gear just kind of shits there so if i ride on it, it could move and lock up on me while am goin downn the road but i do have an extra enigne case i just dont have the now how to change the top half the motor out i dont wana mess with the timing or anything so iam kinda stuck unless i can find sum on to weld somthing similar on to the case to hold the gear in place and i got all the broen parts out of it

whitedevil · 07-23-2009, 01:57 PM

Quote:

Originally Posted by lost cause

nope no sezize she turns over but the startr gear just kind of ###ts there so if i ride on it, it could move and lock up on me while am goin downn the road but i do have an extra enigne case i just dont have the now how to change the top half the motor out i dont wana mess with the timing or anything so iam kinda stuck unless i can find sum on to weld somthing similar on to the case to hold the gear in place and i got all the broen parts out of it

That shaft that the sprocket for the starter sits on is not attached to the motor, that is a rod that is placed into that hole after you get the sprocket lined up. Or did the hole that the rod goes into break?

lost cause · 07-23-2009, 01:57 PM

part.jpg

whitedevil · 07-23-2009, 01:59 PM

Quote:

Originally Posted by lost cause

Attachment 847

ah crap, so the casting that holds the rod in place is broke. damn. I know someone that can weld that. I will check to see how soon he can get it done if you want.

lost cause · 07-23-2009, 02:00 PM

2.jpg

Back Of The Pack · 07-23-2009, 02:26 PM

"i got all the broen parts out of it" YOU did? lol j/k.

Back Of The Pack · 07-23-2009, 02:29 PM

Quote:

Originally Posted by whitedevil

ah crap, so the casting that holds the rod in place is broke. damn. I know someone that can weld that. I will check to see how soon he can get it done if you want.

if its welded will it hold? no concerns about re-breaking,there is a small crack that runs down the casting edge about a quarter of an inch.

whitedevil · 07-23-2009, 02:40 PM

It wouldn't be my call, it would by my buddy Casey, I have yet to find something that he can not weld, hell he just welded my stater cover case which is magnesium! But if he did it, it wouldn't happen again.

lost cause · 07-23-2009, 03:25 PM

ya let me know when and how much he would charge me to do it

07-22-2009, 03:34 PM	#1
lost cause Senior Member Joined: Jul 2009 From: boise Posts: 745 I Ride: low and slow	cbr f2 well i went to start my 1993 cbr f2 today and it locked up. pulled the plugs they had a little oil on them but no much pulled the carbs and the NUMBER FOUR CYLINDER WAS FULL OF GAS THE VAVVLES WONT GO UP OR DOWN SO IVE STARTD TO PULL THE MOTOR ANY IDEAS WHAT WOULD CAUSE THIS

07-23-2009, 01:57 PM	#14
lost cause Senior Member Joined: Jul 2009 From: boise Posts: 745 I Ride: low and slow	busted f2 part.jpg

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07-22-2009, 03:40 PM	#2
whitedevil Senior Member Joined: May 2008 From: Que Nah Posts: 5,876 I Ride: F4i CBR600	How did you try to verify that the valves won't go up or down? Sounds like something is seized to me. Check the cam chain and tensioner, seems to be an epidemic with those lol.

07-22-2009, 03:44 PM	#3
lost cause Senior Member Joined: Jul 2009 From: boise Posts: 745 I Ride: low and slow	when i try to start it the valves dont move and ive heard about the cam chain deal but i dont now where its located or if it would cause it to lock up it ran fine yesterday

07-22-2009, 03:57 PM	#4
lost cause Senior Member Joined: Jul 2009 From: boise Posts: 745 I Ride: low and slow	anothe note is theres oil on the top of the valve cover and some underneather the carbs

07-22-2009, 04:21 PM	#5
whitedevil Senior Member Joined: May 2008 From: Que Nah Posts: 5,876 I Ride: F4i CBR600	First thing I would do is find out where the oil is coming from, if its just a loose head bolt then no biggy, but if there is a crack somewhere or a hole in the block? yucky! whats oil level at, is it good? So the starter itself wont turn the crank? did you try putting it in neutral and push it, pop it into gear? Is it possible the starter itself is bad?

07-22-2009, 11:40 PM	#6
lost cause Senior Member Joined: Jul 2009 From: boise Posts: 745 I Ride: low and slow	no the starter trys to click it over there doesnt seem to be any cracks or holes i can see. its locked up i have the vavle cover of and the cams wont turn or the vavles i pulled the radiator to take the vavle cover off so i can push it and pop the clutch it made a loud pop noise like my other cbr did when i blew a hole in the piston but this motor doesnt have the signs my other on did so iam stumped

07-23-2009, 12:28 AM	#7
lost cause Senior Member Joined: Jul 2009 From: boise Posts: 745 I Ride: low and slow	ok so brandon and other bradon and i pulled the stator cover off and pulled the starter out and found that the pieace that holds the stater gear in place broke still messin with it tryin to figure shit out

07-23-2009, 11:05 AM	#8
whitedevil Senior Member Joined: May 2008 From: Que Nah Posts: 5,876 I Ride: F4i CBR600	so far, it still seems to be something with the starter and not the engine. I am still confused with you looking at the valves to see if they are doing anything? Unless you are turning your engine over by hand and a breaker bar, its not going to do anything when the starter is not working properly.

07-23-2009, 11:31 AM	#9
lost cause Senior Member Joined: Jul 2009 From: boise Posts: 745 I Ride: low and slow	ok the last cbr i had i bent the vavle and the evently it broke of witch is what i thought i did. but it wassnt we opened the stator cover and the cast aluminum pieace that hold the statr gear in place had broken off so i can get it to turn over now because we moved the gear back into place but there is a peace of that cast that broke off so the gear can move arround and possible cause it sezie while riding

07-23-2009, 12:18 PM	#11
Bungeeguy Senior Member Joined: Aug 2006 From: Boise Posts: 628	The problem you are describing is called a hydraulic seize. Most likely one of your carb floats stuck and the intake valves on your #4 cylinder were open while it was parked, this caused the gas to flow in and then when you tried to start it the piston pushed the gas into the valves bending one or more.

07-23-2009, 12:36 PM	#12
lost cause Senior Member Joined: Jul 2009 From: boise Posts: 745 I Ride: low and slow	nope no sezize she turns over but the startr gear just kind of shits there so if i ride on it, it could move and lock up on me while am goin downn the road but i do have an extra enigne case i just dont have the now how to change the top half the motor out i dont wana mess with the timing or anything so iam kinda stuck unless i can find sum on to weld somthing similar on to the case to hold the gear in place and i got all the broen parts out of it

07-23-2009, 02:00 PM	#16
lost cause Senior Member Joined: Jul 2009 From: boise Posts: 745 I Ride: low and slow	2.jpg

07-23-2009, 02:26 PM	#17
Back Of The Pack Senior Member Joined: Apr 2009 From: Boise Posts: 1,214 I Ride: The Busted 1 & The wrecked one.	"i got all the broen parts out of it" YOU did? lol j/k.

07-23-2009, 02:40 PM	#19
whitedevil Senior Member Joined: May 2008 From: Que Nah Posts: 5,876 I Ride: F4i CBR600	It wouldn't be my call, it would by my buddy Casey, I have yet to find something that he can not weld, hell he just welded my stater cover case which is magnesium! But if he did it, it wouldn't happen again.

07-23-2009, 03:25 PM	#20
lost cause Senior Member Joined: Jul 2009 From: boise Posts: 745 I Ride: low and slow	ya let me know when and how much he would charge me to do it