400ex problems

hey guys got another ? bout my ex..... today i was losenin up the bolts on the back of the swing arm to tighten my chain and a bunch of liquid started runnin out..... it ran out for like 5 min any idea wat tht is?


Also i have been having problems with the sprockets feelin like they r slipping..... today i was tryin to make sure the loose chain and wore sprockets were the problem...... i held in the front brake and started to take off slowly and the back by the sprocket was makin a grinding sound but chain doesnt look like it is slipppin at all....... wen i am turnin it gets worse any ideas wat tht might be?

Have you checked your rear bearings ?

Originally Posted by quadnut20 Have you checked your rear bearings ?

Also post some pics so we can see what your referring!

hopefully the rear sprocket is slipping rather than on the other end! can you see clear enough to see if it's that?

Originally Posted by oxidized_black hopefully the rear sprocket is slipping rather than on the other end! can you see clear enough to see if it's that?

It would be kinda hard for your sprocket to slip since its bolted on !!

The liquid might of been water stuck inside the carrier...possibly. There is a gasket between tje pinch bolts that might be damaged.
Ckeck the condition off the rear sprocket teeth make sure they aent damaged. Lastly you should take apart your rear axle as the sprocket hub might be slipping on the splines

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Originally Posted by quadnut20 It would be kinda hard for your sprocket to slip since its bolted on !!

all i was trying to say is if the rear sprocket is moving or not, it's either ther rear end or at the crank... you should be able to somewhat feel it on the bike if it's at one end or the other... yes? no?

Originally Posted by oxidized_black all i was trying to say is if the rear sprocket is moving or not, it's either ther rear end or at the crank... you should be able to somewhat feel it on the bike if it's at one end or the other... yes? no?

Yes !

[I]probably best to get the rear on a stand and try isolating the problem. should be able to tell fairly quickly ...[I]

Originally Posted by quadnut20 Have you checked your rear bearings ?

No..... it started doin this just recently wen i was on the dirtroad i came back and had to go up a hill to get to my barn and it stated making a grinding sound real bad