Jump to content
Sign in to follow this  

Accidently got coolant in the cylinder...

Recommended Posts

So I have no idea if I'm posting this to the right area. BUT, I went to check the RC flap valves on my 2003 CR 250 and stupidly removed the cylinder head without draining the coolant first. Needless to say I got coolant everywhere. I drained the rest of the coolant and drained the oil. I have no idea how far down the coolant got. This happened yesterday. I'm going to take the cylinder and piston off when I get home tonight - I'm also doing a top end re-build. Any ideas as to how to get the coolant out of the crankcase if it went that far? Do I have to take the bottom end off of the bike or can I get something in there to soak it up? Maybe flip the bike upside down? Any advice is greatly appreciated!

Share this post


Link to post
Share on other sites

IMO I would flush the bottom end ( crank ) out with gas/oil mix, then flip over and dump to rinse. Since you are doing a top end, I might be better to just remove the engine so you can flip it over and not the hole bike.

You did not have to drain the tranny oil. The crank and the trans. are not connected liked on most 4 jokes.

  • Like 1

Share this post


Link to post
Share on other sites

As it sits the cylinder and piston are still on the bike. I've just removed the head and RC flap valves. Where would I fill it with the gas/oil mix?

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this  

×