How do you stop an oil leak for a Honda CR125?

Question

I am looking into purchasing a Honda 03 Cr125 with a fresh rebuild in the ad. When i took it for a test drive we noticed oil leaking out of the pipe. If u follow the pipe down towards the motor theres a rubber holder or boot where its leaking. And since its a new top rebuild and not rode he said the bike just needs to be rode so it will seal its self for the oil to stop leaking out. Is this true or something more major wrong. Thanks, Matt Smith

Answer 1

That is completely normal, until the bike is ridden hard the oil will not burn out of the silencer. I would be more worried if there was no oil residue, unless the silencer was just repacked. If there was no oil I would be concerned the bike was jetted too lean and that the top end was replaced because it had been seized. Do not add extra oil during break in, you would actually be leaning out the mixture since there would be less gas and more oil. To break in a 2 stroke just ride it easy and let it cool down , do this 3 or 4 times and it's ready to romp on.

Answer 2

Its normal, 2 Strokes drool, what can I say, my RMX250 used to drool like a pitbull (sorry, thinking of Turner and Hooch for second) If it drools, go to a better version of 2 Stroke oil in the gas. I personally use Bel Ray H1R oil at 40:1 and rejetted the carb, cleared it right up. You may need to go richer for a 125 w/ the oil (higher RPM needs more lubrication) but you could play w/ it. Don't forget this, if you ever hit the sand dune (wouldn't do it w/ a 125 to save my life mind you) go richer with either a carb setting or oil mixture. You will need to ride rich until the new piston is broken in too (usually 1 tank will do it) I do remember hearing that the seal at the expansion chamber can leak until it seats itself... I guess mine never seated itself, because it still drools

Answer 3

Stop mixing oil into the gas. Your oil leak will stop and your engine will seize. You don't know enough about bikes to start riding. Get a bicycle.

Answer 4

No i'm no longer besides the undeniable fact that i'm tried of no longer something getting finished - observing human beings lose all they have even as BP does no longer something!!!! it really is trouble-free for each body no longer from the Gulf Coast to whinge - your no longer residing in it!! i'm drained of persons nonetheless complaining about Bush so that they don't see what stupid Obama is doing! Wake you even as its over - this spill affected our tourism - our nutrients - etc.... I stay in Louisiana 2 hours from the coast - locals are even seeing oil contained in the inter coastal elements - guess if it were your outdoor you'd be first in line to -itch!

Answer 5

CR125 is a two stroke whatever the first moron said. XR's or CRF are fourstrokes. The oil is normal, it actually shows it isnt being ridden hard enough/long for the exhaust to get hot

Answer 6

Oil leaks don't fix themselves, motorcycle or otherwise. He's scamming you. This is just my opinion based on experience of course. Call a mechanic shop and ask them just as you asked us, they'll probably tell you the same thing.

Answer 7

i believe that the cr 125 is a 2stroke motor. if so you have to use pre-mixed gas with oil if it is a 2str your alright because the oil is going to come out with the exhaust gasses.

Answer 8

you try to lubricate out the oil first then check the pipe using soap water and seal up the end put air inside see got leaking...sign or not....or you try to check the rubber also...maybe the rubber casket already...expired...become dead rubber already..that my suggestion..
to you....hope that can help you out..

Answer 9

cr 125 is a four stroke it doesnt have a high rpm so its probley a gasket or seal cost between 2-5 bucks

Answer 10

change the piston rings and valve springs may seal itself but sounds like the rings are bad