new top end... oil coming out of pipe!!!!

[allard_msu76]

i just had a shop here in town rebuild the top end on my 95 cr 250 but now when it starts oil shoots out of the pipe until its almost empty. HELP :bang:

 

[IndyMX]

That's spooge.. Learn to jet. You're probably way rich.

 

[sixds]

i think theres a new one of these threads here every day..

 

[rpm12505]

Until what is almost empty? :yikes:

 

[allard_msu76]

i think its oil out of the bottom end... if i only put half of a quart of oil in it doesnt do it.
i thought maybe the guy who rebuilt it didnt put a seal in properly.

 

[rpm12505]

That would be gear case oil and your right, seal is leaking.
And they wouldn't have touched the seals to do a top end.

 

[allard_msu76]

thanks im in the process of tearing the motor down now and should know for sure soon.

 

[allard_msu76]

what seal should i replace to fix the problem

 

[m4i2k2e2]

it will be the damged seal. just closely inspect them all and see what you come up with.

 

[Ol'89r]

what seal should i replace to fix the problem

Right side crankshaft seal.

Remove the side cover, clutch, pinyon gear on the crank and pry the old seal out. Use a socket that is slightly smaller than the new seal to drive it back in. Place a chunk of aluminum or another pinyon gear between the pinyon gear and the clutch gear to lock the crank while loosening and tightening the crank nut.

 

[zaneyzrex]

could be the clutch side seal or it could be the seal between the piston area and trans area. hope its the clutch side seal for your sake.

 

[Ol'89r]

could be the clutch side seal or it could be the seal between the piston area and trans area. hope its the clutch side seal for your sake.

Same seal.

Right side crankshaft seal.

If it is draining the gearbox of oil, it would be the right side crank seal. If it were the left side seal it would suck air and would either not start or would over rev.

Both seals can be replaced without splitting the cases.