2019 kx450 engine

[Bushman]

Hi everyone I’m new to this site. Iv made a balls up when I done my last engine oil change I didn’t tighten my sump plug up fully and while I was riding it came out and I lost my oil. I picked up on it quick and turned it off put a new sump plug in filled it up and ran the bike for a bit then turned it off and let it cool rite off. Iv put 3 hours on it since then and it seems to be ok. Any mechanics out there able to tell me if I should expect any issues from this? What parts of the engine would it effect?

[pete376403]

If the bike has a roller bearing crankshaft it will *probably* be ok, as thats pretty much exactly the same as a two stroke and they get by on an oil mist.
The camshaft bearings are the area most likely to have suffered - also the easiest to check. Pull the cam cover and the cam caps and check for signs of distress.
Gearbox is (again, probably, never had one of these apart) ok as most of it spins on ball bearings so can get by on not much oil for a short time.

Lesson learned - never put a drain plug in without tightening.

[husaberg]

If the bike has a roller bearing crankshaft it will *probably* be ok, as thats pretty much exactly the same as a two stroke and they get by on an oil mist.
The camshaft bearings are the area most likely to have suffered - also the easiest to check. Pull the cam cover and the cam caps and check for signs of distress.
Gearbox is (again, probably, never had one of these apart) ok as most of it spins on ball bearings so can get by on not much oil for a short time.

Lesson learned - never put a drain plug in without tightening.

349551
most of the late stuff is this now

[jellywrestler]

Hi everyone I’m new to this site. Iv made a balls up when I done my last engine oil change I didn’t tighten my sump plug up fully and while I was riding it came out and I lost my oil. I picked up on it quick and turned it off put a new sump plug in filled it up and ran the bike for a bit then turned it off and let it cool rite off. Iv put 3 hours on it since then and it seems to be ok. Any mechanics out there able to tell me if I should expect any issues from this? What parts of the engine would it effect?

if ya big end has lasted three hours it;ll last plenty more, any bad shit there manifests real quick at revs.