Anniwoodlator
ArboristSite Lurker
My 2020 model 3120 XP still leaks chain oil through muffler. I've tested it for pressure, vacuum and compression and everything is working fine. Any suggestions?
Yes, it is bar oil combined with exhaust carbon residue. Not a lot but enough to drip down the muffler fins.I'm assuming you mean it blows out the muffler while it's running? How much? Are you positive it's bar oil?
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No way bar oil is getting inside the muffler through the oiler. If it's oiling excessively, it could be spraying up onto the muffler, but tha even seems far fetched. What pinhole are you talking about?Yes, I applied seven pounds of pressure with cap off for three minutes using a mityvac and needle remained steady. Could it be a defective oiler excessively lubricating the crankshaft pin hole?
So, do you suggest to replace the crankshaft?That's to lube your clutch bearing. Doesnt have anything to do with the Internal bearings in the engine. Theres a check valve to prevent anything getting back in the crankcase. I dont thinknits serviceable
Thanks!!Hamish had a bulletin posted about it and knows more then I do, I do not believe it to be serviceable, but cannot say for sure.
I had a 390XP that I knew had a leak between the tank & crankcase. Took me 3 goes to find it... didn't show up under pressure/vac... didn't make bubbles underwater... only became apparent when everything was hot. Got loctite to whick into it when it was hot & under vacuum & it appears to have fixed it but I haven't put the saw back to work yet.
I did change the gasket and it's sealing, used my thumb to plug it and pressure/vac tested it for three minutes and gauge needle remained steady, but still there's oil coming out of the muffler. Oil/gas mix ratio is fine too. How would you plug it?Its only there to lube the clutch bearing, you need to plug it to do a vac/pressure test. For your bar oil issue you most likely need to replace your crankcase gasket.
I apologize for this earlier post and have asked for it to be deleted and sent an apology via PM. I was not myself when it was made.I thought the crank bearings were lubed with the oil in the fuel. If there is a hole in the crank into the crankcase, how did it not leak during your pres/vac test? OK, you caught one with your trolling BS. Glad the ignore button still works.
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