Base gasket seepage

[DomsKat550]

My 1982 GS550M Katana engine has some oil seepage from front of base gasket, will this effect compression and should I try tightening, or just leave it? Engine has all original gaskets with only 7,500 miles done in first 10 years bike sat in a garage for 30 years before I got it running. Thanks

[Nessism]

Once they start leaking, they usually won't stop after tightening. You can try, though. Nothing to lose. Leaking won't affect compression.

[Big T]

Try cleaning the vent on the top of the motor and the hose going to the airbox
The leak could be from excess crankcase pressure

[DomsKat550]

Ok thanks for info, everything gets better the more I ride it so maybe this will too, I installed a new hose when I adjusted my valve clearance,