08-04-2019, 10:14 AM
Stop using and investigate. It's a bit hard to advise with so little info - for example do you have a 2 or 3 bearing engine? Original crank or new? Splash or pressure feed? Is it noisy under load, at speed, on overrun, at idle?
I'd start with things which are easy to check ( e.g. general inspection, oil level, tappet clearances) and go deeper as necessary.
I'd start with things which are easy to check ( e.g. general inspection, oil level, tappet clearances) and go deeper as necessary.