Re: Valve clearance adjustment Mercury 3 litre 135 HP 2002
Are we talking about a Mercury 3 litre outboard, or an IO? If an IO, there is no clearance adjustent you would do with a feeler gauge, Being a 2002, I would be really wondering why hydraulic lifters are getting noisy. Have you checked the oil? Is it over full? Has it been changed lately? When and how did it start making noise.
Something just doesn't sound right.