Please help me work out whether i need a new timing chain tensioner or whether i am suffering from 'pinking'. My old 300E sounds ever so slightly like a diesel when it starts but then quietens - except when up a hill and then a faint rattling can be heard. Is this the chain or is it pinking?
And can i reduce it just by putting in a particular grade oil? thicker? thinner?
thanks
MJ
And can i reduce it just by putting in a particular grade oil? thicker? thinner?
thanks
MJ
