Does my motor sound normal? Engine sounds..... knocky. but there is an old fuel pump at the back not doing anything as it has an electric pump. As its my first VW air cooled motor Im not sure how rattly they are supposed to sound. I am thinking the oil I used may be too thin but it's supposed to be a newly rebuilt motor but I put in castrol magnatec 10w40. Dunno, not much I can do except drive it and fix it really.