hi all just an update ive stripped the engine out cant find anything wrong so orderd new gaskets and seals im changing the fuel lines basicly renewing all the bits I can so hopefully all is ok.
hi all im new to this site and hopeing somone can help me rite here goes I have a 40 hp yam 1989 itsits loosing power I e not reving out I noticed the bottom plug was black and wet so I done a compresion test all cylinders are 135 psi its sperking very well so I thought petrol I cleaned carbs...
hi all I have a 40 hp yam 1989 the moter runs spot on on tick over but wen I open her up boat gets on the plane then the engine seems to lack power it dont rev out it s fine on half throttle give it any more then it wont rev no more this is wots been done all 3 compressions are 125 psi carbs...
hi all I have a 40 hp yam 1989 the moter runs spot on on tick over but wen I open her up boat gets on the plane then the engine seems to lack power it dont rev out it s fine on half throttle give it any more then it wont rev no more this is wots been done all 3 compressions are 125 psi carbs...