engine knocking

[mckid]

I just picked up a 94 warrior, its in excellent shape body wise and stills run fairly good. But notice that when its starts up there is a loud knocking untill it warms up and then its not so loud. Any thoughts as to what exactly it is?

 

[yamarider]

Hard to say without actually hearing it. I'm thinking rod bearings, crank bearings, or bad piston slap. Can you tell if it's coming from the bottom end or the cylinder?

 

[mckid]

Sounds more like the top end, its old and the guy before me ran it hard he said. I bought becuase he was hurting for the cash, it also has an oil leak in the top of the head? So probably do a top end rebuild?

 

[yamarider]

Yeah, i'd say do a top end rebuild. When you have it apart check the rod and crank bearings for free play.

 

[mckid]

thanks for the info, i still runs somewhat stong it keeps up pretty good to my 350 raptor but couldnt pass up the deal. So if i have to put some into it to then no big deal!