Home > categories > Mechanical Parts & Fabrication Services > Valves > How do I fix a knocking valve?
Question:

How do I fix a knocking valve?

Ive been tolding one or more of my valves is/are knocking, how can I fix this. Detail would be great, this is for a F0RD 460, from a 90. I was wondering if I can just buy some used heads(not sure if this comes with these things called valves, haha)but I can pick up some 460 heads, for pretty cheap.. on those and do a full swap, since mine is from 90 i dont know if year would matter. So how can I fix knocking valves., thanks

Answer:

Valve noise is usually caused by a bad hydraulic lifter, or a worn cam lobe, sometimes wear in the rocker arms also. I don't think changing the heads would help much in your case. I woud get a good mechanic to listen to it, and tell you first ok, because sometimes, just changing the oil and putting in an additive will stop noisy valves good luck
valves dont knock they tap and generally all you have to do is adjust the valve lash, but you may need new valve springs if those heads have alot of miles or were abused.

Share to: