Hi all..
Just recently finished putting my 2.0 zetec back in the car and fitted the megasquirt and fired her up.... And it sounds like death. Imagine extremely loud tappets!
I had new je pistons, pins, rings and a rebore from specialised engines. They told me the crank, and rods were fine so I fitted new std size acl and glyco bearings throughout along with a new oil pump and seals.

Anyway I got that noise and thought it sounded like it was coming from the head so I bought another head and refitted it and it was the same.
Couldn't see any signs of the valves hitting the piston on either part.

Looking like the engine will need to come out, so looking for any ideas from anyone who may have heard this before.

Here's the video..