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Zetec Valve Query
FrankP - 11/1/10 at 08:20 PM

Hi,

I have taken the head off of the zetec engine now. I have removed the cam shafts.

I am assuming that once the cam shafts are removed all the valves should be closed?

So if I can see one of the valves open I have a problem?

Cheers

Frank


fatbaldbloke - 11/1/10 at 08:22 PM

In a word ...Yes


Davegtst - 11/1/10 at 08:24 PM

Yes, bent maybe?


Danozeman - 11/1/10 at 08:27 PM

Yep either bent or stuck.


will121 - 11/1/10 at 08:36 PM

was it previously running? could be a broken valve spring as well as all the above, have you got the tappets out?


austin man - 11/1/10 at 09:53 PM

any visible damage to the piston or cylinder bore ?

I am aware that you mentioned the belt slipping in a previous post I would guess a bent valve


Davegtst - 11/1/10 at 10:42 PM

If the belt slipped and the timing was out the valve will be bent. Last one i fixed up snapped the head off a valve and smashed it through the piston, this was done at cranking speed aswell.




[Edited on 11/1/10 by Davegtst]


[Edited on 11/1/10 by Davegtst]

[Edited on 11/1/10 by Davegtst]


fatbaldbloke - 11/1/10 at 11:20 PM

Frank - for what it's worth, as I can't remember what Zetec you're running, I think I have a used but OK 2 litre silvertop head that needs a bit of a clean but was running OK when I took it off my car a couple of years ago. You can have it for a bottle of wine or two if it's of any use. As I recall it has all the cam bearing caps etc but probably not the tappets (hydraulic type) - can't actually look right now as it's in my store a couple of miles away.
Cheers, Ian.

[Edited on 11/1/10 by fatbaldbloke]