Cylinder Head Problems???
20-02-2008, 05:54 PM
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Cylinder Head Problems???
Hi All,
I have a slight concern over my cylinder head on my Escort.
I was doing some general maintenance on the car, and was changing the spark plugs.
After i removed them all, No. 1 plug was black with soot compared to the rest.
Strange I thought, so I had a look inside the plug hole - after removing the rocker cover.
When I shined a torch into the plug hole, I could see my reflection. Some how oil is getting into the chamber and collecting on top of the piston, roughly 3mm of oil in total
So what could it be as the oil only comes when the car is stood, doesn't blue smoke and runs fine when warm - but does use some oil on a hard run.
I also checked the other chambers to find that they where slightly damp with oil.
So what could it be?? Valve guides? Seals or worse the piston rings (but that would create blue smoke so I'm ruling it out)
Any info - exploded diagrams etc would be greatly received as I would like to solve this problem before it gets beyond hope.
Many Thanks
I have a slight concern over my cylinder head on my Escort.
I was doing some general maintenance on the car, and was changing the spark plugs.
After i removed them all, No. 1 plug was black with soot compared to the rest.
Strange I thought, so I had a look inside the plug hole - after removing the rocker cover.
When I shined a torch into the plug hole, I could see my reflection. Some how oil is getting into the chamber and collecting on top of the piston, roughly 3mm of oil in total
So what could it be as the oil only comes when the car is stood, doesn't blue smoke and runs fine when warm - but does use some oil on a hard run.
I also checked the other chambers to find that they where slightly damp with oil.
So what could it be?? Valve guides? Seals or worse the piston rings (but that would create blue smoke so I'm ruling it out)
Any info - exploded diagrams etc would be greatly received as I would like to solve this problem before it gets beyond hope.
Many Thanks
20-02-2008, 06:40 PM
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Valve stem oil seals I'd of thought. If you get blue smoke when it starts from cold or when its been stood for a while. Could be the Valve guides but it would smoke a lot all the time I'd imagine.
20-02-2008, 07:42 PM
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I would have a look before you actually remove the plug.
that much oil would cause a lot of smoke, its more likely your rocker cover gasket has gone & oil has been collecting around the plugs. when you've removed the plug the oil has dropped into the cylinder
that much oil would cause a lot of smoke, its more likely your rocker cover gasket has gone & oil has been collecting around the plugs. when you've removed the plug the oil has dropped into the cylinder
20-02-2008, 07:59 PM
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Its was a new rocker gasket only a couple of hundred miles ago as I had the rocker cover revamped.
The area where the spark plug lives in the cylinder head is complete dry and free of oil, so that rules out the gasket, also the plug was dry, on the spark end is black and sooty
The area where the spark plug lives in the cylinder head is complete dry and free of oil, so that rules out the gasket, also the plug was dry, on the spark end is black and sooty
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