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oil problems
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Posted by: baric

I rebuilt my motor and now I have oil coming out of the headers and no oil coming up to the valve covers i did a compression check on all cylinders and there good so its not the rings. I cant figure out how the oil is coming out of the exhaust and also it seems like the block is creating to much pressure pushing the oil up through the block but how?

Posted by: Mustang5L5

describe coming out of the headers? Out of the exhaust? or leaking out from the heads?

Did you install the head gaskets right? Torque specs right? Did you touch the valve seals at all??

Posted by: Aussie XAXB

To add to the questions, do the lifters make a clacking noise?

Oil gets to the rockers by being pumped up through the pushrods by the lifters.

If you reused the pushrods did you clean them out before reinstalling them?

That's just in reference to no oil on top.

Oil in your headers is either getting there through the head gasket leaking or bad valve seals, or even the PCV system not working. If the PCV system is not working the block can pressurize and push oil into the cylinders.

A worse case scenario is a cracked head.

Are your sparkplugs getting oil fouled?

Steve

Posted by: baric

Quote:

Originally Posted by Aussie XAXB

To add to the questions, do the lifters make a clacking noise?

Oil gets to the rockers by being pumped up through the pushrods by the lifters.

If you reused the pushrods did you clean them out before reinstalling them?

That's just in reference to no oil on top.

Oil in your headers is either getting there through the head gasket leaking or bad valve seals, or even the PCV system not working. If the PCV system is not working the block can pressurize and push oil into the cylinders.

A worse case scenario is a cracked head.

Are your sparkplugs getting oil fouled?

Steve

I put hardened pushrods and new roller rockers and the heads are brand new GT 40 heads I did not notice any cracks. as far as the sparkplugs they are getting oil fouled. How do you know if there are bad valve seals and how do you fix it, and same with the PCV system how do you check it and fix it.

Posted by: Aussie XAXB

With new heads I would not sweat the valve seals. Cracks would also only be for old heads.

You check the PCV valve by pulling it out of the valve cover with the engine running and placing your finger over the bottom, blocking the suction, then removing it. You should feel a good amount of vacuum. Shut off the engine. Remove the vacuum hose from the valve and shake the valve. You should hear the "stopper" flopping back and forth. This is not an exact science though. For the price of a PCV valve, if you have not replaced it in some years it doesn't hurt to do so. Also check your breather to make sure it is not clogged.

If the problem is not with your PCV system I would fear something is not quite right with the head gaskets. The reason I say that is because the only other way for oil to get into the exhaust port or cylinder is through a leak between the head and block. Your new heads with new valve seals should not be a problem. If you are losing pressure at the head/block juncture that would explain a reduction of pressure to the lifters and a shortage of oil to the rockers.

If anyone else has any ideas I am open to suggestions.

Steve

Posted by: baric

Hey steve I appreciate all your help ill look in to it and give you some feedback.

thanx

Posted by: bullitt5177

Depending on the head and the manufacturer, you may want to check the head. Carelessness is all too common, especially with something so specific. I'd run a quick compression test on them just to be safe. Make sure the valves are seating correctly as well. Go with Steve's suggestions first though, as he's a genius and his stuff is simple enough to check, but I just thought I may give you a quick suggestion.