Windstar :: 1998 - Oil / Moisture In Throttle Body And Air Duct Hose


Feb 22, 2008

I have a great running 98 Windstar. It does not overheat. The oil looks like it needs to be changed but it is not Coffee Colored, as the picture. The PCV valve looks clean, and rattles. I replaced the small 2 inch hose at the PCV valve on the back valve cover since it looked weak in the middle and may have been collapsing. I no longer get the big puddles of OIL/WATER on the ground, that I use to. I cleaned the oil/water out of the Intake Hose of the Throttle Body, but I still see some of the mixture underneath the Air Instake hose after a long drive.

I will go by the Ford dealer and buy another PCV valve, and replace the small curved hose going to the top of the engine near the Throttle Body that the other end of the PCV connects. Someone suggested that this could be cracked, and it does have some small cracks in it at the bend.

I have read that the 99-00 had a design problem with the Valve Cover, and it allowed oil to be sucked out and give similar problem. But since this is a 98, I am just looking for pinched hoses, or leaks. Car runs great, and hoping that I can find the reason that oil is being sucked into the air intake.

Do I have it correct that during normal operation, that the moisture and gases are sucked up out of the engine thru the PCV and into the top of the engine. And that the other Valve cover hose is going in the other direction or from the throttle body to the Valve cover?

Just trying to determine if the oil/moisture mixture is coming from the front or rear (PCV) valve cover. Getting no codes on the engine.

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