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doclees



Member Since: 24 Jun 2015
Location: PA
Posts: 672

United States 2004 Range Rover HSE 4.4 V8 Java Black
Oil Filter not draining down

Somewhere I found that if when doing an oil change and the oil filter housing remains full of oil there is a simple cause and fix to this. Anyone know this problem and fix?

Post #440932 8th Jun 2017 2:13am
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RRPhil



Member Since: 22 Aug 2011
Location: Blackburn, Lancashire
Posts: 908

United Kingdom 

There’s an anti-drain back valve fitted at the bottom of the oil filter housing that ensures it, and its pipework, doesn’t need filling each time the engine is started (delaying the oil flow to the engine).

As the filter cap is unscrewed, drawing up the filter element with it, the valve should open and allow the oil in the filter housing & associated pipework to drain back down into the sump.

Is the filter housing still full of oil even though the filter element has been removed?

Phil

Post #441037 8th Jun 2017 11:56pm
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doclees



Member Since: 24 Jun 2015
Location: PA
Posts: 672

United States 2004 Range Rover HSE 4.4 V8 Java Black

Thanks Phil. Yes I know there is a check valve that is supposed to open when you open the housing. Once I get the filter cartridge up about half way it drains slowly. It used to drain just by getting the cap off. I change the filter every 3k miles. Last 2 times it held oil and ran over the housing sides. So not sure if the filter isn't coming up when unscrewing the cap allowing the valve to open or the valve is stuck/clogged. I do know the filter is a rather snug fit. I'm due to change it again and want to be prepared. First time I thought it was just a one time event.

As the filter housing internals are covered in oil I was hoping for some idea what to observe once the filter is out.

Post #441038 9th Jun 2017 3:03am
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doclees



Member Since: 24 Jun 2015
Location: PA
Posts: 672

United States 2004 Range Rover HSE 4.4 V8 Java Black

Resolved. Seems that the oil filters were just not staying locked on the housing cap when removing. This last one stayed on the cap and it had drained fine.

Post #441598 15th Jun 2017 2:04pm
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