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The valve holds the oil in the filter preventing it from running dry when sitting for long periods of time.

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14y ago

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How does oil filter contains a check valve works?

The bypass valve in an oil filter allows the oil to bypass the filter if the filter becomes clogged. Some filters also have an anti-drain back valve when the filter is mounted in such a way as the oil could drain out of the filter. This valve prevents the oil from running back into the engine out of the filter which would cause the engine to be started with an empty filter every time.


What is the purpose of a bypass valve on an engine oil filter?

When you start your car on a very cold day, your oil is quite thick and can't flow thru your filter. Your bypass valve opens up and lets the oil pass by until the engine has warmed up and the oil has thinned out a little. Also, if you haven't changed your oil filter for a long time and it is now completely plugged up, the bypass valve open up to let the oil go thru.


Is it true that a pressure relief valve located inside the oil filter is designed to limit engine oil pressure?

No. The pressure relief valve is part of the pump. The oil filter has a built in bypass valve. It is for if the filter media gets plugged the valve opens and oil still circulates.


Where is the oil pressure relief valve BMW 318?

oil pressure relief valve is usually located in the oil filter housing as a failsafe for if the oil filter blocks up.


Oil is going through cooler but stopping at the filter?

The filter, or filter bypass valve is clogged, replace the filter and then the valve; if the filter replacement does not fix it. (NOTE: Some cars have the bypass filters in the oil filter, others do not)


What is by pass oil filter?

A bypass oil filter has a valve in it. When the filter media plugs up, the valve open and the oil bypasses the oil filter. It prevents extreme pressure buildup in the oil filter that could blow out the media. Also, many engines use a bypass oil filtration system where only a portion of the oil goes through the filter at any time. All the oil eventually gets filtered.


Where is the oil release valve on a 2001 Ford Expedition?

its in the oil filter housing


Where is the PCV valve on a 1987 Nissan hardbody Pickup Z24i engine?

On a 1987 Nissan Hardbody Pickup, the PCV valve is located between the alternator and the oil filter. The valve can be seen when the oil filter has been removed.


I seem to have excessive oil pressurewhich causes oil to blow out around the oil filter What would cause this?

Some oil filters have a check valve in them. Perhaps you have the wrong filter on the car? Your car may not take the filter with the check valve. Also check to see if someone who did the oil change didn't leave the old oil filter rubber ring on the housing and then installed the new filter on top.


Can a car have a oil leak from the oil filter housing and from a valve cover gasket?

Yes


Where is the PCV valve on a 1990 Nissan truck?

Behind the oil filter. I went in through the wheel well and had to remove the oil filter.


Oil filter on 2006 Toyota Tacoma sits in a cup When changing filter how do you keep the oil from the filter from accumulating in the surrounding cup?

A little oil will drop into the cup when you remove the used filter. There is a black drain valve under the oil filter cup. You can remove the drain valve cover and let the small amount of oil drain into a cup. Wipe the cup clean before you install the new filter.