2004 volvo s40 2.4 makes a strange whistling sound around the oil system
the sound starts when my s40 warms-up.....when i remove the deep stick, air pressure
comes out and the sound goes off but when i replace the dipstick, the sound starts again
Inspect your PCV valve, it might be clogged making the system see more pressure.
will try tht Tom
Helo Tom..The Oil filter housing and the pcv valve, are they the same thing?
How do i access the pcv valve?
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