6n2, 8 valve, petrol.

 

Just posting to let people know that this can happen it seems?!

 

Anybody else experienced this? Fault when engine at operating temp. I hunted down a high pitched whining noise - thought it was a bearing. Mechanics' stethoscope found end of oil filter to be noisiest point. I just thought the noise was originating somewhere else and finding it's way to the filter. After all - how could a filter make a noise? Does it have any moving parts? I read something about a bypass but didn't know if that was in the filter or the engine?

 

I remember when I originally put the last filter on I torqued it to 20 NM (as indicated on the side of the filter). I just think this is too much especially if you end up with too much oil on the seal. It just seemed to keep turning. Certainly 20 NM if far tighter than I can do by hand - given the amount of access there is. Wondered if it had started pulling the core of the filter out or something.

 

Oil change and filter done by hand and then further up to 16 NM. Noise seems completely gone! I'd left the noise for so long cos the oil change wasn't overly due and I just thought it can't actually be the filter. Oil looked no more dirty than usual. I took a video but I did a search and found something very similar from a BMW:  

 

 

Any one else come across this?

Edited 16 January, 20197 yr by cosaw
Corrections.

Assuming it is the metal filter, did the noise start on the day you screwed the filter on?

Hi, thanks for your input.

 

Yes, I should have made that clear, it's the all metal filter - not like the one in the video above.  That's the thing I really don't know if it happened from brand new unfortunately. I only picked up on the noise at a later date.  I'm thinking it wasn't on from new as I think I might have picked up on it sooner.  However, it was being masked a bit by the noise of a noisy power steering pump.  Noisy filter that came off looked fine from what I could see externally. I think it must have got noisier with age cos it stuck out like a sore thumb before I finally changed it.

never seen it before...see alot of stupidly tight filters though , nipped up tight by hand has always done me fine 

I took a video of mine so I'll see if I can upload it if I've got space and when I've got time. To be honest you can't get even one hand in to get much purchase on this engine cos all the exhaust manifold tightly fits around it. That being said, I've done hand tight in this situation with no problems in the past even with just one hand. Gonna keep a closer eye on this replacement this time.

Update with video.

 

This was when it was a bit quieter and my phone didn't pick it up great either - still, the high pitched noise is coming from the filter: 

 

http://www.cosaw.f2s.com/NotBackedUp/Oil_Filter_Noise.mp4

 

Filter and oil change and noise is gone.

Edited 24 January, 20197 yr by cosaw
Corrections.

As Steveo says, hand tight is tight enough - I suppose the problem with that is, someone will ask, "How tight is hand tight." 20 NM sounds way over the top to me.

The by-pass valve that you mention, is only intended to open when there is a large pressure differential on each side of it - intended really to open if the filter becomes blocked, but can also open briefly on a cold start up - by-passing the filter and allowing oil to circulate (better unfiltered oil than no oil at all!)

 

Regards

Thanks for the further details. Yes 20 NM sounds daft (especially once you've tried it!) but it's printed on the side and there is a 30 mm nut shape on the end for a socket. I think we're all agreed though!

Edited 3 February, 20197 yr by cosaw

15 hours ago, cosaw said:

Thanks for the further details. Yes 20 NM sounds daft (especially once you've tried it!) but it's printed on the side and there is a 30 mm nut shape on the end for a socket. I think we're all agreed though!

If you still have the old oil filter, poke a screw driver down the hole and see if you can feel the springiness of the bypass valve.

Gee, I didn't think to do a tear-down and not sure where the bypass valve would be. I usually keep the filter till I've done a cleanup and it's the last thing that goes but think I've got rid of it this time. Thanks all the same!