gurgling noise

[poorsche]

With engine running at idle there is a gurgling sound coming from inside engine compartment but haven't sourced it yet. I thought I remembered someone posting the source of these sounds.

Joseph
'86 T-look

[Zendalar]

Believe it or not, the sound (gurgling) may come from the oil filter. Seen and heard it once, the filter was somehow faulty, changed that and the noise went away.

[GIBSON]

It can also be the sound of oil moving through the oil cooler lines to the front oil cooler, I used to hear it regularly on my 79 SC, really drove me crazy until I figured out what it was.

Bruce Herrmann
73911S

[john walker's workshop]

fram oil filters are the usual culprit.

[adamnitti]

Hey, John-

Is there something I don't know about Fram filters? I've been using them since I started driving on most of my daily drivers and never had a problem. (That's a lot of filters!) Do they use some sort of inferior design or something on the P-car versions? I've never used on one my Porsche before, but now you've got me curious-

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Adam Nitti
ajnitti@mindspring.com
www.adamnitti.com
'85 911 Carrera Coupe
PCA member, Peachstate region

[poorsche]

I've only been using the Mahle brand oil filters. Could it be a vacuum leak?

Joseph
'86 T-look

[john walker's workshop]

i don't know why they tend to gurgle, but i've heard it a lot. when replaced with a mahle it goes away. heard some say it was a check valve problem, but i don't see any in there.

[Superman]

I put a Fram on my car and it gurgled loudly. I very quickly installed the Mahle and have not heard the noise since.

If you could hold the two filters in your hands, I suspect you'd see the difference. The Mahle is actually pretty impressive, and I think I saw a check valve in it.

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'83 SC