964Patrick

Hi all,

After a pretty embarrassing oil overfill about two months ago , I'm having some trouble again.

When starting cold, after some 5 seconds loud gurgling noises are coming from the right side rear. Can only be heard from the inside. It sounds like the oil gurgling, but much, MUCH louder than normal. Sometimes the noise is preceded with a metallic-like squeaking sound (Might also be a belt squeak, not sure. Lasts a few seconds). After a few minutes, the gurgling noise goes away.

Something else that caught my attention is that the oil pressure is elevated. Running idle, it doesn't go below 3 bar, which is very unusual.

I don't think the overfill (fixed by my tech) and this problem are related, because it developed later in time. However one never knows, so I thought I should mention it.

After some searching in past posts, I tentatively suspect the oil thermostat. I'm very curious to your opinion / experience. Some pointers on diagnosis would be welcome too.

Any help greatly appreciated. Thanks,

Patrick

Indycam

What does your oil temp gauge read ?

What oil do you have in the motor ?

altarchsa

Before I recently fixed two oil line leaks, my oil level got low and I noticed an oil gurgling sound, same 5 second timing, but mine was coming from what seemed like the rear blower area of the engine compartment. It was definitely an oil circulation noise. Stopped when I put the correct amount of oil in.

Are you sure you have enough oil now?

Meares

i have it as well........but, it's not THAT noticeable; it stops shortly after start.....i figured it was normal.....is it not?

964Patrick

I'll take her on a longer drive today, to get everything fully warmed up. Will check for noises, oil temp, oil level, oil pressure and report back here. Thanks for the replies so far.

Duck

I have the same issue lately. I hope it is not anything wrong. I cannot afford any more work on the car for a while.

meek

There was a very recent post on this gurgling noise on the 993 forum and the concensus was that it was normal. Tends to happen more when the engine/weather is cold. All part of the oil cooled character.

EDIT - here is the thread https://rennlist.com/forums/993-forum/413120-993-percolating-sound-on-warm-up.html

blitz928

+1 on that my old 1995 993 did the same thing. Oil traveling to the oil cooler, noise

buellrunner

Mines a gurgler too...Always has.

aeroman

The oil gurgling noise is to be expected. It's the tubes in the wheel well.

elbeee964

Startled me when I first drove my '85 Carrera ten years ago...

Now? It's just music to my ears. ( If it were a pet, that'd be a wagging tail, or a purr, in my mind.)

Crystal Cranks

No Gurgling would be worse at least it lets you know there is oil in the system. Just another one of the quirks of these cars.

Aeroman your avatar made me laugh.

newsboy

Got the same gurgling, more when the car sits for a few days, goes away with warm up.

Arrivare

Mine is the same as meek's. Very loud in Winter and hardly noticeable in Summer. I changed out the internals of the oil thermostat thinking that it was sticking in cold weather and it made no difference.

colo964

gurgling is normal (very noticable) - at least on mine. just for grins, check your power steering reservoir.