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Angry Oil leak! (when will the problems stop)

A couple of days ago I backed out the 924S and noticed a nice puddle of mobil 1 on my garage floor, I check the oil level it was a little low, I started the car and oil pressure jumped right up just fine. SO I inspected engine and found 3 things, Oil is comming from what looks like the d/s Balancing shaft, But I need to pull the manifold to be sure. Second I found a little puddle of oil on top of the waterpump??? This is weird I dont know how it got there or where it came from, any IDEAS???
The third thing I found was oil on the lower front timming cover, possable crank seal or oil pump seal??
Well anyway I spend $125 on new seal for my motor, gonna do a full front engine seal job and reseal the cam housing and both balancing shafts, If you guys have any hints or tips or anything let me know, THANX

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Old 05-04-2004, 04:55 AM
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well, to be fair, old Porsches leak oil... especially if you run synthetic...

however, it seems like your problem might need some attention
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Old 05-04-2004, 05:40 AM
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I start worrying when they don't leak. Sounds like camshaft seal to me.
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Old 05-04-2004, 10:04 AM
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That sounds very similar to what I just went through. I actually broke down the whole front three times trying to find the exact spot.

I STILL have a very very slight leak of unknown origin. leaking oil in the front seems to travel down, right and left no matter where it begins.
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Old 05-04-2004, 10:15 AM
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If you run "restore" or any other type of engine/seal conditioner for 100-300 miles and then do an oil change. Use 15w-50w or 20w-50w oil, Clean engine exterior and drive for 50 miles or so and check for leaks. You will probably note that your oil leak is gone. This is my personal experience with the 944 and 2-BMW's, 81 & 82 320i's with more the 250.000 miles on the engines.
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Old 05-04-2004, 10:32 AM
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Those additives are supposed to be a big no no for the 944's. Clog oil gullies.

Switching back to castrol gtx (80's best) and 20/50 might be a better temporary "fix"
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Old 05-04-2004, 12:40 PM
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Rather than band-aid the problem..
If you are leaking from the top seal, your belts are probably coated in oil and degrading. Check the belts. If it's time to replace them do the seals along with it. Throw in a water pump and thermostat and you have a healthy weekend project.

I disagree that synthetics cause leaks. The higher viscosity allows the oil to flow better, hence the drips on the floor. I've used Mobil1 for 6 stratight years without a problem. all the leaks I had were missed PM from a PO. - seals, oil cooler, oil pan gasket etc.
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Old 05-05-2004, 03:30 AM
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True. Mobil 1 will just make a leak possibly more apparent. This thread has made me think that I need to check the other (internal) cam housing bolts and give them a torque.
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Old 05-05-2004, 05:42 AM
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my mechanic who is a decent wrench, recently identified an oil leak in my car coming from the valve cover. He explained that no gasket set exists and the job is to be re sealed with gasketing silicones readily available.
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Old 05-05-2004, 07:44 AM
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PS I don't think synthetic materials have any effect on the presence of leaks. Our cars are old and need seal replacement and an understanding of their aging nature and the limitations of older technology. That said, it's always fun to spank the dayights out of a miata, eclipse or celica who needs a quick tutorial on the legend of the Porsche 944 and how damn fast we can corner with confidence.
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Old 05-05-2004, 07:49 AM
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Your mechanic is wrong. I replaced a leaky cam tower gasket a while back and its dry as a bone.

Synthetic oils tend to leak more because the particles in the oil are a lot more uniform than dino oil . So the larger clumps in dino oil will plug up small oil leaks.
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Old 05-05-2004, 12:23 PM
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From what I hear about synthetic is that it doesnt cause leaks, what happens is when someone is running regular oil for years a film builds up on the gaskets and seals them even better so if the gasket was leaking a little it wont be know because of the gunk that builds up on it, When you switch over to a synthetic, the cleaning agents clean off all the build up and blam a old worn gasket starts to leak.
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Old 05-05-2004, 12:42 PM
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hey silver thanks I'll look for that spot in the repair manual. Are you saying that the valve cover can't leak? Or that the leak you spoke of emulates a valve cover leak? Af
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Old 05-05-2004, 02:12 PM
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I have some oil leaks (particularly between the cam housing and head)...but theyre incredibly small...never any oil on the ground. So i just live with it.
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Old 05-05-2004, 03:35 PM
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I'm not leaving oil spots either, but I dislike the burning oil smell when it hits the exhaust manifold. I still think my mechanic could be right.
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Old 05-05-2004, 03:43 PM
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I think when you say valve cover you mean the cam-tower or cam-housing. Its the part that says Porsche. It has two gaskets. One is on the back for a little block-off plate, the other is the large one that goes between it and the head. Mine also leaked onto the exhaust causing a pretty bad smell. Pelican sells them both and they are pretty cheap. The only thing you have to worry about is removing the belt from the cam pully. I have an easy way of doing this without messing up the belt tension though.

Ed
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Old 05-06-2004, 02:26 AM
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Quote:
Originally posted by Ferrara_racing
my mechanic who is a decent wrench, recently identified an oil leak in my car coming from the valve cover. He explained that no gasket set exists and the job is to be re sealed with gasketing silicones readily available.

LOL!! I did about 3 Cam Housing Gasket changes on both 83 and 88 944 that I own. Find another mechanic. hehe!


It looks like this.

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Old 05-06-2004, 03:15 AM
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Thanks dudes, even if every one of your "helpful hints". The local Porsche dealer, once replaced my belts and when I got my car back it was leaking like the Exxon Valdeez. They charged me to replace the front oil seal they damaged in the first place. That was the last time I bent over for them.

The current mechanic did a great job on the waterpump, rollers and belts. Where I live it's tough to find a good wrench. I will admit though the photo of the gasket is very troubling, christ he should know about that!!!

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Old 05-06-2004, 04:07 AM
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