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Drmc911
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928 Engine oil leak....
I just picked up a 1978, 928 and upon cleaning the engine, then letting it run for a couple of minutes to dry off, I found that it has an oil leak somewhere on the top of the engine, if you look down it what could be considered the valley you can see the oil, I also had oil in the air cleaner, does anyone have an idea of where it could be coming from???
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09-12-2013, 01:59 PM
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Moderator
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You actually were able to clean the valley without removing the intake spider? Your 78 is due for an Intake Refesh which includes replacing "all" the rubber hoses.
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1981 Porsche 928 "Euro" Auto Gunsmoke Metallic Flat - Black Interior 1983 Porsche 928S "US" Auto Light Bronze (Copper) Metallic - Brown Interior **SOLD** 
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09-12-2013, 02:34 PM
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Registered User
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My 84 had a similar leak..... Check the oil filler gasket, mine was torn
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1984 red 928S Undergoing surgery
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09-12-2013, 03:19 PM
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Drmc911
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oil leak
Does anyone have a kit for this?? sorry for the questions just new to this type of engine
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09-12-2013, 03:47 PM
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Registered User
Join Date: Mar 2013
Location: DeWinton, AB
Posts: 72
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can you confirm you have a leak - or just 30 yrs of the oil spillage from oil fills? This oil spillage will end up in the valley and this oil is very difficult to get out without some disassembly. Obvious leak point is as mentioned - bottom of the oil filler neck. I do not know about 78, but my 86 has no gasket - has a steel plate with rubber ring. you can try tightening it first?
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Steve 86 928 Euro 5 sp Red/Blk 63 E-type, 63 Valiant 12 MB C63, 12 MB ML350 |
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09-12-2013, 03:56 PM
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Drmc911
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Oil Leak
I was able to confirm there was a leak, I cleaned it all up with oil adsorbent matt and found water and oil. I then started the car ran it for about 30 min, checked it again and it was covered in oil again, no water.
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09-12-2013, 04:00 PM
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Petie3rd
Join Date: Jul 2000
Location: Philly PA
Posts: 4,528
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you could tighten the oil fill mounting bolts ,
remove the oil fill cover and screen look down the tube and you will see a bolt 10mm, tighten this one , and the one on the other edge of the fill tube, this is closer to the right side of the car
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^^^ Stan ^^^ 2019 BMW K1250 GS 2016 HD RK 1988 S4 Auto , Elfenbein Perlglanz, Pearl Gray 1982 5sp Met black and tan sport seats |
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09-12-2013, 04:58 PM
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Registered User
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If tightening the bolts don't fix the leak, you will need to replace the paper gasket between the Filler and the block... like I said previously I just replaced mine and in order to remove the filler neck you first need to remove the waterbridge....
While you have these parts off, I would recommend you do a complete top end refresh...
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1984 red 928S Undergoing surgery
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09-12-2013, 05:26 PM
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Registered
Join Date: Mar 2010
Location: Texas
Posts: 2,139
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Quote:
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John Curry (Drift King) 928OC member Grand Prix White 1994 GTS AT (The GTS) Black 1989 GT (The GT) and Cobalt Blue 1989 S4 AT (The Blue Car) 1986 Euro AT Indishrot 1984 Euro S AT (The Stepson) and Black Metallic 1984 Euro S 5 speed (The Schwartz) |
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09-12-2013, 09:39 PM
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Registered User
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Quote:
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1984 red 928S Undergoing surgery
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09-13-2013, 04:53 AM
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Petie3rd
Join Date: Jul 2000
Location: Philly PA
Posts: 4,528
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the upside to making an intake refresh out of an oil leak,
is that the car will be good for another 25 years, so all you have to do is drive it
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^^^ Stan ^^^ 2019 BMW K1250 GS 2016 HD RK 1988 S4 Auto , Elfenbein Perlglanz, Pearl Gray 1982 5sp Met black and tan sport seats |
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09-13-2013, 09:58 AM
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Moderator
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See Post #2 ^^
The only kit you'll find is the vacuum hoses kit made by Carl at 928 Motorsports, but there is much more than that involved. "ALL" Rubber needs to be replaced, O-Rings, etc. Don't remember any gaskets, but it's been awhile. Plus I like Red RTV as nothing get's past that, even oil  ...then while you got the Intake apart, get to all your rubber fuel hoses as well. There's a write up in the "Common Fixes" Thread.
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1981 Porsche 928 "Euro" Auto Gunsmoke Metallic Flat - Black Interior 1983 Porsche 928S "US" Auto Light Bronze (Copper) Metallic - Brown Interior **SOLD**
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09-13-2013, 10:14 AM
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1985 Porsche 928s
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I think the thing with 928's is knowing when to stop. The phrase "I might as well do this too while I'm at it" will get you in pretty deep before you know it. Take notes & pictures as you go. |
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09-16-2013, 11:28 AM
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Network Native
Join Date: Jan 2007
Location: SoCal
Posts: 10,349
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WYAIT, while your already in there.
928srus and 928intl both with www and .com are good about putting together complete kits, and even better extra complete kits with more stuff than you are likely to use, but all the stuff you might use, and then accepting anything back you don't use. |
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09-16-2013, 10:36 PM
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Petie3rd
Join Date: Jul 2000
Location: Philly PA
Posts: 4,528
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to reseal the oil fill tube to the block,
I would suggest to use Hondabond 4 its better than the red RTV , use a generous amount and it should never leak
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^^^ Stan ^^^ 2019 BMW K1250 GS 2016 HD RK 1988 S4 Auto , Elfenbein Perlglanz, Pearl Gray 1982 5sp Met black and tan sport seats |
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09-17-2013, 05:51 AM
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Big Red
