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Join Date: Jul 2012
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Oil Leak. Pooling!!!

Hello,
My 86 928S has been leaving half dollar size oil spots on the floor when parked overnight for some time.
I've traced the source to somewhere on top of the engine, under the induction system.
I can see oil "pooling" up there when I look thru with a flashlight. Mainly in the front area of the engine behind the water inlets.
The oil then finds its way (Spashes?) down the front of the engine and drips on the floor.
An thoughts on what it might be, or take to fix this would be greatly appreciated.

Thank you, Dave
Old 08-20-2012, 06:46 PM
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Lots of seals and hose up there. I would look into the oil filler/separator seals and hoses coming off it. I think there's way too potential sources for anyone to give any accurate info with out looking at it
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Old 08-20-2012, 06:52 PM
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Time for an Intake Refresh.
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Old 08-20-2012, 08:10 PM
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928: Serial Enabler
 
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What Dano said.

Crankcase breather hose at base of oil filler, behind water bridge, is the frontmost one of two connecting to pass cam cover.
That hose turns to mush, usually breaking down where you can't see, then it sprays oil over the engine and/or fills the cavities on front of block with oil.

The other crankcase breather hose suffers a similar fate.

Intake refresh time. Replace all the rubber bits includng throttle body studs that look like mini motor mounts.

Like Pete says, not possible to tell for sure, but the hose has been mush on every original 85 and 86 I've touched. Post some good pictures and we'll tell you all that is wrong with it, but get your notepad and checkbook ready.
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Old 08-20-2012, 08:15 PM
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Thanks for the insight.
Is there a kit available for the intake refresh? Gaskets, hoses, rubber bits etc?
Or must parts be ordered individually?

Thanks again, Dave
Old 08-21-2012, 07:59 PM
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928: Serial Enabler
 
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Nice.

A couple engine compartment shots though would help us gauge the condition.

There is not really a kit of parts, but we can make you a pretty comprehensive list right here in this thread.

The most crucial items include the fuel lines.

So many 928's have burnt due to the hidden decay of the fuel lines. (944 and 951 also)
Burnt, as-in "instant, raging and ustoppable fire"
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84,85,86 928 cars

Last edited by Landseer; 08-22-2012 at 12:16 AM..
Old 08-22-2012, 12:05 AM
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I think Roger at 928sRus has a comprehensive list for an intake refresh.
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Old 08-22-2012, 08:54 AM
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928: Serial Enabler
 
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Probably can rattle it off, top of mind.

And Mike Frye did a write up that's pretty good.
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Old 08-22-2012, 07:09 PM
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Ok, You guys are great. I thought I was all alone with this car. (My 3rd 928)
Here are some photos of the oil pooling and mess.
Thank you,



Old 08-23-2012, 12:57 PM
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I think I found It!!!
Passenger side hose coming off the base of the oil filler neck is craked almost in two.
So, can you tell me what it takes to replace this hose?
If I can do it without a complete intake refresh, that would be great as i'd like to put the money towards replacing the fuel lines as cautioned above by landseer. Although I carry a fire extinguisher in the car, I don't think it would stop a raging inferno.
Thanks again for all the support. This is great!!!
Old 08-23-2012, 01:41 PM
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A couple more quick questions please:
Is there any harm with driving the car other than it is still leaking and making a mess?
Can I minimize the leakage while driving by keeping the rev's down?
I couldn't find the engine breather hoses on Pelicans. Are they available on their site?

Thanks again, Dave
Old 08-24-2012, 10:40 AM
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928: Serial Enabler
 
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It makes a mess, but it can be driven ok.
Fuel lines are the bigger question.
Honestly, those of us that know these cars park them until that is done.
With 928 you really want to buy parts from people who can definitively identify relevant part numbers from a general description of what you need. If Pelican can do that, you won't need to see the listing on a site.

I'll try to find the part numbers for you from my old records.
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Last edited by Landseer; 08-24-2012 at 06:45 PM..
Old 08-24-2012, 06:38 PM
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Old 08-24-2012, 06:38 PM
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