Oil in spark plug cavities

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Perk - 08 Jun 2006 04:13 GMT

Hi all,

I recently (last week) bought a 1990 740 GLE wagon with the 16 Valve DOC
engine and 112K miles. I'm gradually checking things over.

Facts:

1. It runs very well and the first tank of gas showed 22.4 mpg. (I
realize that it takes several tanks to find an "average".
2. It passed it's licensing emissions test in Seattle in April with no
problem.
3. After the first tank I looked at the air filter and found that it
was almost impossible to see daylight through it. Replaced it
immediately. hopefully that will help the economy.

So much for all that.

Today I decided to have a look at the plugs. What I found was liquid oil
in the cavity surrounding the plugs. Number 1 had the most (enough that
I was able to suck it out with a small (1/4") neoprene hose. Number 2
had much less and the others even less.

Possible sources ?

    1. I feel that there's too much oil in the engine to begin with, it's
above the line.

    2. Could it be a leaking valve cover gasket ?

All the best,

Perk (:>)

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Note --- My real email is perkatwavecabledotcom

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Michael Cerkowski - 08 Jun 2006 05:18 GMT

I don't know a lot about the 16 valve engine, but I do
know that they are more likely to leak oil from the top
end than the 8 valve engines. Check around the distributor
drive, if that's up top. Hopefully someone with actual
experience with that engine will fill you in.

Oh, and make sure the flame trap is clear. See the
attached text file.

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Boris Mohar - 08 Jun 2006 13:04 GMT

>Hi all,
>
[quoted text clipped - 28 lines]
>
>Perk (:>)

It could be that previous owner spilled some when adding oil.

Regards,

Boris Mohar

Got Knock? - see:
Viatrack Printed Circuit Designs (among other things) http://www.viatrack.ca

void _-void-_ in the obvious place

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austjeremy@hotmail.com - 09 Jun 2006 23:51 GMT

Have you seen this topic "Oil seepage on 16 valve Volvo motor..."
Here is the conversation:

Greeings All,

I have an '89 Volvo 740 GLE (16 valve head) that is seeping oil
into
the plug valleys. Some cylinders are worse than others but all are
exhibiting some seepage. The oil doesn't seem to be coming from the
valve cover gasket but from another seam that is half-way down the
hole to the plug. I don't have a decent book for the engine so I
really can't figure out what this seam represents; is it part of the
valve cover assembly or is it part of the head itself? Any help on
this matter is greatly appreciated. Thanks in advance.

Ray Dzurney
r...@ix.netcom.com

Reply:

It is the cover , it's actually the top seals at the tops of the plug
tubes
remove the cover to replace.

Email: "Jack Stands." <dbrim...@ozemail.com.au>

> Hi all,
>
[quoted text clipped - 28 lines]
>
> Perk (:>)

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