Oil on spark plugs [ re. Plug Wires ]

[Bernie Benz]

My point is one replaces them because they leak, not because they are  
brittle, which one won’t know about until you’re into it. I’ve reused  
old intact gaskets with Si caulk on each side, still going. But most  
often I just replace the flat gasket portions with Si caulk.

Bernie


On Nov 25, 2009, at 1:45 AM, <alancordeiro at att.net> wrote:

> Bernie,
>
> Brittleness is significant !!!
>
> When I replaced my gasket three years ago, it resembled crumbling  
> plastic. Originally when I started getting oil in the top of my  
> plug chambers, I tried tightening all the valve cover bolts. This  
> seemed to make a small difference in the amount, but the oil  
> leakage continued, and continued to get worse over time.
>
> I also found that the two plug chambers  filled with oil were the  
> most likely to get fouled plugs...whereas previously the plugs  
> could go forever.....
>
> Alan
>
> ----- Original Message ----- From: "Bernie Benz" <b.benz at charter.net>
> To: "John Lagnese" <jlagnese at massed.net>
> Cc: "200q20V mailing list" <200q20v at audifans.com>
> Sent: Monday, November 23, 2009 11:38 PM
> Subject: Re: Oil on spark plugs [ re. Plug Wires ]
>
>
>> Is brittleness significant? I think not. Maybejust lost all of its
>> applied compressive clamping force.
>>
>> Bernie
>>
>>
>> On Nov 23, 2009, at 8:29 PM, John Lagnese wrote:
>>
>>> That gasket must be quite brittle.
>>>
>>> -----Original Message-----
>>> From: 200q20v-bounces at audifans.com [mailto:200q20v-
>>> bounces at audifans.com] On
>>> Behalf Of Ben Swann
>>> Sent: Monday, November 23, 2009 10:21 PM
>>> To: 'Bernie Benz'
>>> Cc: '200q20V mailing list'
>>> Subject: Oil on spark plugs [ re. Plug Wires ]
>>>
>>>
>>> I found oil in several of the spark plug holes when I removed the
>>> wires.
>>> When I removed
>>> the plugs, there was a generous coating of oil on the threads and
>>> plug in
>>> general.  I
>>> don't know if the oil was from the hole or actually from inside the
>>> combustion chamber.
>>>
>>> From my best guess, the oil came in through the valve cover gaskets
>>> round
>>> rubber rings
>>> that separate the cam cover from the head.  I had been running 3
>>> bar since
>>> last fall and
>>> up to 25 PSI prior, so perhaps there is additional pressure getting
>>> in the
>>> cam cover.
>>>
>>> The engine had developed a miss that at first was barely  
>>> noticable and
>>> progressed to
>>> generally poor driveability overall. The cleanup of oil and plug
>>> swap has
>>> engine running
>>> great again.
>>>
>>> I am wondering if this is typical  - engine has about 140k miles on
>>> original
>>> valve cover
>>> gasket.
>>>
>>> Ben
>>>
>>> -----Original Message-----
>>> From: Bernie Benz [mailto:b.benz at charter.net]
>>> Sent: Monday, November 23, 2009 10:11 PM
>>> To: Ben Swann
>>> Cc: 200q20V mailing list
>>> Subject: Re: Plug Wires
>>>
>>> Oil getting in where?
>>>
>>> Bernie
>>>
>>>
>>> On Nov 23, 2009, at 4:16 PM, Ben Swann wrote:
>>>
>>>> FYI - thought I had scored the "deal", but as kind of expected, the
>>>> wires I received were for a 10V.  Still a good buy, but I did not
>>>> need
>>>> another new set of these. Might have one set to sell.  I'll  
>>>> probably
>>>> just return since wires do not appear to be bad.
>>>>
>>>> The rotors also were incorrect - I think we expected that.
>>>>
>>>> Plugs are right on - not the original Bosch, but these look  
>>>> every bit
>>>> as good and I had NKG similar ones before.  I found a lot of oil
>>>> around several plug wires, and electrodes coated with oil,
>>>> cleaning up
>>>> the old plugs  did the trick to get rid of hesitation problem I  
>>>> had,
>>>> but installed the new ones.
>>>>
>>>> Should be correct cap, but was sent in separate shipment, so don't
>>>> know yet.
>>>>
>>>> Also, I failed to mention the order was from RockAuto.com
>>>>
>>>> Now I need to figure out why so much oil is getting in there - I
>>>> suspect coming through the valve cover gasket.
>>>>
>>>> Ben
>>>
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