Oil on spark plugs [ re. Plug Wires ]
b.benz at charter.net
Mon Nov 23 19:31:57 PST 2009
If the plugs were tight, had to be coming from the VC gasket. Check
your CC breather system.
On Nov 23, 2009, at 7:21 PM, Ben Swann wrote:
> 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
> -----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?
> 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
>> 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.
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