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ZUKIWORLD Discussion Forum => Suzuki 4x4 Forum => Topic started by: Carnage on May 07, 2008, 10:02:16 PM

Title: Sparkplugs + Oil?
Post by: Carnage on May 07, 2008, 10:02:16 PM

Pulled a plug off the top of one of the sparkplugs and theres oil in there?

Its running fine but what does that mean?

Title: Re: Sparkplugs + Oil?
Post by: aaron74 on May 07, 2008, 11:55:18 PM

leaky rocker cover gasket? check you valve lash recently? ... if not, might be time to do so.

Title: Re: Sparkplugs + Oil?
Post by: Rhinoman on May 08, 2008, 04:32:34 AM

Oil in the cylinder is usually either bad rings or bad valve seals. I'd do a compression test.

Title: Re: Sparkplugs + Oil?
Post by: pepatt on May 08, 2008, 05:59:52 AM

Do you mean there's oil on the top (exterior of the plug), or on the business end?

If it's the top, you have a leaking valve cover gasket. If it's on the electrode you've got other issues, and you're probably seeing a lot of blue smoke. That's rings.

Title: Re: Sparkplugs + Oil?
Post by: Carnage on May 08, 2008, 10:18:48 AM

Quote from: pepatt on May 08, 2008, 05:59:52 AM

Do you mean there's oil on the top (exterior of the plug), or on the business end?

If it's the top, you have a leaking valve cover gasket. If it's on the electrode you've got other issues, and you're probably seeing a lot of blue smoke. That's rings.

Its on the exterior of the plug

Running very well though, good mileage and no smoke whatsoever

Title: Re: Sparkplugs + Oil?
Post by: aaron74 on May 08, 2008, 12:08:29 PM

I don't know how conductive oil is but you might be losing some spark to ground.  I'd be more concerned about the wires getting oil on the insulation - quick way to wreck wires - but that is probably not happening here.  Alternatively, if you don't mind a little Exxon emulation, you could just leave it to slowly weep until you do your next valve lash adjustment. 

Title: Re: Sparkplugs + Oil?
Post by: Carnage on May 08, 2008, 07:12:32 PM

cool, thanks for the info