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Oil in plugs

Help, Advice and DIY Tutorials on Volvo's extremely popular car line -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
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TheOtherside
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Oil in plugs

Post by TheOtherside » Mon May 13, 2019 4:05 pm

Is this normal?

I'm hoping it's just from spilling oil?

Hoping......
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Clemens
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Re: Oil in plugs

Post by Clemens » Mon May 13, 2019 5:21 pm

nope, this is usually pcv blowby. It is either from the vacum tube the you see coming from under the intakte manifold (check if it is loose on top of the motor) or most likely from the oil filler cap gasket getting hard. Have you cleaned your PCV system lately? If not, it might be about time...


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Re: Oil in plugs

Post by tardcart » Mon May 13, 2019 5:32 pm

sometimes you need a new cap besides the cap rubber even with functioning PVC. but thats a weakness of these cars. supposed to be serviced at 60k miles I think. (PVC}



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Re: Oil in plugs

Post by TheOtherside » Mon May 13, 2019 5:51 pm

Ohk! Thanks guys! I'll check the cap when I get home!

Should I check the hose right next to the cap?


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Re: Oil in plugs

Post by tardcart » Mon May 13, 2019 6:10 pm

the head vent hose almost looks like it has a hole drilled in it on the top? It should be oiteker clamped tight and no cracks or holes. its under about 10 pounds of pressure when the turbo is kicked in even with an unclogged PTC. due to blow by and turbo pressure traveling down the vacuum line from the intake manifold to the PTC, The minimum would be check the hose and get a cap rubber and leave the cover off to monitor and put a rubber glove on the oil fill to check for crankcase pressure. search "glove test"



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Re: Oil in plugs

Post by quietlymknnoise67 » Mon May 13, 2019 6:20 pm

Get the upgrade cap gasket from IPD



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Re: Oil in plugs

Post by abscate » Mon May 13, 2019 6:21 pm

Check both the cap and the PCV hose.

Also, your plug gap seems huge - should be down at about 0.028 " or 0.7mm


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TheOtherside
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Re: Oil in plugs

Post by TheOtherside » Mon May 13, 2019 7:19 pm

Thanks guys. So, the cap gasket is on the actual oil fill cap?


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Re: Oil in plugs

Post by tardcart » Mon May 13, 2019 7:32 pm

Screen Shot 2019-05-13 at 9.30.36 PM.png
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Re: Oil in plugs

Post by TheOtherside » Mon May 13, 2019 7:58 pm

Yeah, that hose popped right off. No effort.

Do you guys recommend me waiting to get new plugs until I figure this out, or should I get new ones now?
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