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Oil filling cylinder up to spark 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
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

Bearj
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Oil filling cylinder up to spark plugs

Post by Bearj » Tue Feb 27, 2018 9:30 am

I got a mechanical question...So when I went to do my tune up on my 2000 v70xc, one of my cylinders was full of oil up to the top of the spark plug. And it was starting to happen on another cylinder but not nearly as bad. Any ideas on what needs fixed? I tried getting the best pictures I could, thanks in advance.
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Rattnalle
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Re: Oil filling cylinder up to spark plugs

Post by Rattnalle » Tue Feb 27, 2018 9:32 am

The actual cylinder or "just" the spark plug well?

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Re: Oil filling cylinder up to spark plugs

Post by Bearj » Tue Feb 27, 2018 9:42 am

It is where the spark plug threads into and the ignition coil boot slides down in. On the top of the motor, Im not sure exactly what its called.

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RickHaleParker
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Re: Oil filling cylinder up to spark plugs

Post by RickHaleParker » Tue Feb 27, 2018 10:15 am

This can be one of four sources.
  • 1. The gasket on the oil cap.
    2. The O'Rings around each Spark Plug Well.
    3. Spills when doing a Oil change.
    4. Lifter adjustment ports.
The O'Rings are between the cam cover and the head. You got oil outside the Spark Plug Well, that points towards Oil cap, Lifter ports, Spills or a combination thereof but, is not conclusive.

I would wash off the oil at a car wash, add trace dye to the oil, then use a Ultraviolet (UV) lamp to trace the oil back to the source.
Last edited by RickHaleParker on Tue Feb 27, 2018 10:21 am, edited 2 times in total.
--------
Platform: P80 1998 C70, B5234T3, 16T, AW50-42, Bosch Motronic 4.4, Special Edition package, Plant: Uddevalla Sweden.
Platform: X40 (Nedcar) 2003 S40, B4204T3, 14T twin scroll AW55-50/51SN, Siemens EMS 2000. Plant: Born Netherlands.
Platform P2 2005 XC90 T6 Executive, B6294T, 4T65 AWD, Bosch Motronic 7.0, Plant Torslanda Sweden.
Platform P2 2004 S60R, B2524T4, AW50/51 AWD, Bosch Motronic 7.0, BorgWarner K24 turbocharger, Plant Ghent Belgium.

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abscate
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Re: Oil filling cylinder up to spark plugs

Post by abscate » Tue Feb 27, 2018 10:20 am

You have a leaky or overloaded PCV system or oil cap gasket. - look at the oil on top of the cylinder head cover. That area should be dry.

On a 1999+ on, you can also leak oil from the CVVT solenoid(s) nearest the timing belt cover
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Re: Oil filling cylinder up to spark plugs

Post by prwood » Tue Feb 27, 2018 11:23 am

I had this problem on my '01 V70, and the spark plug tube seals ended up being the culprit. I replaced them and re-sealed the cam cover, and since then all the oil has stayed where it belongs. I was able to find this by cleaning up the top of the camshaft cover VERY thoroughly, then starting the engine, letting it idle, and watching the cam cover until I saw some oil start to seep from under one of the ignition coils.

Prior to this I had also replaced the oil cap gasket and replaced the PCV system in an attempt to stop the leak (for the PCV system I also had other symptoms including smoking oil dipstick tube and inflating rubber glove test on the oil filler neck).
Cars I've owned:
- 2015 to current: 2001 Volvo V70 2.4T
- 2007 to 2015: 2002 Subaru Legacy L Wagon
- 2003 to 2016: 2001 Toyota Corolla LE
- 1999 to 2003: 1994 Toyota Camry LE

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Re: Oil filling cylinder up to spark plugs

Post by Multiskilled » Tue Feb 27, 2018 11:55 am

Hold a latex glove over your oil cap, if it inflates it's your pcv blocked up. quick and easy to test first

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Re: Oil filling cylinder up to spark plugs

Post by abscate » Tue Feb 27, 2018 11:56 am

To clean up, drive the car to a firefight, then remove all the plugs, let the oil fall into the cylinders, replace plugs, then lay down a smokescreen for the good guys by starting it up.

Oil on the plug threads is good.

Im an optimist and think you just have top cylinder leakage - I think the O-ring failure is pretty rare on these cars...prwoods car was just reminding him it wanted attention after a big cross country trip.
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Re: Oil filling cylinder up to spark plugs

Post by RickHaleParker » Tue Feb 27, 2018 1:06 pm

prwoods car was just reminding him it wanted attention after a big cross country trip.

Prwood drives a Munchausen?
--------
Platform: P80 1998 C70, B5234T3, 16T, AW50-42, Bosch Motronic 4.4, Special Edition package, Plant: Uddevalla Sweden.
Platform: X40 (Nedcar) 2003 S40, B4204T3, 14T twin scroll AW55-50/51SN, Siemens EMS 2000. Plant: Born Netherlands.
Platform P2 2005 XC90 T6 Executive, B6294T, 4T65 AWD, Bosch Motronic 7.0, Plant Torslanda Sweden.
Platform P2 2004 S60R, B2524T4, AW50/51 AWD, Bosch Motronic 7.0, BorgWarner K24 turbocharger, Plant Ghent Belgium.

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abscate
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abscate

Re: Oil filling cylinder up to spark plugs

Post by abscate » Tue Feb 27, 2018 1:20 pm

RickHaleParker wrote:
Tue Feb 27, 2018 1:06 pm
prwoods car was just reminding him it wanted attention after a big cross country trip.

Prwood drives a Munchausen?
By proxy.... :lol:
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