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2007 XC70 Oil leak?

Help, Advice, Owners' Discussion and DIY Tutorials on Volvo's stylish, distinctive P2 platform cars sold as model years 2001-2007 (North American market year designations).

2001 - 2007 V70
2001 - 2004 V70 XC (Cross Country)
2004 - 2007 XC70 (Cross Country)
2001 - 2009 S60
2003 - 2007 S60 R
2004 - 2007 V70 R
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volvlife
Posts: 3
Joined: 16 December 2022
Year and Model: 2007 XC70
Location: US - East coast

2007 XC70 Oil leak?

Post by volvlife »

Anyone know what this leak is on the black tube? Any help is appreciated.

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vtl
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Year and Model: 2005 XC70
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Post by vtl »

Oil vapors come to fresh air intake right before turbo via PTC nipple and PCV system. Everything rubber gets soaked in oil. I keep replacing these hoses every few years.

Your intercooler is also full of oil.
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volvlife
Posts: 3
Joined: 16 December 2022
Year and Model: 2007 XC70
Location: US - East coast

Post by volvlife »

Is it normal? What can I do to fix it if not?
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vtl
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Post by vtl »

volvlife wrote: ↑19 Dec 2024, 08:38 Is it normal? What can I do to fix it if not?
"Normal", as in "happens to every open deck Volvo engine". It develops bore taper, lot more combustion gases leak to crankcase. Not much you can do. Install more robust Darton cylinder sleeves and new piston rings is the only real cure.
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scot850
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Year and Model: 2000 V70 R
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Post by scot850 »

AS for that leak, check the hose to the intercooler is not split at the pipe clamp, and also check the pipe clamp is not loose. Clean up the oil and check it again in a week to see if there is any improvement. There is no fix like our friend vtl states other than do the expensive fix he lists.

Check the PCV system is not blocked by doing the latex glove over the oil filler cap and check if it inflates at idle, and further inflates when rev'd. If it sucks inward all is good. You may need elastic bands to keep the glove on if doing this solo.

Neil.
2006 V70 2.5T AWD Polestar tune
2000 V70 R - still being an endless PITA
2006 XC70 - Our son now has this and still parked in our garage
2003 Toyota 4Runner V8 Limited
2015 Kia Sportage EX-L - Sold
1993 850 GLT -Sold
1998 V70 XC - Sold
1997 Volvo 850 SE NA - Went to niece in California - Sold
2000 V70 SE NA - Sold
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vtl
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Post by vtl »

scot850 wrote: ↑19 Dec 2024, 09:33 Check the PCV system is not blocked by doing the latex glove over the oil filler cap and check if it inflates at idle, and further inflates when rev'd. If it sucks inward all is good. You may need elastic bands to keep the glove on if doing this solo.

Neil.
Not just rev'd - it needs to be in Drive! Otherwise ECM won't command turbo to develop boost. Stepping on brakes and gently revving to 2-2.5k for couple of seconds is the way to go.

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br0dy519
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Year and Model: 2004 XC70
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Post by br0dy519 »

So, that PCV was good? It looked slightly inflated during the boost. But maybe I'm wrong
04s60 2.4
04xc70 2.5t
prwood wrote:I wish I had a permanent car repair area that was covered, had a level surface, lighting and fans, a workbench, and tool cabinets. You know,like a garage. Much of my time during the job is spent hauling things up and down the stairs to the basement or in and out of the storage shed, or running back downstairs when I realize I need something else,or taking a break from standing out in the sun,or using flashlights or work lamps when it gets dark.
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vtl
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Post by vtl »

br0dy519 wrote: ↑19 Dec 2024, 12:38 So, that PCV was good? It looked slightly inflated during the boost. But maybe I'm wrong
There's a third cylinder camshaft lobe sitting directly under the oil filler neck, it throws oil and swirls air when revved.
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br0dy519
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Post by br0dy519 »

Thank you. And thank you for running to and from the driver's seat as to not waste the viewer's precious time. ;) Crazy how much movement the engine has. Really makes it obvious to visualize how the engine mounts endure abuse.
04s60 2.4
04xc70 2.5t
prwood wrote:I wish I had a permanent car repair area that was covered, had a level surface, lighting and fans, a workbench, and tool cabinets. You know,like a garage. Much of my time during the job is spent hauling things up and down the stairs to the basement or in and out of the storage shed, or running back downstairs when I realize I need something else,or taking a break from standing out in the sun,or using flashlights or work lamps when it gets dark.
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