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Oil trap/breather box failure?

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

tryingbe
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Re: Oil trap/breather box failure?

Post by tryingbe » Fri Jul 01, 2016 9:14 pm

theWIFES_S70 wrote:Wow, this looks like an absolute necessity... (And cheaper than OEM...)
I don't have oil on my camshaft cover anymore... :)
85 GLH, 367 whp
00 Insight, 72 mpg

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erikv11
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Re: Oil trap/breather box failure?

Post by erikv11 » Sun Jul 03, 2016 1:29 pm

Is it this hole, discussed here: http://www.matthewsvolvosite.com/forums ... hp?t=74111

It shouldn't leak there unless the top cover was not sealed properly e.g. see http://matthewsvolvosite.com/forums/vie ... hp?t=60383.

Does the engine pass or fail the "glove test?" You're going to want to know that.

Often it looks like it is leaking there but in reality it is spillover from a leaky cap or something. If you are sure it is leaking there, cleaning it up and plugging it with RTC is a decent, cheap and easy fix.
'95 854 T5-R, Motronic 4.4, 185k
'96 855 NA, 145k
'98 S70 NA, 220k (living out west)
'98 V70, T5 tune-injectors-turbo, LPT engine, 286k
'06 S60 R, 167k
'99 Camry V6 :shock: 125k
gone: '96 NA 850 210k, '98 NA V70 182k

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abscate
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Re: Oil trap/breather box failure?

Post by abscate » Sun Jul 03, 2016 6:06 pm

Pulses of air are normal, but you need the glove to detect a build in pressure
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erikv11
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Re: Oil trap/breather box failure?

Post by erikv11 » Sun Jul 03, 2016 6:22 pm

Any latex glove from a parts store will be close enough, then you can just hold it tight around the bottom with your hand. It will either inflate or sit tight or collapse. Rev the engine with your other hand, too (rotate the throttle cable wheel, under that plastic cover), while you are holding the glove on. That should collapse the glove.
'95 854 T5-R, Motronic 4.4, 185k
'96 855 NA, 145k
'98 S70 NA, 220k (living out west)
'98 V70, T5 tune-injectors-turbo, LPT engine, 286k
'06 S60 R, 167k
'99 Camry V6 :shock: 125k
gone: '96 NA 850 210k, '98 NA V70 182k

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erikv11
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Re: Oil trap/breather box failure?

Post by erikv11 » Wed Jul 06, 2016 8:58 pm

There is no actual valve in the PCV system here. Just the oil trap (a hollow box), then the various tubes and holes (ports).

But along those lines, there is the PTC nipple. The hole in the PTC is small, and it can get clogged up. If you didn't clean out the PTC I would definitely check that first, because although it is a hassle to get to, it is still much easier than re-doing the hole PCV setup. The PTC is the thing right in the middle of this pic, with the two hoses connected to it, and a barely-discernable, oily, electrical connector at 8 o-clock:
Image
'95 854 T5-R, Motronic 4.4, 185k
'96 855 NA, 145k
'98 S70 NA, 220k (living out west)
'98 V70, T5 tune-injectors-turbo, LPT engine, 286k
'06 S60 R, 167k
'99 Camry V6 :shock: 125k
gone: '96 NA 850 210k, '98 NA V70 182k

MadeInJapan
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Re: Oil trap/breather box failure?

Post by MadeInJapan » Wed Jul 06, 2016 10:16 pm

On some cars, there's smoke from the dipstick tube- don't know why...my son's car was like that but the glove drew down and the engine had suction...we didn't worry about it and it didn't leak any oil. I think you'll be fine unless you start seeing other issues. Cleaning the PTC was a very very good thing!! I have drilled out several of them! I do like the idea of the larger hose here- I think I'll try to adapt that to our V70 ('04) when it needs to be done.
'98 S70 T5 Emrld Grn Met/Beige Tons of Upgrades Mobil-1
'04 V70 2.5T Red/Taupe Some Upgrades Mobil-1
'07 S40 T5 AWD 6 speed manual! Silver/Black Stage1 Heico & Elevate
'07 S60 2.5T Blue/Taupe- my kid's Volvo

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