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S40 / V40 '96-'04 General Forum for the Volvo S40 and V40 (Classic) Series from 1995-2004. |
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T4 crankcase ventilationViews : 1859 Replies : 7Users Viewing This Thread : |
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Nov 18th, 2007, 21:59 | #1 |
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T4 crankcase ventilation
Hi folks,
I have oil escaping somewhere down the back of the block and I've been advised by a mech at the stealers to check the elbow on the breather pipe which is located behind the inlet manifold. Apparently is advisory by Volvo as the elbow is prone to clogging with carbon. Do I have to take off the manifold or will I get at it if I move the power steering pump to one side?
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Liam... '96 854 TDI SE, '99 V70 2.5D S, '05 C70 2.0T Collection, '05 S80 2.0T SE, '15 V70 D4 SE Lux Nav. |
Nov 18th, 2007, 22:51 | #2 |
Master Member
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I suggest removing the inlet manifold.... here's why....
If you want to service the whole PCV system to eliminate all area's of possible cause, you will need to remove the inlet manifold to access the oil trap at the base of the front of the block. Hence remove the inlet manifild onc and clean out all the associated items.Re the PCV system, you should also clean and clear the flame trap housing location, confirm all the breather holes as clear. If the elbow is not the culprit then you will have removed the PS pump and lost the belt tension for nothing. (Or you could remove the PCV air pump and hoes and valve control and simply block off the PCV inlet hole. then all you have is a breather to the oil trap). There are other posts here type in PCV removal in SEARCH for details. Hope this helps... |
Nov 19th, 2007, 13:45 | #3 |
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Bearing in mind that there's 163k miles up on it...will I need a new gasket for the inlet manifold or will it come away easily? I assume it's a paper gasket? How long do ya think I will need for this job?
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Liam... '96 854 TDI SE, '99 V70 2.5D S, '05 C70 2.0T Collection, '05 S80 2.0T SE, '15 V70 D4 SE Lux Nav. |
Nov 19th, 2007, 21:31 | #4 |
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I have just cured an oil leak on the back of my T4 which I thought was due to blocked breather. It turned out to be an O-ring on the turbo oil drain pipe where it connects to the cylinder block. The ring, and the gasket for the flange at the turbo end cost me less than £3 and despite awkward access took me an hour for the job.
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Nov 19th, 2007, 21:43 | #5 | |
Non-T4 T4s RULE!!!!
Last Online: Mar 29th, 2017 11:24
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Location: Bristol / Bath
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Quote:
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"An Engine Which Runs Lean Lives on Borrowed Time" http://www.volvoforums.org.uk/showthread.php?t=13998 |
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Nov 20th, 2007, 02:31 | #6 | |
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Yes, I have a new oil return O ring, along with various new seals and gaskets to go in with a new turbo I've acquired.. (that is when I get the time to fit it) ..but I want to know why it's building pressure as I don't want to blow any more seals. According to some of the Volvo check list history for my car there was an advisory on the rear crankshaft seal...which is a big job to replace as the gearbox has to come out! Back to the thread... Can anyone advise on the inlet mainfold gasket? Will I need to replace it if I take off the manifold to access the breather pipes?
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Liam... '96 854 TDI SE, '99 V70 2.5D S, '05 C70 2.0T Collection, '05 S80 2.0T SE, '15 V70 D4 SE Lux Nav. |
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Nov 20th, 2007, 05:47 | #7 | |
MaDMaN
Last Online: Nov 26th, 2022 18:47
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Quote:
with regards to the gasket.... all the ones i have done on t5 engines have basically just fallen off..... but for the few pennies they cost always fit a new one! if you search jodt5's technical section you will find some helpfull stuff on pcv's.... i would imagine alot of it will be relevant for t4's
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Dec 18th, 2007, 18:10 | #8 | |
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