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96 Volvo 850R - oil leak on front side of engine

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

T64me
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96 Volvo 850R - oil leak on front side of engine

Post by T64me » Sat Apr 21, 2018 9:19 pm

I have a 96 850R with around 185,000 miles on it. The PVC was recently replaced. I also replaced the rear cam seals and turbo seals. Now I have a leak at the front of the engine. It looks like it is coming from the oil pressure sending unit. Is that a common failure point?

It is not leaking from the oil cooler (a friend suggested I check this area). It is definitely leaking from the front of the engine and it is leaking a good amount.

Any helpful suggestions would be appreciated.



scot850
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Re: 96 Volvo 850R - oil leak on front side of engine

Post by scot850 » Sat Apr 21, 2018 11:04 pm

What brand of parts did you use for the PCV? I used a kit several years ago supplied by a well known Volvo specialist. The car did about 500km and then started leaking from the front. It was a cheap crap Uro branded hose from the PCV catch tank into the mddle of the front of the block split open. Had to take it all apart again and replace it with a Volvo part.

Neil.


2000 V70 R - still being an endless PITA
2006 XC70
2003 Toyota 4Runner V8 Limited
2015 Kia Sportage EX-L
1993 850 GLT -Sold
1998 V70 XC - Sold
1997 Volvo 850 SE NA - Went to niece in California - Sold
2000 V70 SE NA - New project and test bed - Sold

T64me
Posts: 107
Joined: Fri Jun 17, 2011 9:23 pm
Year and Model: 04V70R/05S60R/07S60R
Location: Stillwater, MN
Has thanked: 6 times
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United States of America
T64me

Re: 96 Volvo 850R - oil leak on front side of engine

Post by T64me » Sat Apr 21, 2018 11:20 pm

I used all Volvo PCV parts



T64me
Posts: 107
Joined: Fri Jun 17, 2011 9:23 pm
Year and Model: 04V70R/05S60R/07S60R
Location: Stillwater, MN
Has thanked: 6 times
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United States of America
T64me

Re: 96 Volvo 850R - oil leak on front side of engine

Post by T64me » Sun Apr 22, 2018 8:39 am

How much oil actually passes through the PCV? What I have is a significant oil leak which is causing a puddle the diameter of a grapefruit when the car is parked. I can't believe that a leak from the new PCV system would cause this much of a leak...

The front side of the engine is as high up as the oil pressure sender.



scot850
Posts: 5503
Joined: Mon Apr 05, 2010 2:46 pm
Year and Model: 2000 V70 R
Location: Calgary, Alberta, Canada
Has thanked: 6 times
Been thanked: 135 times
Canada
scot850

Re: 96 Volvo 850R - oil leak on front side of engine

Post by scot850 » Sun Apr 22, 2018 10:09 am

I have heard of oil pressure senders leaking, but am surprised it would be that amount. I have an illuminated mirror on a stick that I use for this type of issue to try to get a better view of where the leak is coming from. If you can reach the sender can you clean off around it and then see if the oil stain around it re-appears? At the front of the engine there are limited options for oil leaks. PCV leaks can give a fair amount of oil leakage.

1) PCV pipes and catch tank connections (check the pipe to the top of the cylinder head. I had one split on me as well as the other one
I mentioned previously (the one from the side of the catch tank to the middle of the block front (4" J shaped one). Also were all the connections tightened fully or over tightened (can split the end of the pipe)
2) Oil filler cap seal leak (but that usually ends up in the spark plug area)
3) Oil pressure switch

Then there could be a bad seal on an oil filter which I have also had once.

Neil.
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T64me


2000 V70 R - still being an endless PITA
2006 XC70
2003 Toyota 4Runner V8 Limited
2015 Kia Sportage EX-L
1993 850 GLT -Sold
1998 V70 XC - Sold
1997 Volvo 850 SE NA - Went to niece in California - Sold
2000 V70 SE NA - New project and test bed - Sold

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