IPD sale XeMODeX - Experts in Volvo Electronics
Did you know? 🤔
Logged in users can get email notification of topic replies Log in or register (free).
Amazon Link Buy your stuff using this and it helps MVS!

PCV port

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

jsloden
Posts: 55
Joined: Wed Dec 27, 2017 11:20 am
Year and Model: 1998 C70 coupe
Location: Mississippi
Has thanked: 1 time
Been thanked: 2 times
United States of America
jsloden

PCV port

Post by jsloden » Sun Feb 18, 2018 7:47 am

Need some help. Doing the pcv system for the first time. When I got the box off the ports on the engine looked pretty clean. But I cleaned them out really good anyway. The top one is spotless. The bottom one looks clean but when I try to get a brush through it it stops once the brush starts to turn down. Is it possible that the gunk that's in there is actually stopping the brush or is it just getting caught on something. Doesn't that port go all the way down to the oil pan? Should I be able to push the brush all the way to the oil pan?

Thanks



kahl
Posts: 943
Joined: Sat Oct 27, 2012 7:01 pm
Year and Model: 2000V70XC
Location: columbus ohio
Has thanked: 0
Been thanked: 7 times
United States of America
kahl

Re: PCV port

Post by kahl » Sun Feb 18, 2018 11:09 am

Try using some clear hose. It will negotiate the 90degree bends. Any debris will be collected in the hose. If you blow air through the bottom hole and if you hear bubbles then the passage way is clear.



User avatar
oragex
Posts: 4435
Joined: Fri May 24, 2013 6:20 am
Year and Model: S60 2003
Location: Canada
Has thanked: 89 times
Been thanked: 211 times
Contact:
Canada
oragex

Re: PCV port

Post by oragex » Sun Feb 18, 2018 11:16 am

First, don't try getting a brush or anything in there. It is not like a straight hole, it can hang on engine parts. If you break a little piece of metal or plastic it will drop in there. I used a small declogging wire but it's risky, it may get trapped. Plus, at the bottom the drain hole makes a V then goes upwards- no way to clean this section without removing the oil pan.

Just blow some air with a hose (make sure it's well sealed), to hear the oil bubbling (have the oil at max level). At worst, if it sounds like it's clogged I would try a little bit of pressurized air into that lower port after removing the dip stick and oil filler cap - too much pressure will blow seals.



User avatar
rspi
Posts: 7244
Joined: Sat Nov 05, 2011 10:40 am
Year and Model: 850 T-5R Wagon
Location: Albuquerque, NM
Has thanked: 18 times
Been thanked: 38 times
United States of America
rspi

Re: PCV port

Post by rspi » Sun Feb 18, 2018 1:06 pm

oragex wrote:
Sun Feb 18, 2018 11:16 am
Plus, at the bottom the drain hole makes a V then goes upwards- no way to clean this section without removing the oil pan.
I don't think the P80, N engines have the bend.

I use a long zip tie.


'95 855 T-5R M, Panther - 22/28 mpg
'98 S70 GLT, Lil' Red 25/32 mpg
--------------------
Volvo's of past: '87 740 GLE, '79 262C Bertone, '78 264, 960's, '98 S70 GLT, '95 850 T-5R YellowVolvo Repair Videos

Post Reply
  • Similar Topics
    Replies
    Views
    Last post