IPD sale Volvo Parts
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 Glove Test: Passes at idle, makes a big balloon under load.

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

jmorman
Posts: 9
Joined: Sun Mar 10, 2019 4:44 am
Year and Model: 2000 s70 GLT SE
Location: Wakeman, Ohio
Has thanked: 0
Been thanked: 0
United States of America
jmorman

PCV Glove Test: Passes at idle, makes a big balloon under load.

Post by jmorman » Fri Jun 21, 2019 8:19 am

I’m getting ready to work on the car for a three day weekend (fingers crossed).

Have a bad oil leak around the front of the engine. Timing belt is oil soaked, oil on cam cover. I believe I have everything I need to do cam seals, water pump, timing belt, tensioner.

This morning I began wondering about the PCV. I do the glove test over the oil fill hole every few months just for fun and it always sucks in. I saw another test where you put a hose in the dipstick hole and run it into the car. You tape your glove on the end of the hose and drive it.
So after my 38 mile drive home I hooked up a good length of hose and managed to get it through the hood and into my car without crimping it off. Drove around town to test that it was sealed and headed three miles out of town driving 55. Glove still completely collapsed.
Thinking it still passed the test, I turned around and when I punched it back into the road the glove blew up big. Once I got back to cruising speed it collapsed again.
I’m glad I found this but ironically on a Friday with no hope for real parts for days.

What is this telling me and what do I do?


2000 S70 GLT SE



User avatar
abscate
MVS Moderator
Posts: 17639
Joined: Sun Feb 17, 2013 5:54 pm
Year and Model: 99T5 ,99S70,2005V70
Location: NYC, ALBANY NY
Has thanked: 189 times
Been thanked: 601 times
Trinidad & Tobago
abscate

Re: PCV Glove Test: Passes at idle, makes a big balloon under load.

Post by abscate » Fri Jun 21, 2019 9:45 am

I only know the benchmark glove on the filler cap, tested both at idle and at light revs.

Its plausible the distick could have pressure during boost or acceleration and then return to vacuum.

But....

When was the PCV last serviced and at what miles? If you have 150k+ on it, you should be doing that to protect your new cam seals anyway...


Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW

Klausc
Posts: 768
Joined: Wed Oct 11, 2006 2:52 pm
Year and Model: 1995 855 Turbo
Location: Shorewood, MN
Has thanked: 4 times
Been thanked: 8 times
United States of America
Klausc

Re: PCV Glove Test: Passes at idle, makes a big balloon under load.

Post by Klausc » Fri Jun 21, 2019 2:14 pm

Your car has a turbo. The turbo increases manifold pressure and the glove inflates. The glove test is only for idle use, preferably on a warm engine.


Klaus
If I had a larger garage, I could have more Volvos.

tardcart
Posts: 411
Joined: Fri Feb 08, 2019 4:17 pm
Year and Model: 96 850t. 93 940t
Location: Pittstown Nj
Has thanked: 3 times
Been thanked: 36 times
United States of America
tardcart

Re: PCV Glove Test: Passes at idle, makes a big balloon under load.

Post by tardcart » Fri Jun 21, 2019 4:35 pm

second Klusc, you are fine.



Post Reply