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Questions tagged [pcv-valve]

PCV is and acronym for Positive Crankcase Ventilation. It is part of a system that helps control air pollution by burning fumes that collect in the engine crankcase instead of venting them to the atmosphere.

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2001 Mercury Sable -- Rough Idle/High RPM and Transmission Leaks

I have a 2001 Mercury Sable (24V DOHC V6) that has been having problems with its vacuum system. I live in Florida where the average temperature lately has been in the 80s. I've been experiencing a ...
Sage's user avatar
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4 votes
0 answers
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Toyota auris 2010 stalls when you remove oil cap while engine is idling

I was inspecting a used Toyota Auris (2009-2010). I turned the engine on and with the car idling I removed the oil cap from the engine. The car stalled within seconds and the engine almost shut down. ...
Leo's user avatar
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3 votes
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high oil consumption and oil pressure, possible PCV system malfunction

I have a 1993 C1500 4.3L manual transmission. My oil pressure has been reading very high (fluctuates, but generally goes beyond the upper range of the gauge). I had the truck in the shop and the ...
derelict's user avatar
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2 votes
0 answers
47 views

Smoking XC90 after PCV box replacement

I have a 2003 Volvo XC90 2.9L T6 AWD and for the most part, it’s been great. Over the past year or so I’ve had an issue with it randomly stalling at slow speeds which was progressively getting more ...
Richard KeMiKaL GeNeRaL Denton's user avatar
2 votes
0 answers
913 views

Tracking Down Excess Crankcase Pressure

So a problem I've been putting off dealing with for a long time is the excess crankcase pressure in my 99 Nissan Almera 1.6L. You can see here in the air box the results of this excess pressure: ...
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2 votes
0 answers
465 views

PCV valve location

I'm looking for the PCV valve in my Peugeot 106 1.1 TU1JP (HFX) year 2000. I can't find it, the closest thing I found is a hose going from the cam cover to the air filter, the connector on the air ...
Rhinoted's user avatar
1 vote
1 answer
15 views

High crankcase pressure, no flow through PCV valve

I have a 2011 Acura RDX with 385000km on it. When I remove the oil filler cap with engine running, the air blowing out the filler hole is substantial. With engine running I unplugged the output side ...
TSG's user avatar
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1 answer
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Suburban stumbles at idle, unknown tube spewing black liquid into air intake is suspected cause. Please advise?

I have a Chevrolet Suburban 2008 1500 with the 5.3L V8 engine. A tube that I believe to be the PCV hose is spewing black liquid into the air intake, and the engine is stumbling at idle. The liquid ...
TheLabCat's user avatar
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'04 Seat Cordoba makes a rythmic pulsating sound

I got a '04 1.4 Seat Cordoba here (340k on the odo!) and it makes a rythmic pulsating sound. The sound occurs under all conditions; warm/cold engine, low/high engine load etc. At first I thought I ...
Bart's user avatar
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How to test what caused pressure to build in crankcase?

After an oil and filter change I took my Toyota Avensis 2006 Estate with 1ZZ-FE 1.8 liter petrol engine for a long distance ride. All of the sudden when riding at around 60-70mph I heard some bang and ...
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Auto transmission slow to engage drive

Auto transmission slow to engage drive and gets worse as the car warms up, after 15 minutes and almost refuses to engage drive at all. Reverse is ok though. If drive does engage it can change up ...
Dean Pearson's user avatar
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Blue smoke when starting cold after fixing the PCV valve

I’m trying to clean the PCV valve on my 2004 Toyota Corolla Altis when I discovered that it’s stuck closed because someone intentionally covered it with plastic rubber. I bought the car 2nd hand about ...
hugseirvak's user avatar
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268 views

Typical crankcase pressure range for a 2.0T gasoline engine

I'm putting together a oil "catch can" system for my Hyundai 2.0T (Theta II) engine. Instead of using a catch can, I plan to use a pneumatic coalescing filter, like a Parker-Watts F501/F507 ...
TimNJ's user avatar
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Why would an oil separator have a vent into the engine bay?

This is Alfa Romeo Giulietta installed oil separator. Disassembly shows the vent is guarded by a flat rubber circle pushed up by a spring. This rubber flab probably ensures the air only flows in. ...
luntain's user avatar
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