Ticking noise (eventually found by holding the valve with engine running) driving me mad and P0171, swapped over the PCV and problem solved, great help thanks Andy
Hey. Just a little update. Changed the same thing and my ESC light and Engine light stopped showing up for a week already. Was a bit hard but replaced it myself. Super-happy. Code no. P 0171. Not anymore 🙃🙃🙃
Thank you Andy! It took me an hour to find the problem and 15min to change the valve. I was able to blow the air through old valve and it means it was broken.
That valve at back of the engine on the little rubber mount is the fuel tank breather valve. The pcv is built into the rocker cover. You have a hose from the lower crankcase to the rocker cover where the pcv valve is and that then links back to the inlet.
Hi there, unfortunately it's got a name that gets mixed up often fuel ' purge control valve' so you're right pcv is normally positive crankcase ventilation valve, in this instance I'm referring to the fuel valve! Very confusing thanks for the clarification
@@junkendriven The part you have replaced is the Evaporative Emissions Valve or EVAP Valve which as you say is the fuel tank breather. EVAP is how the scan tool refers to it. The PCV positive crank case ventilation valve is built in to the rocker cover. both are common failures but with different symptoms. the EVAP valve should make a ticking noise when its operating. it only dose that sometimes when the ecu decides its appropriate to vent the fuel tank. If you can blow through it when its disconnected its faulty, stuck open.
So if the oil cap gets sucked back on that's bad? My Mrs Adam has this falt and there's a bit of a high pitched whine on idle also. Trying to diagnose the fault
Struggling to take the thick tube bit (on the right) off. Its very tight on there, any ideas? EDIT: I managed to do it thanks to some WD40. If you are struggling yourself, get a small flat-head screwdriver and first pry it into the edges of the hose to slightly loosen it then use it to wedge open a small gap and spray in your wd40. Then with a bit of twisting it comes right off
Hello I had this same code for my 57 reg zafira I changed alot of things purge valve, lambda sensors, need a new cat, cam cover for PCV and intake temp sensor nothing had shifted this code so I had a hydrogen carbon clean and it cleared the code
Confusingly there are two pcv acronyms on these cars! You are right, Pcv for positive crankcase ventilation valve is correct. This one is also pcv and is purge control valve.
It's a squeeze pull action, make sure you're pressing the lever down enough as sometimes it jams and locks hard. Push in first, press the release lever then waggle left right should come out!
This is very helpful to me my 2012 corsa is having bad engine surging and cutting out when running only started a few days ago the light came on a few hours later showing a P0171 code somebody has checked it for me no leaks we can see anywhere ordered petrol evap valve hopefully this will fix it any advice would be greatly welcomed and appreciated xo
No it didnt :( unplugged my MAF sensor which has stopped it and made it driveable, but is of course a temporary solution, there is a hissing noising coming from somewhere so is booked in with a vauxhall tech tomorrow as also have a CV joint on the way out and rear shock leaking will post when its been seen to and i know the problem
@@samfaulkner6704 Also did replace this valve but to no avail, it was a new part already as previous one was stuck open but changing again didnt fix the issue
Hi Andy. I’ve got suction on the rocker and can also blow through the pcv valve. Should both be replaced or replacing the rocker cover alone solve the problem.
Hi Andy, many thanks for the video. You look very experienced and I am lost to be honest. I would like to ask your opinion. There is an Astra H 1.4 petrol ecotec with rough idle and when I accelerate the throttle jumps to 100% (elm327 + torque pro to monitor), no power, when lose the pedal a bit, only a bit, then throttle goes to 20% ish and get the power. I have replaced the throttle body, cleaned it before the installation, replaced the electronic throttle pedal, used op-com (no obvious error code)... It starts on first button, but the idle rev is good until the engine is cold, then rev goes to around 830 and engine starts shaking. I hear (?) a hissing noise from the right side on the engine, but can't see any leak. Do you have any idea? Could be a surging valve? Thanks, Rob
I got the green plastic clip bit off but the purge valve still wouldnt disconnect, the white clip just will not come off. I pulled quite hard on it too but it wont slip apart. What can I do?
Hi, thanks for watching. The connector comes out by pushing the little clip so it unlocks/pops out slightly then you can pull the pipe apart from the PCV itself.
Thank you Andy, your video did help as I checked my valve and air was going through it. I have replaced it but the engine still seems like the oil cap is being sucked in. It is hard to listen for leaky hoses as the engine is ticking away. If I replace the cam cover with the seals do you think this may help the problem? Thank you
Hi Samantha, it does sound like the cam cover with the breather valve would be the next option to change as suction/pressure from the oil cap is a common solution. Relatively easy replacement too.
@@junkendriven thank you so much for your advice. I was going to start at first by changing the air filter and then rocker cover gasket just as it’s less costly than replacing the whole cover itself. Would this possibly solve the problem? Thank you
Hi Andy, thank you for your video. My corsa( 2012, 1.4 petrol automatic) have same problem of P0171 code. Changed lambda sensor but no luck. Can you please give me part number for PCV volve. Thank you.
Cheers Andy. I got the same problem. Showing check engine and fault system too lean (that p017.. error) i have a sucktion on the black cap next to the yellow oil cap and also the oil cap is sucked into place. Is this the case with the PCV Valve? I would appretiate the OEN number of that spare part if available 🙂
Hey Andy, I I have the same issue and I followed your instructions but found that there is a suction beneath the oil filler cap when I opened it. So what should I do now?
Suction there is bad for the engine, it means the breather isn't working or clogged. These are engine ventilation pipes and breather in the rocker cover that does fail on these engines and needs replacing, that sounds like the issue you're having and needs replacing/cleaning
@@junkendriven crap I already ordered a PCV 😅 Would you please tell what to do exactly as no mechanic here knows what is the problem. Also the rocker cover was replaced couple years ago.
@@junkendriven Andy I rechecked the oil filler cap again and found that it's not a suction it's more of a blow. I but my hand on it and felt the air pushing my hand not sucking it.
@@858Sangreal Ah ok, so a little bit of air pushed from oil filler is normal, it's called "Blow By" and most engines do this to a degree. Providing it's not excessive that should be fine and probably unrelated. I'd go ahead and replace the PCV as you've got one ordered and go from there.
Hi Andy, here is the same problem on my corsa d petrol, i hve got the part that you hold but I couldnt remove the old one from the engine. Can you help me pls
Hi Andy, when i cover the hole on the rocker cover breather the engine idles fine until the next time you touch the acc pedal it starts surging again, no faults are logged in the memory but the cars idles up to 3000rpm at times, there is a noise coming from the hole in the rocker cover too? Any ideas?
I have a problem on my daughters Opel Corsa d 1.0 ltr. The engine occasionally cuts out when the car is coming to a stop or roundabout. I have changed plugs, air filter but still have this intermittent problem. No lights on the dash to indicate what the issue is. The car also “stutters” on overrun but again it’s an intermittent problem and no lights on the dash. Do you have any suggestions?
It sounds possibly like the coil pack if it's rough idling, cutting out, etc. Only when it gets bad will it throw a code for a misfire or similar but I've seen them not throw and codes and swapping the coil pack out solved. Good luck with it
@@junkendriven hello Andy. The problem was a split in a rubber pipe which leads from the top of the engine to the rear (that’s about as technical as I can get) possibly a vacuum pipe. €17:00 cost of genuine replacement and ten to fit. Thank you for your help.
Isnt this a petrol evap valve. ( pev ) ie not pcv valve, which is in rocker cover ,( the membrane you mention ) also depending on what model it is you can change this membrane, watching this video cost me money I didn’t need to spend
Hi there, I don't know if this account is still active, but if anyone could respond would be great. My check engine light has been going on and off for the last 2 months now, when it is on I can feel a loss in power and the engine runs a lot quieter. I have plugged in a reader with the code reading that it is fuel system lean. I have looked it up and this is one of the things so I'll have ago changing it and see what happens!
It could be related. Is it the same petrol engine? As could be other things causing fuel too lean, was it all cylinders or just one? If all then could be fuel pump or fuel line issues
@@junkendriven I did the checks you did no vacuum under the cover where the spark plugs are or the oil cap. But I have also been experiencing the cars fuel consumption being very poor
Do you think I have the same problem with my 2013 Corsa 1.4 SE Automatic? I've made a video of the misfire here: th-cam.com/video/KDtl6ZeVGog/w-d-xo.html Thanks in advance :)
I appreciate this is 3 months old, assuming it's still happening, wait until you hear the sound and then open the hood and disconnect the power (as seen in this video), if the sound goes away, its your Purge Valve. If it's not it could be lifters/tappets or timing chain. as your video says could be the coil packs or the spark plugs
Ticking noise (eventually found by holding the valve with engine running) driving me mad and P0171, swapped over the PCV and problem solved, great help thanks Andy
I have this problem and am trying to find the part i need to order but im clueless. Is a PCV and fuel tank breather valve the same thing?
Hey. Just a little update. Changed the same thing and my ESC light and Engine light stopped showing up for a week already. Was a bit hard but replaced it myself. Super-happy. Code no. P 0171. Not anymore 🙃🙃🙃
Thank you Andy! It took me an hour to find the problem and 15min to change the valve. I was able to blow the air through old valve and it means it was broken.
Thank you. Short simple and after 6 month P0171 my corsa is clear now
That valve at back of the engine on the little rubber mount is the fuel tank breather valve. The pcv is built into the rocker cover. You have a hose from the lower crankcase to the rocker cover where the pcv valve is and that then links back to the inlet.
Hi there, unfortunately it's got a name that gets mixed up often fuel ' purge control valve' so you're right pcv is normally positive crankcase ventilation valve, in this instance I'm referring to the fuel valve!
Very confusing thanks for the clarification
@@junkendriven The part you have replaced is the Evaporative Emissions Valve or EVAP Valve which as you say is the fuel tank breather. EVAP is how the scan tool refers to it. The PCV positive crank case ventilation valve is built in to the rocker cover. both are common failures but with different symptoms.
the EVAP valve should make a ticking noise when its operating. it only dose that sometimes when the ecu decides its appropriate to vent the fuel tank.
If you can blow through it when its disconnected its faulty, stuck open.
I Wish i could find a vid that just identifies all the bits stuck on the engine!
Thank you, i didnt have any error codes on my OBD but after replacing this my car is running way better :)
Hi, I’m struggling to find the part. I have a 2010 1.2 corsa. Can you please help me find this?
So if the oil cap gets sucked back on that's bad? My Mrs Adam has this falt and there's a bit of a high pitched whine on idle also. Trying to diagnose the fault
Cheers Andy for all the vacuum tips cheers sandy
Please add a video of removing the vaccuum pipe with connector..
How do you disconnect the valve, you skipped that part
Good luck with that
My engine oil filler cap is sucking ?
So whats that mean ?
Any advice on what i can use to get that pc valve off because mine is had to pull off . Thanks
Getting the p10171 code watched your video, so will do some checking . Good video
I covered that rocker cover hole with my finger and the engine started making a strange hissing sound. Any ideas?
My zafira 1600 petrol is doing so will change it many thanks great video
Great news, good luck getting it sorted Charles
Got the valve, just need to change it but its the same fault on my 2018 68 reg 1.4.
1500 miles and no faults and it runs so much better
Struggling to take the thick tube bit (on the right) off. Its very tight on there, any ideas?
EDIT: I managed to do it thanks to some WD40. If you are struggling yourself, get a small flat-head screwdriver and first pry it into the edges of the hose to slightly loosen it then use it to wedge open a small gap and spray in your wd40. Then with a bit of twisting it comes right off
Tiny spray of silicone lubricant might just help free it. It'll just be heat cycles on the rubber and plastic causing them to bond
Hello I had this same code for my 57 reg zafira I changed alot of things purge valve, lambda sensors, need a new cat, cam cover for PCV and intake temp sensor nothing had shifted this code so I had a hydrogen carbon clean and it cleared the code
What's a hydrogen carbon clean. This PCV valve he is talking about seems to be a fuel breather hose. Is that your understanding.
I thought that was the evap purge valve. The valve on the rocker cover is the PCV(Positive Crankcase Ventilation Valve)???? I’m not a mechanic lol
Confusingly there are two pcv acronyms on these cars!
You are right, Pcv for positive crankcase ventilation valve is correct.
This one is also pcv and is purge control valve.
Hey Andy how do you take the electrical connection off been struggling with mine?
It's a squeeze pull action, make sure you're pressing the lever down enough as sometimes it jams and locks hard. Push in first, press the release lever then waggle left right should come out!
Hey mate. How did you detach the part on the left hand side. With the little green square? Cheers. (New to fixing)
I've got the issue I don't know how to remove that pipe with a little green on it, have you got any idea mate?
@@meron5303 you should be able to press the green bit and that should release it.
So if the membrane is not shot but there is vaccum when removing the engine filler cap you need to replace the valve cover?
This is very helpful to me my 2012 corsa is having bad engine surging and cutting out when running only started a few days ago the light came on a few hours later showing a P0171 code somebody has checked it for me no leaks we can see anywhere ordered petrol evap valve hopefully this will fix it any advice would be greatly welcomed and appreciated xo
Did this fix the issue?
No it didnt :( unplugged my MAF sensor which has stopped it and made it driveable, but is of course a temporary solution, there is a hissing noising coming from somewhere so is booked in with a vauxhall tech tomorrow as also have a CV joint on the way out and rear shock leaking will post when its been seen to and i know the problem
@@samfaulkner6704
Also did replace this valve but to no avail, it was a new part already as previous one was stuck open but changing again didnt fix the issue
Hi Andy. I’ve got suction on the rocker and can also blow through the pcv valve. Should both be replaced or replacing the rocker cover alone solve the problem.
Hi Andy, many thanks for the video. You look very experienced and I am lost to be honest. I would like to ask your opinion. There is an Astra H 1.4 petrol ecotec with rough idle and when I accelerate the throttle jumps to 100% (elm327 + torque pro to monitor), no power, when lose the pedal a bit, only a bit, then throttle goes to 20% ish and get the power. I have replaced the throttle body, cleaned it before the installation, replaced the electronic throttle pedal, used op-com (no obvious error code)... It starts on first button, but the idle rev is good until the engine is cold, then rev goes to around 830 and engine starts shaking. I hear (?) a hissing noise from the right side on the engine, but can't see any leak. Do you have any idea? Could be a surging valve? Thanks, Rob
Key bit of information missed in this video, how to remove the left hand connector
Yes I’m struggling to remove that side too
Did you manage to get it off
Green clip - push pull ???
I got the green plastic clip bit off but the purge valve still wouldnt disconnect, the white clip just will not come off. I pulled quite hard on it too but it wont slip apart. What can I do?
So how does the left pipe come off - small green clip - do you remove the green clip or push it in ( easy when you know how )
I hear a whining sound and a vacum /brake pedal problem . wut could it be? rev drops to when i press brake
How does that green clip work? How do you release that side? Having issues with this. Thanks
Hi where does the pipe connected to the pcv valve go to it seems to run along the fuel pipe ???
There is a load squeak coming from we're the vacuums are... Could it be them..
Thanks
Where is it located on a vxr Corsa dd???
Hi Andy thanks for your help, I'm just struggling how to remove the left pipe with a little green on it, could you please explain more about it.
Hi, thanks for watching. The connector comes out by pushing the little clip so it unlocks/pops out slightly then you can pull the pipe apart from the PCV itself.
Thank you Andy, your video did help as I checked my valve and air was going through it. I have replaced it but the engine still seems like the oil cap is being sucked in. It is hard to listen for leaky hoses as the engine is ticking away. If I replace the cam cover with the seals do you think this may help the problem?
Thank you
Hi Samantha, it does sound like the cam cover with the breather valve would be the next option to change as suction/pressure from the oil cap is a common solution. Relatively easy replacement too.
@@junkendriven thank you so much for your advice. I was going to start at first by changing the air filter and then rocker cover gasket just as it’s less costly than replacing the whole cover itself. Would this possibly solve the problem?
Thank you
So fuel trim lean and when you start the engine there should be rough idling?.
Hi Andy, thank you for your video. My corsa( 2012, 1.4 petrol automatic) have same problem of P0171 code. Changed lambda sensor but no luck. Can you please give me part number for PCV volve.
Thank you.
Tried to take the pipe on the left couldn’t do it and couldn’t take the connector off I’ve been trying for an hour I give up
Did u get it off in the end
I’m struggling too
That valve did crazy ticking noise in my ADAM S, replaced it then it stopped
Cheers Andy. I got the same problem. Showing check engine and fault system too lean (that p017.. error) i have a sucktion on the black cap next to the yellow oil cap and also the oil cap is sucked into place. Is this the case with the PCV Valve? I would appretiate the OEN number of that spare part if available 🙂
Hi, unfortunately the PCV isn't the cause of your issue, most likely crankcase breather
Did the engine tick on first start up then after a second or so did the ticking stop
Hi my corsa d keeps reving up when you put your foot on the brack it goes to 1000 when you take it off it goes back up again
Hey Andy, I I have the same issue and I followed your instructions but found that there is a suction beneath the oil filler cap when I opened it. So what should I do now?
Suction there is bad for the engine, it means the breather isn't working or clogged. These are engine ventilation pipes and breather in the rocker cover that does fail on these engines and needs replacing, that sounds like the issue you're having and needs replacing/cleaning
@@junkendriven crap I already ordered a PCV 😅
Would you please tell what to do exactly as no mechanic here knows what is the problem. Also the rocker cover was replaced couple years ago.
@@junkendriven Andy I rechecked the oil filler cap again and found that it's not a suction it's more of a blow. I but my hand on it and felt the air pushing my hand not sucking it.
@@858Sangreal Ah ok, so a little bit of air pushed from oil filler is normal, it's called "Blow By" and most engines do this to a degree. Providing it's not excessive that should be fine and probably unrelated. I'd go ahead and replace the PCV as you've got one ordered and go from there.
@@junkendriven
Thanks Andy. 👍
Hi my oil cap sucks back does that mean its the same problem?
whos car was this, did you get rid of it for the 1.2
Hi Andy, here is the same problem on my corsa d petrol, i hve got the part that you hold but I couldnt remove the old one from the engine. Can you help me pls
In this model the idle should be 1000 rpm? If is like 750 will be this valve the problem? Thx
My idle is the same. I'm thinking this should solve it.
Hi Andy, when i cover the hole on the rocker cover breather the engine idles fine until the next time you touch the acc pedal it starts surging again, no faults are logged in the memory but the cars idles up to 3000rpm at times, there is a noise coming from the hole in the rocker cover too? Any ideas?
Did u fix this in having same problem
@@billyfranks9882 I did, the “PCV Valve” located in the rocker cover was defective,I replaced the complete unit(rocker cover) which solved the problem
I've just done the same and fixed my problem thanks
@@billyfranks9882 pleasure mate, glad you got it sorted!! ^^
hi @@bosvark4x4adventures did you replace both pcv and tappet/rocker cover or just the tappet/rocker cover?
How do you get the green clip out
I have a problem on my daughters Opel Corsa d 1.0 ltr. The engine occasionally cuts out when the car is coming to a stop or roundabout. I have changed plugs, air filter but still have this intermittent problem. No lights on the dash to indicate what the issue is. The car also “stutters” on overrun but again it’s an intermittent problem and no lights on the dash. Do you have any suggestions?
It sounds possibly like the coil pack if it's rough idling, cutting out, etc. Only when it gets bad will it throw a code for a misfire or similar but I've seen them not throw and codes and swapping the coil pack out solved. Good luck with it
@@junkendriven hello Andy. The problem was a split in a rubber pipe which leads from the top of the engine to the rear (that’s about as technical as I can get) possibly a vacuum pipe. €17:00 cost of genuine replacement and ten to fit. Thank you for your help.
Is thete meant to be a suction on the oil filler cap or not
mine pushes to to the sky and is extremley loud
Careful when removing the valve, my hose was quite literally stuck so I ended up accidentally ripping it in half and had to pay £34 for a new one.
i ripped it appart hows that hose called
@@ambarmesagomez3655 www.online-parts.co.uk/vauxhall-spare-parts/55566846_Hose.html thats the link for it
i did the same :-( £8 for genuine vx part delivered on ebay
ripping the hose made u a favour
Hi Andy Andy here is there a steel ball in that tube
Hi Andy, oh that's a good point, it would certainly make sense based on the noise, I'll have to tear one apart to see!
How did you diagnose this as bad?
This is happening to me in my 1.4 Astra I’ve replaced coil pack spark plugs and o2 sensors wasting so much money driving me insane please help
Question, did you replace the pcv fuel valve that I showed in the video?
is it possible this valve gives up only after 2 years of service?
Possibly. Will depend if it's a clone part then potentially yes.
Hi mate, mine makes a clicking sound is that normal?
Yep, it's a solenoid that when energised clicks so ticking is normal for it. If you hear it in the cabin use rubber fittings to help reduce the noise
@@junkendriven can you show how to putt the rubber fittings. the sound makes me crazy! i hear it verry loud in the cabine
Hi. Do you have a part number reference? Thanks
MagnusRex4 0280142486 i found it in Autodoc
@@eduardol9651 thank you Eduardo 👍
Thanks 😍
would the pcv valve cause blue in the exhaust gases?
Unfortunately not, only real cause of blue in exhaust is burning oil so head gasket or seals most likely. Sorry!
yes defo my inlet
manifold full of oil. pcv valve stuck shut. so blue smoke in exhaust all ok now
if the oil cap has suction what would that mean ?
I believe it's Rocker cover valve/breather is blocked or damaged so causing pressure. Needs resolving so it doesn't cause damage
Andy Brown where is this located andy ?
I have this problem
I need location for pcv valve for gtc vxr.
Be careful not to break the rubber pipe. It costs £20 to replace for ((some reason))
That's an expensive pipe! Good tip, thanks
Isnt this a petrol evap valve. ( pev ) ie not pcv valve, which is in rocker cover ,( the membrane you mention ) also depending on what model it is you can change this membrane, watching this video cost me money I didn’t need to spend
I thought so too.
Hi there, I don't know if this account is still active, but if anyone could respond would be great. My check engine light has been going on and off for the last 2 months now, when it is on I can feel a loss in power and the engine runs a lot quieter. I have plugged in a reader with the code reading that it is fuel system lean. I have looked it up and this is one of the things so I'll have ago changing it and see what happens!
is this the same as a Breather Valve, fuel tank
It could be related. Is it the same petrol engine? As could be other things causing fuel too lean, was it all cylinders or just one? If all then could be fuel pump or fuel line issues
@@junkendriven I did the checks you did no vacuum under the cover where the spark plugs are or the oil cap. But I have also been experiencing the cars fuel consumption being very poor
@@junkendriven I’ve got a Vauxhall corsa 1.2 sxi so assuming it’s the same
Hi
Scrap it
Good info an other gone learn something new everyday
😂😂😂😂😂
Do you think I have the same problem with my 2013 Corsa 1.4 SE Automatic? I've made a video of the misfire here: th-cam.com/video/KDtl6ZeVGog/w-d-xo.html
Thanks in advance :)
I appreciate this is 3 months old, assuming it's still happening, wait until you hear the sound and then open the hood and disconnect the power (as seen in this video), if the sound goes away, its your Purge Valve. If it's not it could be lifters/tappets or timing chain.
as your video says could be the coil packs or the spark plugs
my problem is the rocker cover. can i temporary close off the hole till i can find a cover replacement?