my Econoline was running rich and i noted the oil dipstick was always pushed up a little every time i checked it. i figured it was excess pressure pushing it up so i replaced the PCV valve and it was/is fine.
My car has everyone of these symptoms. Had spark plugs changed because it was skipping. Thought it might be the coils but they were good. I’m getting my PCV valves changed tomorrow!
on a GM motor, the PCV valve slides into a rubber grommet on the top of a valve cover and the other end to a nipple on the intake cover. thanks for the video!
I have 2001 acura integra. Just fixed timing belt. When i started it up after fixing it runs and then when i hit the gas the rpms go up and down. I did not gave this issue before. It sat for about 7 months before i fixed the timing belt. Anykne ever run into this?
Not a pro mechanic, just a dabbler. Did all of the timing marks on the cogs match the marks on the block after you replaced and tensioned the new belt? A tip I found on UA-cam that helped me was to mark the old belt at each cog so you have very visible indications of misalignment. Here's the tip link: ua-cam.com/video/ppg5JFxCOlU/v-deo.htmlsi=OczwUGWW0DymB6VV
Did u start the car at all in that 7 months? if not might just need to do a oil change new fuel and check hoses they tend to become brittle and Crack when car sits for to long
@joleeneperkins2036 thanks for the response. I actually just didn't have enough coolant in. Lol. I am not a mechanic, but after doing the timing belt I feel like one. Did not start cause it wouldn't because the timing belt went. Gonna do an oil change soon. Thanks again.
No, check your evap purge control solenoid. Diagnostic Procedure Preliminary Checks Retrieve DTCs: Verify that P1450 is the only code present. If other codes exist, address them first as they may be contributing to the P1450. Visual Inspection: Fuel Cap: Inspect the fuel cap for damage, proper sealing, and ensure it's tight. A loose or faulty cap can cause excessive vacuum. EVAP System: Visually inspect all EVAP lines, hoses, and connections for damage, kinks, or disconnections. Pay close attention to the lines running to the EVAP canister and purge valve. Fuel Filler Neck: Inspect the fuel filler neck for any obstructions or damage, especially if the vehicle has a capless system. Functional Tests Fuel Tank Pressure Sensor (FTP) Test: Monitor FTP Voltage: Use a scan tool to monitor the FTP sensor voltage with the engine running. The voltage should fluctuate as the system purges. Compare to Specs: Compare the voltage readings to manufacturer specifications. A faulty sensor may produce erratic readings or readings outside the normal range. EVAP Purge Valve Test: Command On/Off: Use a scan tool to command the EVAP purge valve on and off. You should hear an audible click when the valve activates. Check for Leaks: With the purge valve commanded on, check for vacuum leaks at the valve and connected hoses. EVAP System Leak Test: Smoke Machine: Use a smoke machine to introduce smoke into the EVAP system. Look for smoke escaping from any hoses, connections, or components. This will pinpoint the location of a leak. EVAP Canister Vent Valve Test: Check for Blockage: Inspect the vent valve and filter for any blockage or restrictions. A clogged vent valve can cause excessive vacuum in the tank. Vacuum Pump Test: Apply Vacuum: Use a hand vacuum pump to apply vacuum to the EVAP system. Monitor the vacuum gauge for any decay, which indicates a leak. Component Tests Fuel Tank Pressure Sensor: If the FTP sensor readings are out of spec, replace the sensor. EVAP Purge Valve: If the purge valve is not functioning correctly or has a leak, replace the valve. EVAP Canister: If the canister is damaged or restricted, replace the canister. EVAP Canister Vent Valve: If the vent valve is faulty, replace the valve. EVAP Lines and Hoses: Replace any damaged or leaking lines or hoses.
I have a chevy cruze with the 1.4L turbo. The PCV valve is under the valve cover and unaccessible without complete removal and replacement of the cover. Its throwing a code for lean air mixture. No rough idle no stalling no smoke but acceleration has been getting worse and highway driving is starting to be out of the picture. Although fuel economy is unchanged. The hose leading out from pcv valve has accumulated a small pool of clean oil ontop of my intake manifold. I dont have the tools or area needed to work on it. I have put it off for about 3 weeks now. Have I already damaged the engine severally?
I have a 2015 gmc sierra 5.3 it’s very shaky it stutters when tryna drive I’ve had codes for miss cylinder misfire I’ve changed coils plugs and wires AC/delve it’s still doing the same thing engine lights blinks brake light on and traction control/ abs I need help
I have a 2011 ford bantam rocam only when its hot it will smoke white blue and when starting.when cold there is no problem i thought of this valve can it be the problem?
NEED HELP: I have a 2004 Mercury Mountaineer V8 is was running great. However, it starting a little jerk every blue moon when I would hit the gas while drive but it was sporadic. It still drove great. At red lights, if idle too long it would sound like it was loosing power & shake a little. I would hit the gas pedal but it would take the gas 2 seconds slower than usual. Yday, it died at the red light. Took it to O'Reilly this morning to check the codes. It gave primary DTC Fuel System Too Lean (Cylinder Bank 1). P0171 crankcase breather house and PCV valve. We replaced the PCV valve but it runs worse and won't stay crank. Please help me.
Your 2004 Mercury Mountaineer is likely experiencing a lean fuel condition due to the P0171 code, indicating not enough fuel or too much air entering cylinder bank 1. After replacing the PCV valve, ensure it’s properly installed and check for any vacuum leaks, especially in the crankcase breather hose. The fuel system should also be examined for clogs or pressure issues, as a failing fuel pump could contribute to the problem. Good Luck!
Ok I don't have a code reader and have run into an issue with my 2011 camry. The first start up in the morning is great. The engine cranks right up. After I have driven it for a few miles 10, 20 or 30 and let it sit for a moment it cranks, cranks and cranks then eventually starts up. I recently put in a new battery and replaced the air filter. Any suggestions where to go next? I've been told the fuel pump, but the car idles and runs great other than the start up on a warm engine.
Sounds like the car is getting older and needs a tune up. I would drop a bottle of SeaFoam Can in the gas tank. Hit the highway for 1-2 hours. Check and replace spark plugs. The problem of course can be fuel related. So you would want to start with cheaper fix options: replace fuel filter, SeaFoam will help clean the fuel injectors. Go from there. Hope this helps. Also check out this Video on coolant temperature sensor, resulting in hard starts: ua-cam.com/video/VxGDLTGOrCE/v-deo.html Good Luck!
@@fixit3879 Ok thanks for everyone's help in helping me diagnose my car issue. I went ahead and replaced the fuel pump and everything seems to be working great. Around $400 because I couldn't find the exact replacement for my car anywhere else, but that's ok as long as it works.
UNSUAL ENGINE SOUNDS: No kidding, that thing had me thinking I messed up royally! I was thinking the injectors shorts, coil packs were fritzing, even worse that I was developing lift tick. I took it in and my shop laughed in relief "Audrey, it ain't electrical. It's the stupidest reason, come on back, take a look at this! It's the dang PCV valve, take it back!" I am starting to believe Autozone is trash!!!
Yes, a bad PCV (Positive Crankcase Ventilation) valve can cause your engine to run rough, especially under additional loads like when the air conditioning is turned on, as it affects engine vacuum and performance. Replacing a faulty PCV valve may improve engine stability and performance. Good Luck!
no mention was made of the valve cover baffles which is part of the PCV system isnt it......when the baffles get clogged with carbon it affects the PCV system and cause high oil consumtio doesnt it? I find so
If your 1987 Porsche 911 smokes on startup, a faulty PCV (Positive Crankcase Ventilation) valve could be a potential cause. The PCV valve helps regulate the flow of gases and can lead to smoking if it's clogged or malfunctioning. However, it's also worth checking other potential issues like valve seals, oil leaks, or worn piston rings, as these could contribute to smoking as well. Thank you for sharing. What other symptoms do you have?
Air escaping from the oil cap could mean a faulty PCV valve or excess crankcase pressure. It’s worth checking the PCV valve and having the engine inspected if the air flow is significant or there are other symptoms.
@@tonycervantes4816 just change your PCV most are ~$10. look for cracked hoses and squeeze them. the pcv discharges into your air intake usually at the throttle. spray carburetor cleaner gently and slowly. when you hear it rev up you, found a leak.
It might be a faulty thermostat, radiator cap, radiator hoses, or a small leak in the AC system. The first thing I would highly recommend is getting an AC system pressure test done to check and see if you have any coolant leaks.
Also, before you start your vehicle, take off the radiator cap and check if the coolant level is where it should be. Also, start your vehicle and look under the hood and underneath the vehicle to see if you spot any visual leaks. If you are not sure, just take it to a mechanic shop if it makes you comfortable.
@@DanielShepherdjr thanks, will do. but cannot also be that the oil is forming sludge and so causing to overheat?? or even sludge formation should not cause the overheating??
@carlosandresparra9306 Not necessarily always the case, but it is something to look at. There are good engine flush products you can try, like Liqui Moly Engine Flush, but if you go that route, I highly recommend you use Liqui Moly motor oil from that point forward after performing the engine flush.
Years ago I bought a used car that started having engine overheating issues. The radiator was clogged with some form of liquid seal product the previous owner used on a car. So sometimes flushing the radiator might also help too. Good Luck.
I have Camry 2015 LE. I wanted to it replaced with new one as my car consuming engine oil. I realised that PC valve is at very difficult location. Now I have valve lying in my glove box. Even a mechanic was unable to replace it. 😂
I started having rough & high idle, slight hesitation upto 20 kmph speed & sometimes AC Compressor tripping until car runs below 40 kmph INTERMITTENTLY, after I got an oil change in my ‘09 ES350. It started after I had mistakenly switched from 5W30 to 10W40 on the wrong advice of the oil shop guy once. Back to 5W30 now, spark plugs are new, throttle body is clean, air filter is perfect, sensors are fine, no Check Engine light and I got the injectors cleaned as well. After injectors job it stayed fine for a few days then started everything again. I didn’t touch the PCV, Fuel filter or pump yet. The only codes I have are of timing chain (advance and retard). Could it be the PCV or what?? No has been able to diagnose it yet maybe coz it’s intermittent. KINDLY ADVICE! 🙏🏽 THANK YOU!
Thank you for sharing this valuable information. It is very helpful I am this problem with chevy Traverse.
my Econoline was running rich and i noted the oil dipstick was always pushed up a little every time i checked it. i figured it was excess pressure pushing it up so i replaced the PCV valve and it was/is fine.
That was very good explanation of the PCV valve thank you 👍
My car has everyone of these symptoms. Had spark plugs changed because it was skipping. Thought it might be the coils but they were good. I’m getting my PCV valves changed tomorrow!
Oh wow. PCV Valve part itself is usually not that expensive. And you can replace it yourself. Good luck. Thank you for sharing!
Did it solve your problem
Did it solve the problem?
Cuestión sir But if the PCV valve is fine in my car, do I need to replace it with a new one? When is that PCV valve bad? Does it send a code? Help
Same symptoms!!! Will change it within a few days!
Explanation explaining location! Great video
on a GM motor, the PCV valve slides into a rubber grommet on the top of a valve cover and the other end to a nipple on the intake cover.
thanks for the video!
The valve is also very hard to remove. I had a GM with a PCV valve all clogged up with oil once.
Your animated videos are easy to understand... Thanks...
We are glad you find them helpful. Thank you!
Will a open pcv valve cause all 4 o2 sensors to malfunctioning causing major misfire
I have 2001 acura integra. Just fixed timing belt. When i started it up after fixing it runs and then when i hit the gas the rpms go up and down. I did not gave this issue before. It sat for about 7 months before i fixed the timing belt. Anykne ever run into this?
Not a pro mechanic, just a dabbler. Did all of the timing marks on the cogs match the marks on the block after you replaced and tensioned the new belt? A tip I found on UA-cam that helped me was to mark the old belt at each cog so you have very visible indications of misalignment. Here's the tip link: ua-cam.com/video/ppg5JFxCOlU/v-deo.htmlsi=OczwUGWW0DymB6VV
Did u start the car at all in that 7 months? if not might just need to do a oil change new fuel and check hoses they tend to become brittle and Crack when car sits for to long
@joleeneperkins2036 thanks for the response. I actually just didn't have enough coolant in. Lol. I am not a mechanic, but after doing the timing belt I feel like one. Did not start cause it wouldn't because the timing belt went. Gonna do an oil change soon. Thanks again.
@@ITCDennis I actually just didn't have enough coolant in there!! Lol
I detected an error at 3:55
He says “PVC” , I read that I win a prize for detecting that mistake. Thank you
My bad hearing caught this as well
🎉🥳✨
here's a virtual cookie 🍪
Pls tell me where is the pcv valve of toyota 1 kd located ?
Can this cause evap system symptoms to occur being confused from this? I have an 2015 f150 and am getting the P1450 codes.
No, check your evap purge control solenoid. Diagnostic Procedure
Preliminary Checks
Retrieve DTCs: Verify that P1450 is the only code present. If other codes exist, address them first as they may be contributing to the P1450.
Visual Inspection:
Fuel Cap: Inspect the fuel cap for damage, proper sealing, and ensure it's tight. A loose or faulty cap can cause excessive vacuum.
EVAP System: Visually inspect all EVAP lines, hoses, and connections for damage, kinks, or disconnections. Pay close attention to the lines running to the EVAP canister and purge valve.
Fuel Filler Neck: Inspect the fuel filler neck for any obstructions or damage, especially if the vehicle has a capless system.
Functional Tests
Fuel Tank Pressure Sensor (FTP) Test:
Monitor FTP Voltage: Use a scan tool to monitor the FTP sensor voltage with the engine running. The voltage should fluctuate as the system purges.
Compare to Specs: Compare the voltage readings to manufacturer specifications. A faulty sensor may produce erratic readings or readings outside the normal range.
EVAP Purge Valve Test:
Command On/Off: Use a scan tool to command the EVAP purge valve on and off. You should hear an audible click when the valve activates.
Check for Leaks: With the purge valve commanded on, check for vacuum leaks at the valve and connected hoses.
EVAP System Leak Test:
Smoke Machine: Use a smoke machine to introduce smoke into the EVAP system. Look for smoke escaping from any hoses, connections, or components. This will pinpoint the location of a leak.
EVAP Canister Vent Valve Test:
Check for Blockage: Inspect the vent valve and filter for any blockage or restrictions. A clogged vent valve can cause excessive vacuum in the tank.
Vacuum Pump Test:
Apply Vacuum: Use a hand vacuum pump to apply vacuum to the EVAP system. Monitor the vacuum gauge for any decay, which indicates a leak.
Component Tests
Fuel Tank Pressure Sensor: If the FTP sensor readings are out of spec, replace the sensor.
EVAP Purge Valve: If the purge valve is not functioning correctly or has a leak, replace the valve.
EVAP Canister: If the canister is damaged or restricted, replace the canister.
EVAP Canister Vent Valve: If the vent valve is faulty, replace the valve.
EVAP Lines and Hoses: Replace any damaged or leaking lines or hoses.
THANK YOU, HELPED ALOT. GREATLY APPRECIATE IT
You're welcome!
I have a chevy cruze with the 1.4L turbo. The PCV valve is under the valve cover and unaccessible without complete removal and replacement of the cover. Its throwing a code for lean air mixture. No rough idle no stalling no smoke but acceleration has been getting worse and highway driving is starting to be out of the picture. Although fuel economy is unchanged. The hose leading out from pcv valve has accumulated a small pool of clean oil ontop of my intake manifold. I dont have the tools or area needed to work on it. I have put it off for about 3 weeks now. Have I already damaged the engine severally?
Probably not. You have a turbocharged engine. It is possible that the turbo system/hose might have a leak somewhere. Good Luck.
I have a 2015 gmc sierra 5.3 it’s very shaky it stutters when tryna drive I’ve had codes for miss cylinder misfire I’ve changed coils plugs and wires AC/delve it’s still doing the same thing engine lights blinks brake light on and traction control/ abs I need help
this video is gold!
2003 ford f150 5.4 replace pcv line is it ok to block off suction behind motor because i cant get behind supercharger
While you are working on it, sure. But then put it back again.
Is this where they switch it up with catch-can
Just to be aware - if your engine runs to rich or lean in air fuel mixture - IT WILL generally illuminate your check engine light 🧐👍
I have a 2011 ford bantam rocam only when its hot it will smoke white blue and when starting.when cold there is no problem i thought of this valve can it be the problem?
NEED HELP: I have a 2004 Mercury Mountaineer V8 is was running great. However, it starting a little jerk every blue moon when I would hit the gas while drive but it was sporadic. It still drove great. At red lights, if idle too long it would sound like it was loosing power & shake a little. I would hit the gas pedal but it would take the gas 2 seconds slower than usual. Yday, it died at the red light. Took it to O'Reilly this morning to check the codes. It gave primary DTC Fuel System Too Lean (Cylinder Bank 1). P0171 crankcase breather house and PCV valve. We replaced the PCV valve but it runs worse and won't stay crank. Please help me.
Your 2004 Mercury Mountaineer is likely experiencing a lean fuel condition due to the P0171 code, indicating not enough fuel or too much air entering cylinder bank 1. After replacing the PCV valve, ensure it’s properly installed and check for any vacuum leaks, especially in the crankcase breather hose. The fuel system should also be examined for clogs or pressure issues, as a failing fuel pump could contribute to the problem. Good Luck!
Probably timing issues
There should be a sensor that tells you when this is bad
I agree. But most cars do not seem to have it. Good Luck!
Agreed. Just had this happen recently on mine with no sensor alert.
@@fixit3879 let's mandate this and delete the EGR Valve lol
Ok I don't have a code reader and have run into an issue with my 2011 camry. The first start up in the morning is great. The engine cranks right up. After I have driven it for a few miles 10, 20 or 30 and let it sit for a moment it cranks, cranks and cranks then eventually starts up. I recently put in a new battery and replaced the air filter. Any suggestions where to go next?
I've been told the fuel pump, but the car idles and runs great other than the start up on a warm engine.
Sounds like the car is getting older and needs a tune up. I would drop a bottle of SeaFoam Can in the gas tank. Hit the highway for 1-2 hours. Check and replace spark plugs. The problem of course can be fuel related. So you would want to start with cheaper fix options: replace fuel filter, SeaFoam will help clean the fuel injectors. Go from there.
Hope this helps.
Also check out this Video on coolant temperature sensor, resulting in hard starts:
ua-cam.com/video/VxGDLTGOrCE/v-deo.html
Good Luck!
@@fixit3879 Ok thanks for everyone's help in helping me diagnose my car issue. I went ahead and replaced the fuel pump and everything seems to be working great. Around $400 because I couldn't find the exact replacement for my car anywhere else, but that's ok as long as it works.
Crank of cam sensor
@@freddy-vp2jp Yeah that was the fuel pump. I had this issue in one of my previous cars, it leaves you stranded!
UNSUAL ENGINE SOUNDS: No kidding, that thing had me thinking I messed up royally! I was thinking the injectors shorts, coil packs were fritzing, even worse that I was developing lift tick. I took it in and my shop laughed in relief "Audrey, it ain't electrical. It's the stupidest reason, come on back, take a look at this! It's the dang PCV valve, take it back!" I am starting to believe Autozone is trash!!!
Will this also cause my engine to drive rough when I turn on my air condition?
Yes, a bad PCV (Positive Crankcase Ventilation) valve can cause your engine to run rough, especially under additional loads like when the air conditioning is turned on, as it affects engine vacuum and performance. Replacing a faulty PCV valve may improve engine stability and performance. Good Luck!
My vechile blow light grey smoke when crank then the smoke goes away. Will this be because of the pcv valve?
Sounds like valve cover gaskets to me mine does that
GOOD TIPS THANKS.
no mention was made of the valve cover baffles which is part of the PCV system isnt it......when the baffles get clogged with carbon it affects the PCV system and cause high oil consumtio doesnt it? I find so
I can’t get the pcv valve out , I’ve tried everything and it won’t budge , I’m just stuck with what I’ve got .
Take it to a shop or the dealer
My 1987 porsche 911 smokes.when starts up Do you think it's a pcv value ?😢😅
If your 1987 Porsche 911 smokes on startup, a faulty PCV (Positive Crankcase Ventilation) valve could be a potential cause. The PCV valve helps regulate the flow of gases and can lead to smoking if it's clogged or malfunctioning. However, it's also worth checking other potential issues like valve seals, oil leaks, or worn piston rings, as these could contribute to smoking as well. Thank you for sharing. What other symptoms do you have?
Where is pcv valve position in Daewoo Nubira 1.6
If there is air coming out of the oil cap, does it mean it is also the pcv valve or is it normal?
That's blow up. Could be bad worn piston rings
Air escaping from the oil cap could mean a faulty PCV valve or excess crankcase pressure. It’s worth checking the PCV valve and having the engine inspected if the air flow is significant or there are other symptoms.
Great explanation and visuals! Thanks!
We are glad you found it helpful. Thank you!
Y number 3 is pvc?
Po174 code. Running lean. Hose Will be leaking or pcv valve will be clogged. They must be replaced. Also engine will smell for years.
I have a code p0440 What code is that and how can I fix it? Help
EVAP system. look for a leak.
@@Sam-f1k8e okay Where can I check if there is a leak bro
@@tonycervantes4816 just change your PCV most are ~$10. look for cracked hoses and squeeze them. the pcv discharges into your air intake usually at the throttle. spray carburetor cleaner gently and slowly. when you hear it rev up you, found a leak.
i think i Have all these symptioms in my car. but lately is overheating as well... how can it be connected??
It might be a faulty thermostat, radiator cap, radiator hoses, or a small leak in the AC system. The first thing I would highly recommend is getting an AC system pressure test done to check and see if you have any coolant leaks.
Also, before you start your vehicle, take off the radiator cap and check if the coolant level is where it should be. Also, start your vehicle and look under the hood and underneath the vehicle to see if you spot any visual leaks. If you are not sure, just take it to a mechanic shop if it makes you comfortable.
@@DanielShepherdjr thanks, will do. but cannot also be that the oil is forming sludge and so causing to overheat?? or even sludge formation should not cause the overheating??
@carlosandresparra9306 Not necessarily always the case, but it is something to look at. There are good engine flush products you can try, like Liqui Moly Engine Flush, but if you go that route, I highly recommend you use Liqui Moly motor oil from that point forward after performing the engine flush.
Years ago I bought a used car that started having engine overheating issues. The radiator was clogged with some form of liquid seal product the previous owner used on a car. So sometimes flushing the radiator might also help too.
Good Luck.
thank you
I thought it was a pressure control valve otherwise it would be a pccv. Am i wrong
I have Camry 2015 LE. I wanted to it replaced with new one as my car consuming engine oil. I realised that PC valve is at very difficult location. Now I have valve lying in my glove box. Even a mechanic was unable to replace it. 😂
I started having rough & high idle, slight hesitation upto 20 kmph speed & sometimes AC Compressor tripping until car runs below 40 kmph INTERMITTENTLY, after I got an oil change in my ‘09 ES350. It started after I had mistakenly switched from 5W30 to 10W40 on the wrong advice of the oil shop guy once. Back to 5W30 now, spark plugs are new, throttle body is clean, air filter is perfect, sensors are fine, no Check Engine light and I got the injectors cleaned as well. After injectors job it stayed fine for a few days then started everything again.
I didn’t touch the PCV, Fuel filter or pump yet.
The only codes I have are of timing chain (advance and retard).
Could it be the PCV or what??
No has been able to diagnose it yet maybe coz it’s intermittent.
KINDLY ADVICE! 🙏🏽 THANK YOU!
It still comes out of the system. May as well just run it straight to the exhaust. Greenies ruin everything
Thank you for sharing. Good Luck!
That's why you end up with dirty valves the PCV valve is the culprit.
I agree. Thank you for the comment.
It's the one part that needs to be changed every 20 to 30k miles
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3:55 PVC valve 😂
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When the human race is done
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Code word acknowledged. Thank you for sharing!
👍💪✌️💙🏇🏇🏇
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Glad you found it helpful. Thank you for sharing.
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hmmm.... Thank you for sharing.
Smart video
I think the EGR valve made this redundant.
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