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Mazda PCV Valve Replacement

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Mazda PCV Valve Replacement

Mazda United States PCV Valve Mazda United States PCV Valve Mazda  PCV Valve Mazda  PCV Valve Mazda United States PCV Valve
Mazda United States PCV Valve Mazda  PCV Valve Mazda United States PCV Valve Mazda United States PCV Valve Mazda  PCV Valve



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What is a PCV valve?
The Positive Crankcase Ventilation valve, or PCV valve, is a valve that resides within the crankcase where the crankshaft is housed and protected. The valve allows gases and emissions, let into the crankcase through the pistons, to escape. If the valve was not present, the build up of pressure would exceed the limits of the crankcase. You may be thinking that pistons should not allow for emissions to pass into the crankcase as they have rings, boots, and seals to form a pressure tight system. This assumption is correct, but mainly in worn or damaged pistons, small amounts of emissions get through during the up and down stroke motion of the crank. The PCV valve is part of an overall ventilation system which redirects these leaked gases back into the intake manifold for additional air to aid in further combustion.

How do I know if my PCV valve is going bad?
You do not always get signs that your PCV valve is failing. That's why it's very important to keep up on factory recommended maintenance and replacement intervals. If there are any visible signs, you would experience rough idle, rough or sporadic sensation during acceleration, possible piston misfiring, and possible backfire of built up emissions. The car may also act and smell as if it were running “rich” which implies a heavier presence of fuel compared to air in the mixture needed for combustion.

How do I replace it?
The valve itself is not that difficult to replace. After accessing it, you would disconnect the breather tube, unscrew it from the crankcase, install the replacement by screwing it into the crank case, and then re-attach the breather tube making sure all connections were tightened adequately. The difficult part is accessing the PCV valve as it may require the removal of many other components in order to replace it. Consult your owner's manual or local dealer service department for more information.

When is the valve most important?
The PCV valve is under heaviest stress during acceleration as that is when the most emissions would be released from worn cylinders. That is also when you will most likely feel the effects of a worn PCV valve. At idle and full throttle, the PCV valve is almost useless as the force of the vacuum in those two states is greatest and emissions aren't usually a problem.

What's the best way to maintain the valve?
The best way to maintain your PCV vale is by listening to your parents' old adage about changing your oil every three thousand miles. PCV valves get worn by collecting dirt, grit, and engine particles from old and dirty oil. They can clog the valve and render it ineffective. Also, keep up on factory recommended maintenance schedules which include a replacement interval for a new PCV valve.

Latest Mazda PCV Valve Applications

95-02 Mazda Millenia 2.3 V6 2.3DOHC United States PCV Valve border= United States PCV Valve
95-02 Mazda Millenia 2.3 V6 2.3DOHC At cam cover PCV Valve
  PCV Valve
04-08 Mazda 6i Hatchback 2.3L MZR For Vehicles Equipped
W/ Roof Antenna PCV Valve
86 -  Mazda B2000 2WD Pickup 2.0 United States PCV Valve border= United States PCV Valve
86 - Mazda B2000 2WD Pickup 2.0 PCV Valve
 - 98 Mazda Protege ES 1.8DOHC United States PCV Valve border= United States PCV Valve
- 98 Mazda Protege ES 1.8DOHC PCV Valve
98-02 Mazda 626 2.0 United States PCV Valve border= United States PCV Valve
98-02 Mazda 626 2.0 PCV Valve
 - 07/88 Mazda 929 V6 3.0 SOHC 3.0SOHC United States PCV Valve border= United States PCV Valve
- 07/88 Mazda 929 V6 3.0 SOHC 3.0SOHC PCV Valve
95 - 00 Mazda B4000 2WD V6 Pickup 4.0 United States PCV Valve border= United States PCV Valve
95 - 00 Mazda B4000 2WD V6 Pickup 4.0 PCV Valve
98-01 Mazda B2500 2WD Pickup 2.5  PCV Valve border= PCV Valve
98-01 Mazda B2500 2WD Pickup 2.5 PCV Valve
89 -  Mazda B2600 2WD Pickup 2.6  PCV Valve border= PCV Valve
89 - Mazda B2600 2WD Pickup 2.6 PCV Valve
 - 04 Mazda Tribute 2WD V6 3.0  PCV Valve border= PCV Valve
- 04 Mazda Tribute 2WD V6 3.0 PCV Valve
03-03 Mazda Protege Speed Turbo 2.0DOHC United States PCV Valve border= United States PCV Valve
03-03 Mazda Protege Speed Turbo 2.0DOHC PCV Valve
89-95 Mazda MPV 2WD 2.6SOHC  PCV Valve border= PCV Valve
89-95 Mazda MPV 2WD 2.6SOHC PCV Valve
99 -  Mazda Protege ES 1.8DOHC United States PCV Valve border= United States PCV Valve
99 - Mazda Protege ES 1.8DOHC PCV Valve
90-93 Mazda Miata 1.6DOHC United States PCV Valve border= United States PCV Valve
90-93 Mazda Miata 1.6DOHC PCV Valve
  PCV Valve
04-09 Mazda 3 2.0L 4Dr Sedan DOHC16V PCV Valve
88-92 Mazda 626 MX6 2.2 United States PCV Valve border= United States PCV Valve
88-92 Mazda 626 MX6 2.2 PCV Valve
94-96 Mazda MX3 16V DOHC 1.6DOHC United States PCV Valve border= United States PCV Valve
94-96 Mazda MX3 16V DOHC 1.6DOHC PCV Valve
83 -  Mazda 626 2.0 United States PCV Valve border= United States PCV Valve
83 - Mazda 626 2.0 PCV Valve
92-93 Mazda MX3 1.6SOHC United States PCV Valve border= United States PCV Valve
92-93 Mazda MX3 1.6SOHC PCV Valve
  PCV Valve
03-08 Mazda 6i Sedan 2.3L MZR For Vehicles Equipped
W/ Roof Antenna PCV Valve


Some Mazda PCV Valve Applications (View Full Catalog Above)

Mazda 3 2.0L 4Dr Sedan Mazda 3 2.3L 4Dr Sedan Mazda 3 2.3L 5Dr Hatchback
Mazda 323 Hatchback Mazda 626 Mazda 626 V6
Mazda 626 MX6 Mazda 626 MX6 V6 Mazda 6i Hatchback 2.3L
Mazda 6i Sedan 2.3L Mazda 6s Sedan 3.0L V6 Mazda 929 V6 3.0 SOHC
Mazda B2000 2WD Pickup Mazda B2500 2WD Pickup Mazda B2600 2WD Pickup
Mazda B2600 4WD Pickup Mazda B4000 2WD V6 Pickup Mazda Miata
Mazda Millenia 2.3 V6 Mazda Millenia 2.5 V6 Mazda MPV 2.5 V6
Mazda MPV 2WD Mazda MPV 2WD V6 Mazda MPV 3.0 V6
Mazda MPV 4WD V6 Mazda MX3 16V DOHC Mazda MX3
Mazda MX3 V6 Mazda Protege 5 Mazda Protege DX, LX
Mazda Protege DX,ES,LX,MP3 Mazda Protege ES Mazda Protege LX
Mazda Protege SE, DX Mazda Protege Speed Turbo Mazda Tribute 2WD V6
Mazda Tribute 4WD V6

1.5DOHC 1.6DOHC 1.6SOHC 1.8DOHC 1.8SOHC 2.0 2.0DOHC 2.2
2.3DOHC 2.5 2.5DOHC 2.6 2.6SOHC 3.0 3.0SOHC 4.0
DOHC16V MZI MZR


More Applications (View Full Catalog Above)

Acura Audi Cadillac Chevrolet Chrysler Dodge Eagle Ford
Geo GMC Honda Hyundai Infiniti Isuzu Jaguar Jeep
Kia Lexus Mercedes Benz Mercury Mitsubishi Nissan Oldsmobile Plymouth
Rover Saab Scion Subaru Suzuki Toyota Volkswagen
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