Guide: Mazda 2.0 & 2.5L Valve Cover & Oil Control Valve Gasket replacement

[felixd]

Hi guys hope y’all doing well. I’m sharing with you another video.

Replacing Oil Control valve gasket seal & Rocker valve cover Gasket...

 

[yrwei52]

And thanks for yet another valuable video for CX-5 DIYers!

 

[Antoine]

Sweet! Thanks

Posted a link in our Resources section...

Mazda 2.0 & 2.5 Ltr Valve Cover & Oil Control Valve Gasket replacement

https://www.mazdas247.com/forum/index.php?threads/mazda-2-0-2-5-ltr-valve-cover-oil-control-valve-gasket-replacement.123873415/#post-6702026

www.mazdas247.com

 

[YABoringTech]

Thanks @felixd ! My Mazda3 has exactly that leak and on the back right side: You may have just saved me $400 or so from the stealership. The valve cover gasket still seems expensive, one thing I miss from my old Saturn was the gasket was just plain RTV compound. Is that what you're using as "liquid gasket" in the video?

 

[yrwei52]

Thanks @felixd ! My Mazda3 has exactly that leak and on the back right side: You may have just saved me $400 or so from the stealership. The valve cover gasket still seems expensive, one thing I miss from my old Saturn was the gasket was just plain RTV compound. Is that what you're using as "liquid gasket" in the video?

From Mazda CX-5 Factory Workshop Manual, the liquid gasket felixd mentioned in the video is the silicone sealant said in the manual which needs to be applied at several locations in addition to valve cover gasket. Any silicon RTV suitable for high temperature should be fine.

 

[felixd]

Thanks @felixd ! My Mazda3 has exactly that leak and on the back right side: You may have just saved me $400 or so from the stealership. The valve cover gasket still seems expensive, one thing I miss from my old Saturn was the gasket was just plain RTV compound. Is that what you're using as "liquid gasket" in the video?

I use high temp RTV.

 

[Dbfl]

I have heard other users in this repair having found out it was the OCV itself that was leaking. Keeping that in mind, and using the video for instruction I replaced all 3, OCV, OCV gasket, and valve cover gasket. Thanks for the video it was helpful.

 

[tomcat1446]

I use high temp RTV.

@felixd can you please provide a link for this high temp RTV that you used or show a picture? Thanks!

 

[yrwei52]

@felixd can you please provide a link for this high temp RTV that you used or show a picture? Thanks!

The “silicon sealant” mentioned in the workshop manual in post #5 above can be any high-temp RTVs like the following where both stated to be used on valve covers in application:

Permatex High-Temp Red RTV Silicone Gasket Maker

Category: Gasket Makers

OEM specified. Formulated for hi-temp applications, or heavy-duty use (such as towing, etc.). Replaces almost any cut gasket by making reliable formed-in-place gaskets that resist cracking, shrinking and migrating caused by thermal cycling. Coats pre-cut gaskets to increase reliability. Temperature range -65F to 650F (-54C to 343C) intermittent; resists auto and shop fluids.

Application

Automobile
Suggested Applications: Valve covers, oil pans, timing covers, water pumps, and thermostat housings.

Permatex Ultra Grey Rigid High-Torque RTV Silicone Gasket Maker

Category: Ultra Series Gasket Makers

OEM specified. Permatex Ultra silicones were developed to meet todays technology changes. Sensor-safe, low odor, noncorrosive. Outstanding oil resistance and joint movement tolerance. Eight times more flexible than cork/composite gaskets; three times more oil resistant than conventional silicones. Temperature range -65F to 500F (-54C to 260C) intermittent; resists auto and shop fluids and vibration.

Application

Automobile
Suggested Applications: Valve covers, oil pans, automatic transmission pans, intake manifold end seals, timing covers, water pumps, thermostat housings

Heavy Duty
Suggested Applications: Cover housing gasket, differential, assembly to rear axle housing, power dividers, axle shaft flanges