PCV Valve replacement - Page 2 - Mazda3 Forums : The #1 Mazda 3 Forum
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post #11 of 16 (permalink) Old 07-28-2018, 12:41 PM
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Originally Posted by VWandDodge View Post
No, but he'll be digging around in the engine bay, plus he wants to head off the dreaded "oil consumption" issue. So, while he's in there, why not tackle this at the same time?
With that advice you must be trying out for the position of service advisor at a dishonest shop ."Digging around in the engine bay" =/= "While you're in there." "While you're in there" implies that something related to the other job has already been removed, like changing the thermostat while you already have the coolant drained to replace the radiator or replacing the rear spark plugs on a transverse V6 because the intake manifold is already off to replace the gasket. The valve cover gasket doesn't meet this definition while the intake manifold is removed. Given that its easy to get to there is no reason to replace the valve cover gasket unless its leaking, mine has 117K miles and is still dry as a bone.
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post #12 of 16 (permalink) Old 07-28-2018, 12:59 PM
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We ( The shop)would only replace the authorized parts, but would recomend other parts while in the area because of the savings considering labor of separate parts. i.e. one example, V8 very high mileage engine with coil-in plug, one coil labor is 80 bucks while all 4 on one bank is 20 dollars more @ 100. Sure you will spend more for parts, additional 3 other coils but the chances of others failing are a consideration balanced between intended use of the vehicle and budget. Pay a little more now or much more later?

DIY (do it yourself) IMHO ( I always do myself) while in a an area needing removal of parts to get to the part needing to be replaced, should replace gaskets and seals, clean all parts like sensors and connectors wire coverings, and wipe down all surrounding parts that are close and now mostly accessible while the target part is being replaced.

.....do a job once or do it several times....
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post #13 of 16 (permalink) Old 07-28-2018, 05:11 PM
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Originally Posted by madmatt2024 View Post
With that advice you must be trying out for the position of service advisor at a dishonest shop ."Digging around in the engine bay" =/= "While you're in there." "While you're in there" implies that something related to the other job has already been removed, like changing the thermostat while you already have the coolant drained to replace the radiator or replacing the rear spark plugs on a transverse V6 because the intake manifold is already off to replace the gasket. The valve cover gasket doesn't meet this definition while the intake manifold is removed. Given that its easy to get to there is no reason to replace the valve cover gasket unless its leaking, mine has 117K miles and is still dry as a bone.
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Originally Posted by M3RacerX View Post
We ( The shop)would only replace the authorized parts, but would recomend other parts while in the area because of the savings considering labor of separate parts. i.e. one example, V8 very high mileage engine with coil-in plug, one coil labor is 80 bucks while all 4 on one bank is 20 dollars more @ 100. Sure you will spend more for parts, additional 3 other coils but the chances of others failing are a consideration balanced between intended use of the vehicle and budget. Pay a little more now or much more later?

DIY (do it yourself) IMHO ( I always do myself) while in a an area needing removal of parts to get to the part needing to be replaced, should replace gaskets and seals, clean all parts like sensors and connectors wire coverings, and wipe down all surrounding parts that are close and now mostly accessible while the target part is being replaced.

.....do a job once or do it several times....
As M3RacerX points out, this is advice from one DIY guy to the other. The OP says he's trying to head off the infamous oil consumption issue the 2.3L engine has, so he's going to replace the PCV. I've found information which states the OE valve cover gasket was a bad design. Plus, I noted in the thread which deals with the valve cover gasket that two of the plugs for my vehicle had oil soaked threads and several of the fasteners were loose. I don't know about you, but IMHO I would love for someone to tell me "Hey, as long as you're working in there, here are some other areas you might want to look into to prevent potential problems." Better to spend a single afternoon rooting around, under the hood, than many separate times.
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post #14 of 16 (permalink) Old 01-23-2019, 11:15 AM
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PCV solved oil consumption?

Hello. I have a Mazda 3 2.3L 2006 GT with 176K kms. It is consuming 1 quart of oil every 500km. No sign of oil leaks on the ground.
I wanted to know if your PCV swap solved your oil consumption issue?

Also, if I get it done by a shop, how many hours of labor is needed to take off the intake manifold and put it back?

Thanks
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post #15 of 16 (permalink) Old 01-23-2019, 10:23 PM
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Originally Posted by FAMZ View Post
Hello. I have a Mazda 3 2.3L 2006 GT with 176K kms. It is consuming 1 quart of oil every 500km. No sign of oil leaks on the ground.
I wanted to know if your PCV swap solved your oil consumption issue?

Also, if I get it done by a shop, how many hours of labor is needed to take off the intake manifold and put it back?

Thanks
The part is under $10. Fixed dealer rates 3hrs. It's located under the intake manifod
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post #16 of 16 (permalink) Old 01-26-2019, 08:53 AM
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I'm betting a lot of oil consumption issues are due to a the faulty stock valve cover gasket. Check if any fasteners for the valve cover are loose. Also, pull the spark plugs to see if any have oil on the threads. Oil on the threads indicate the valve cover gasket is bad and letting oil slip by. It's a relatively simple job, and this video is a great How To: https://youtu.be/nCp0LyYlqs8

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