DEBACLE an PCV valve replacement on 2010 Mazda 6 GH

[@MatoPityu]

I don't understand why you had to disconnect the fuel line. Couldn't you have removed the intake manifold without taking off the fuel line? It seems like it would have fit just fine. Thanks you answer.

[@KlavsX_]

To make things easier. Probably you could leave the fuel system attached, but I decided for the video and recording space to remove them. + ( on the side, I tested the injectors if they aren't faulty or clogged). 2 birds in 1 shot

[@MatoPityu]

​@@KlavsX_Thank you very much. I'm also facing a replacement, but I don't want to disturb the fuel system."

[@KlavsX_]

🤔 It all depends if you have to work on the same engine, there are 2 types of engines. But you can easily remove only the fuel rail with the injectors, without separating it from the fuel hose, that is a possibility too.

[@sarin62]

This is the best video about this job on youtube. 👍. Do you have any information about the transmussion torque sequence and bolt pattern on a mazda 3 pan?. Cheers

[@KlavsX_]

Usually if you don't have any information on bolt patterns or torque sequences. The fall back for bolt pattern is do: star shape pattern, or opposite from the one you started, to tighten the pan / gaskets evenly. For torque you start hand tight, then half the torque required and the third time the torque recommended.

[@sarin62]

@@KlavsX_ Thankyou 👍

[@KlavsX_]

You are welcome and good luck 👍

[@sunandar94]

turn the steering wheel all the way to the right, then turn it all the way to the left and return it to straight. The key position is on.

[@KlavsX_]

Sadly that method doesn't work on my gh model. I wish they would turn back to that

[@BB-zi5wi]

Hi Klavs, just discovered yor channel, wich engine do you have (was really not expecting to be such a nightmare of an engine to work on)...was thinking to buy the petrol 2.5 but after watching this i have serious doubts...

[@KlavsX_]

Hi. Yeah, this is a 4 cylinder 2.5 L petrol. Oh, you will be out of luck on the diesels too. The pcv valve on some of diesels is at the back of the engine. There's 1 engine that has the valve in a good-ish location, though, don't know what engine it is exactly

[@BB-zi5wi]

Thanks, awesome channel by the way! 🍻

[@KiwiBro8]

Holy heck that was a lot of work to replace a tiny plastic part

[@KlavsX_]

😅 it is, and that part opens up to more spending, as there are together 6 gaskets, that you should change... yeah.

[@forTrad-d9h]

Hello! How did you determine that this valve needed replacing?

[@KlavsX_]

was using a lot fuel and didn't had much power.

[@IjustWantToEat]

@@KlavsX_does the mazda 6 2010 have an iacv, if so where is it located

[@KlavsX_]

my mazda doesn't, but if it would, then it should be next to / behind the throttle body.

[@carlsenesbjerg]

what was the reason you changed the pcv valve

[@KlavsX_]

rough idle and bad fuel consumption

[@rodrigod4]

Im having air pressure coming out by the dipstick hole, i checked the small hose coming from above the Air Intake, and its vacuuming, a mazda website says that means the PCV is okay, can you confirm this way of diagnosing the PCV?

[@KlavsX_]

the vacuum to PCV, it isn't the only way, but one of them. But you might have a bigger problem, dipstick is connected to the oil pan, is your car idling / driving normally?

[@rodrigod4]

@@KlavsX_ yes the idling is not doing anything strange, just about 1000 RPM for a while on start, and then totally stable around 600 RPM, during driving it doesnt do anything weird, however i feel like its a bit weak, but cant say for sure as i havent ever had another cx5 2.0

[@KlavsX_]

When was the last service on spark plugs / fuel filter / oil / and all air filters? That could be one of the causes of the weak.

[@rodrigod4]

@@KlavsX_ i have only replaced spark plugs, its suposeedly up for 10k oil replacement in about 1.5, but i will do it all this week, thanks for the info, i will comment again after doing these changes

[@Leo555ZZZ]

Good video and advice ,,thanks.

[@KlavsX_]

Glad this video could help

[@rodrigod4]

seems to be the same for cx5 2016, anyone can confirm?

[@KlavsX_]

Is it? Even the same part number? That's interesting, that will open up possibilities and more parts

[@rodrigod4]

@@KlavsX_ at least structurally, its the same

[@rodrigod4]

It looks like there enough room to change the PCV from below without removing a single screw

[@KlavsX_]

😅 Good luck with that. Update us if you manage all that without removing a single screw. For video purpose I had to remove all that

[@rodrigod4]

@@KlavsX_ yeah i w doubt its really possible, but i wiill report later

[@KlavsX_]

It is possible, but, you will be under the car and fishing for bolts. It will be quiet time consuming process

[@rodrigod4]

@@KlavsX_ in the end we did it from above, but its doable from underside by removing the starter engine, however thats a bit pointless, as when we were removing the intake we realized that there was a lot of oil in parts that were suffering due to the failing PCV valve, the process of taking apart the whole air intake is perfectly justified: take apart, clean sensors, clean intake, then close again

[@KlavsX_]

@@rodrigod4 Sadly, that's one of the worse situacaions. It is doable from underneath, but nor I, and I can bet, you wouldn't recommend other people to do this job from the underside. Better do a bit more and have space and knowledge of situations with the seals, gaskets.