Jon316G

iTrader: (1)

The best way is to remove the upper intake manifold and spray down the secondary runners.
People suggest just spraying through the throttle body, but you're then spraying the mist blindly into the manifold where it can run down the primary, secondary, or auxiliary runners so its not really a focused spray.

And don't believe people if they suggest spraying into the maintenance ports.
The maintenance ports are on the primary runners and will never reach ANY of the intake valves.

@!!narotordo

Jon, how do I remove the intake manifold? or do I only remove the extension manifold? where do I start? what screws and bolts? do you have a jpg or diagram of what I need to remove?
thank you sir

Jon316G

iTrader: (1)

The upper intake manifold is the same thing as the intake manifold extension.
I don't have a pic of what to remove, but basically anything attached to it needs to be removed.
TIP: Have multiple extensions and wobble/u-joints available. You'll need them!

Julean

After I finished the removal, clean and refit of my valve, we could clearly see it operate when revving while parked in the workshop. The other thing to to is basically move it by hand and compare it to the other valve which is higher up and facing the other way. On my car they both now feel very free and spring back nicely to the stop position.

Jon316G

iTrader: (1)

Are you saying that the SSV moved on its own with the car sitting still and simply revving?
I've tried this on a couple cars and it never moved.
Watching a Renesis Training module verified my suspicions when it mentioned that you also need to be at a certain engine load (which requires you moving) for that valve to open.
I'll have to try this again...

rotarenvy

nice vid that sorted me out on what valves were what. I was mixing the aux port valves with the SSV valves

you can remove the upper manifold or follow the procedure listed above.
the UIM is just as hard to remove and you probably wouldn't get to the surfaces that are really stuck.

I would test the valves action by hand if it doesn't move as freely as it does in the vid then you should follow the Mazda procedure.

@!!narotordo

Hey Jon, take a look at the pix I got from RR from his "how to" thread.
Can you help me understand something. I want to use (if I can) seafoam to unclogg the thigamajig that gets stuck. You know the one you where jabbing at with a really long screw driver in the old pic when you helped that local out.
What I do is take the hose off the brake boster (see pic) and put it in the can of seafoam then crank the car. It gets choked out and wants to stall. To avoid the risk of flooding I do not give it any gas and **** the car off.
So where does all the seafoam go? (see second pic)
On a side note; some guy on youtube said he put some in the spark plug holes. Why did he do that? whats the bennefit? where do the holes lead to?

Jon316G

iTrader: (1)

That was the SSV. It took a LONG time spraying right onto the valve and moving the valve by hand until it was opened. Then sprayed the **** out of it and closed the valve. Then sprayed the **** out of it and opened the valve. etc etc etc
It took awhile doing that before the valve could be opened with a vacuum pump attached to the actuator.
If the SSV is truly stuck, its best to just remove the valve and clean it.
Soon as I have time, I'll try to make a DIY on how to do this.

To reduce the risk of flooding (or introducing gas into the chamber) you should disconnect the Eccentric Shaft sensor which is the same thing we do while cleaning the engine with SeaFoam.

If sprayed through the booster line (or the throttle body) and liquid can travel through any one of those passages/runners.
That's why I'm not a fan of this technique to "decarb" the SSV.

Again, spraying SeaFoam (or Mazda's ZOOMZOOM cleaner) into the engine is a way to decarb it and is a good thing to do every year or two.
No reason to spray it through the spark plug holes, we just use the maintenance ports on the side of the intake manifold.
This is so one person can crank the engine while the other is spraying into the maintenance ports for ten seconds.

Julean

It sure did. It is easily seen from the side of the car, and I have a video of it on my phone.I was revving to 7500 rpm in short burts from idle . Dont forget this is an Aussie version , so our software may be different to your US version.