3.3TT How are Stinger owners cleaning their valves on their GDI engines?

[Rafael]

Is this prior to cleaning or after?

 

[Rakker]

@Rakker

Show me what it looks like

 

[STINGER]

Is this prior to cleaning or after?

Prior, still didnt clean it yet.

 

[Rafael]

Prior, still didnt clean it yet.

They are in good shape.

 

[Hawk853]

This was the earlier post with a photo of what I assume is a BMW getting cleaned.

Show me what it looks like

Walnut blasting is the most effective method, we just need someone to 3D print the piece that snuggly fits on the intake port of the stinger so we can connect the vacuum and pressure nozzle at the same time. I have seen people modify a rubber hose to work but it not as good at keeping the walnut from going around.

Something like this that is made for Audi/BMWs etc,

 

[STINGER]

Found a local guy specializing in walnut blasting and took the car to him. Work still ongoing, should be ready tom. Pics so far attached.

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Doing injector cleaning as well.

 

[STINGER]

Here is the full post,

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Car feels smoother and idles better.

 

[runner1]

90 percent of us won’t have these cars in 5-6 years so I have to admit at 60-70000 km I’ll just trade it in and won’t even worry. My guess is these cars go160,000miles(200,000km) carefree without valve cleaning making 95% the power they did new

 

[Slip_Angle]

Not much for deposits, just an even coating. I would think you could easily double that mileage before needing to walnut blast it. Looks real nice after though!

How much did that cost?

 

[CKeeler]

I’m going to have to get the CRC cleaner soon. I’ve got almost 42k on mine. Mostly highway cruising.

 

[STINGER]

Not much for deposits, just an even coating. I would think you could easily double that mileage before needing to walnut blast it. Looks real nice after though!

How much did that cost?

I think my OCC and WMI combo and the BG intake valve cleaning the dealer does played a role in my car having less than ordinary build up. Other DI cars usually have double the build up my car had with similar mileage.

 

[Hawk853]

Not much for deposits, just an even coating. I would think you could easily double that mileage before needing to walnut blast it. Looks real nice after though!

How much did that cost?

Both @General_Vodka and I have snapped some pictures of the intake valves.

Here is one set of intake runners on my G70, this is at about 8,700 miles. Dual catch can was installed around 2,000 miles.
View attachment 46460


While a catch can will help with carbon buildup in the intake valves, it won't completely stop it.

For cleaning, I recommend CRC GDI intake valve cleaner, or something equivalent, and spray the valves directly (when closed) by removing the surge tank and intake manifold, then allow the spray to sit for a few minutes. It literally dissolves the carbon. Scrub them a little with a toothbrush, then suck up the excess fluid and wipe things down with a shop towel. Repeat for the rest of the cylinders. You will have to rotate the crank by hand to make sure the next set of valves are closed before spraying.

It's time consuming, but no special tools are needed, and it results in beautifully carbon-free valves.

@Slip_Angle Here’s Todd’s at 8,700 miles for another perspective of buildup rate.
There are You Tubes of scoped high mileage intakes that had no (CRC/catch can) intervention; they were incredibly gunked up.

 

[MyNaga]

just had my spark plugs replaced and my friend who works as a kia tech removed the manifold...we looked at the valves and he noted how clean they were for 30k miles...that wmi definitely does something

 

[Eastcoaststinger]

I wouldn’t go so far to say that, they just help mitigate. People shouldn’t expect catch cans to be a total solution. Oil still makes it down the valve guides and seals and some probably makes it past the cans as a light vapor. The less the CRC has to break down the better.

On my truck my can catches what looks like a vomit-like water/oil sludge during the winter. Definitely don’t need that stuff recirculating. I have yet to see if the Stinger has the same issue.

Yes my stinger is the same way in the winter time and I have to empty the catch can more frequently too

 

[Rafael]

The dealer recommends to take your Stinger every 7,500 miles in for a fuel system additive to clean your fuel system. After some research I found out they just Techron complete fuel system. Now you can buy this at any part store or Walmart for like 6 bucks. I believe the dealer charges like 60 bucks for the service. So why not just buy the bottle and pour it yourself? I found out that thy also put some valve cleaner up the air vacuum to clean the air valves since its GDI.

What are you using to clean your valves? What procedure are you doing?

Please share your experiences. Trying to save some money but I am also trying to prolong the life of my engine.

I use CRC intake valve and turbo cleaner right before every oil change. It’s easy to use. Follow the directions on the can. You really feel the difference after the treatment. It is crucial that you clean the valves and turbos BEFORE you change the oil, that way you you can slough off all the dirt when draining the oil.

 

[stoopid]

Found a local guy specializing in walnut blasting and took the car to him. Work still ongoing, should be ready tom. Pics so far attached.

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Doing injector cleaning as well.

Those valves don't look that bad, assume you have a catch can?

Mirroring some prior posts, few of us will own these cars long enough to notice any issues directly related to buildup on the valves. For those of us who drive spiritedly with 50k+ miles and no catch can, it would be wise to walnut blast. Honestly, I don't race from light to light. The rate of buildup on my engine isn't going to be very fast, so I'm likely to wait until there's a noticeable issue and just deal with it then knowing there's a chance I may never experience any issues or sell the car before.

 

[Username]

BG intakes gdi service

 

[Hawk853]

Yes my stinger is the same way in the winter time and I have to empty the catch can more frequently too

I did an oil change two weeks ago and my first cold-weather catch can check for the Stinger.

There was lots of watery sludge in the bottom and a much larger volume than the summer months.

The crank case can looked the same as always, very little.

(Sxth Element Dual Catch Cans)

 

[Ohiocruiser]

Looks like the manual carbon build up cleaning will be part of the maintenance item along with spark plugs replacement about every 40k miles, for my stinger.

 

[EClapp3]

Get a catch can and put a bottle of fuel injector cleaner in the gas tank every now and again and run a can of seafoam valve cleaner every 20k miles and you'll be fine.