Intake valve cleaning from carbon build up

[G-861620]

I use this product: CRC GDI IVD intake valve and turbo cleaner - every 7-9k miles.

Hi. Can you explain how you applied the crc? Do you just remove the air filter, or is it more involved?

 

[Husam]

I use this product: CRC GDI IVD intake valve and turbo cleaner - every 7-9k miles.

If you could post a video showing how you applied crc it would be helpful.

 

[RyanB]

Hi. Can you explain how you applied the crc? Do you just remove the air filter, or is it more involved?

Get the engine warm then you loosen the air intake flex boot on the throttle body and slide the plastic tube from the CRC under the flexable rubber boot and into the the throttle body but do not let it touch the internal parts of the throtte body. Tighten the clamps back up on the flex boot and while someone is in the car reving the engine to about 2000-3000 rmp spray the entire can in and then turn off the engine. Remove the plastic tube from the throttle body and retighten the clamps. Let it sit for a few minutes then go for a spirited drive to burn it off. I have done this with the seafoam verison many times and it just takes a few minutes at most. It will take longer draining the can than setting it up.

How to use Sea Foam Spray | Sea Foam Sales Company

HOW TO USE CRC GDI IVD® INTAKE VALVE & TURBO CLEANER - CRC Industries | Global Supplier of Chemical Specialty Products

 

[zape]

I wonder if you could show me exactly how and where exactly you'd spray CRC cleaner passed the MAF sensors in Genesis g80. I couldn't find out how. Also, will that throw any error codes?

Did you figure it out?
I see two sensors one on the air filter and one downstream the intake tube
Update: checked the part number on the sensors and they appear to be two MAP sensors:
kefico 39300-3c300
kefico 39300-3c500
If I read it right

 

[zape]

So I detached the air filter and sprayed this CRC cleaner, I'm afraid it will not be very effective, because the intake tube is too long, and much of the spray simply did not get in the engine but instead left in the intake tube itself and a small chamber underneath. Now I'm wondering if this might be a problem. Or it will evaporate in some time and eventually get in the engine.

 

[Husam]

Did you figure it out?
I see two sensors one on the air filter and one downstream the intake tube
Update: checked the part number on the sensors and they appear to be two MAP sensors:
kefico 39300-3c300
kefico 39300-3c500
If I read it right

Well, not quite.. Do I have to spray CRC passed the 2nd sensor, the one shown in top of the picture you attached? If yes, how exactly?

 

[Husam]

I use this product: CRC GDI IVD intake valve and turbo cleaner - every 7-9k miles.

Could you show me exactly where to spray the cleaner? A picture would be helpful

 

[G-257746]

Does anyone know if a dealer would do the cleaning for you? Do you just ask for carbon cleaning or whatever? How much does that cost?

 

[Gahaha]

Anyone here have any experience in having dealer clean off the carbon? Do they actually do it? Also how much do they charge?

 

[Husam]

Can of Seafoam sucked into the intake through a vacuum hose. Let it sit for 15 minutes. Blow it all out with some high revs. Done!
Repeat often

Where is the vacuum hose exactly? I couldn't spot it on my 3.8 L 2015 Genesis.

Let me know please.

Thank you,

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[Bradski]

Where is the vacuum hose exactly? I couldn't spot it on my 3.8 L 2015 Genesis.

Let me know please.

Thank you,

 

[Bradski]

First post here.

I did mine by spraying into the PCV hose. Look for the hose just to the right of the second air sensor. Follow it over the top of the intake and unclamp where it attaches to the PCV.

I just bought a 2017 g80 3.8 and have been reading these forums with interest after seeing partially blackened muffler trim at only 20,000 miles. In fact, I saw an older Gen on the interstate the other day that was so heavy coated, it looked like an old diesel truck.

My g80 runs fine. After I bought it with my first fill up with TT gas, I put in a bottle of Red Line SI-1. I've used this and Techron for years at every oil change for all family cars.

Using the CRC today I just followed the directions on the can. It did take a little time to empty the can with short bursts. At the end of spraying I started to hear some knocking and rattling in the IM, but it quieted down fairly quickly. I let the car sit for an hour. The car rattled again and smoked about halfway down the street (which was somewhat embarrassing) but cleared right up after hitting the road. I drove about 20 minutes at > highway speeds and it ran fine. No CELs and purred like a kitten. When I got home, I think I could even see where some of the black on the muffler trim was gone.

I'll change the oil this weekend with full synthetic and might throw in a bottle of Techron for good measure. Then on to polishing the pillars. Kind of odd that the drivers side only are pretty oxided and passeneger side look almost new. Must have been parked the same direction in the FL sun for awhile.

 

[Husam]

First post here.

I did mine by spraying into the PCV hose. Look for the hose just to the right of the second air sensor. Follow it over the top of the intake and unclamp where it attaches to the PCV.

I just bought a 2017 g80 3.8 and have been reading these forums with interest after seeing partially blackened muffler trim at only 20,000 miles. In fact, I saw an older Gen on the interstate the other day that was so heavy coated, it looked like an old diesel truck.

My g80 runs fine. After I bought it with my first fill up with TT gas, I put in a bottle of Red Line SI-1. I've used this and Techron for years at every oil change for all family cars.

Using the CRC today I just followed the directions on the can. It did take a little time to empty the can with short bursts. At the end of spraying I started to hear some knocking and rattling in the IM, but it quieted down fairly quickly. I let the car sit for an hour. The car rattled again and smoked about halfway down the street (which was somewhat embarrassing) but cleared right up after hitting the road. I drove about 20 minutes at > highway speeds and it ran fine. No CELs and purred like a kitten. When I got home, I think I could even see where some of the black on the muffler trim was gone.

I'll change the oil this weekend with full synthetic and might throw in a bottle of Techron for good measure. Then on to polishing the pillars. Kind of odd that the drivers side only are pretty oxided and passeneger side look almost new. Must have been parked the same direction in the FL sun for awhile.

Thanks for the update.. It would be great if you could post a picture of the PCV location to show where you sprayed CRC.

 

[Bradski]

Thanks for the update.. It would be great if you could post a picture of the PCV location to show where you sprayed CRC.

Not pretty pics, but you should be able to locate. Next time, I'm going to buy a length of hose to insert into the PCV hose so I can sit in the car and keep RPM up. I asked a SA at the dealer and he said they just use some Techron additive. He added the FDI is so new, that they have no really seen any issues with carbon buildup...will prolly ask someone else again when I go back.

 

[Husam]

Not pretty pics, but you should be able to locate. Next time, I'm going to buy a length of hose to insert into the PCV hose so I can sit in the car and keep RPM up. I asked a SA at the dealer and he said they just use some Techron additive. He added the FDI is so new, that they have no really seen any issues with carbon buildup...will prolly ask someone else again when I go back.View attachment 29260View attachment 29261View attachment 29262View attachment 29261

Excellent bro. Thanks a lot

 

[Andyj]

Intake valve cleaning service today. Fed a 11 oz can of CRC through the brake vacuum line leading to the intake manifold. Now wait 1 hour and go fast for 10 minutes.

 

[SuperKing]

I used a can of Seafoam a few weeks ago. Didn't really get a lot of smoke out of the car. Either the valves are clean or the product doesn't do much.

 

[zape]

Intake valve cleaning service today. Fed a 11 oz can of CRC through the brake vacuum line leading to the intake manifold. Now wait 1 hour and go fast for 10 minutes.

Is this where you sprayed the can down?
Did you have someone keeping the RPMs up while you did this?

 

[Andyj]

Is this where you sprayed the can down?
Did you have someone keeping the RPMs up while you did this?

No, not the metal tube with the 90% bend. The hose I used is the one behind your red arrow. I believe this is the vacuum hose between the brake booster nipple and the intake manifold. It runs across the top of the intake. I should have taken the picture while the hose was off.

I disconnected this hose by loosening the clamp and pulling the hose up off the rigid nipple below it, and up away from the manifold top. I then inserted the CRC can's plastic straw nozzle into the hose leading to the manifold. The vacuum suction is quite strong and sucks the stuff in well. Takes a while, i'd say close to 10 minutes to suck in the whole can. My son was in the car keeping the throttle at 2,000 rpm, and not more than 3,500 rpm per the instructions. Then a couple of revs up to 3500 rpm, and it sat for an hour. Went for a spirited drive; not fast but higher rpm in lower gears. Not much smoke came out although did get some carbon discoloration on the exhaust tips which is expected. There are YouTube videos on this process but with other cars like a Veloster.

There are other vacuum hoses you can use but this one is convenient and enters the intake manifold downstream of a bunch of stuff. I plan on doing this every other oil change. Should help reduce carbon buildup.

 

[zape]

So you sprayed it into this long hose that runs on the top, why not spray it on the other end as shown below?