CRC Intake Valve Cleaner Question

[MrBrady]

Hello,

I have a 2014 Genesis 5.0 R-Spec with about 84,000 miles. I heard good things about running a GDI cleaner through it so I bought a can of CRC Intake Valve Cleaner and make sure the engine was nice and warm. Removed the vacuum line as shown in the photo and ran a hose to the inside of the car so I can spray and keep RPMs around 2,000.

There was a little bit of smoke out of the exhaust while spraying. Once the can was exhausted, I turned the car off and let it sit for an hour. When I turned it on, there was a little bit of smoke, but not an "embarrassing" amount as other have described.

Question is, is this the right vacuum line to tap into? Was there not a lot of smoke because I always use Chevron (top tier) gas?

Just want to make sure I did it all correctly.

EDIT: The only difference I've noticed is the idle seems a bit smoother and a bit lower RPM than before, but maybe it's placebo.

 

[rmod]

Just a suggestion... If you have never used the CRC before and are planning to use it from now, I'd recommend getting the intake valves professionally cleaned (physically cleaned) and then continue with regular CRC runs along with a catch can.
CRC does little to remove / clean any caked-on carbon on the valves. However, it may delay the buildup when using regularly on a new engine / cleaned valves.

 

[toxicavenger70]

I'd recommend getting the intake valves professionally cleaned (physically cleaned)

This requires the removal of the cylinder heads. Why would someone spend this kind of money for preventive maintenance? Sounds a little extreme to me.

 

[rmod]

This requires the removal of the cylinder heads

Probably removing just the intake manifold is enough. Nevertheless it will cost some money if done at a shop.

 

[joegr]

This requires the removal of the cylinder heads. Why would someone spend this kind of money for preventive maintenance? Sounds a little extreme to me.

No, it does not. Just the removal of the intake manifold.

 

[toxicavenger70]

No, it does not. Just the removal of the intake manifold.

You can actually remove the intake valves with only removing the intake manifold? There are not some kind of keepers or retainers than keep it in the cylinder heads?

 

[toxicavenger70]

Probably removing just the intake manifold is enough. Nevertheless it will cost some money if done at a shop.

I would like to see how this is done. Most valves tend to have more build up on the back of them and not the front.

 

[joegr]

You can actually remove the intake valves with only removing the intake manifold? There are not some kind of keepers or retainers than keep it in the cylinder heads?

There is no reason to remove the valves to clean them. Why would you? You'd have to clean them to be able to remove them anyway. You can get to the backs of the valves to clean them with the intake manifold off.

To be clear here, the back of the valve is the part that faces the intake or the exhaust. The front of the valve faces into the cylinder. The front side stays about as clean as the rest of the cylinder, which is pretty clean.

One example of how:

 

[SixFootSix]

Hello,

I have a 2014 Genesis 5.0 R-Spec with about 84,000 miles. I heard good things about running a GDI cleaner through it so I bought a can of CRC Intake Valve Cleaner and make sure the engine was nice and warm. Removed the vacuum line as shown in the photo and ran a hose to the inside of the car so I can spray and keep RPMs around 2,000.

There was a little bit of smoke out of the exhaust while spraying. Once the can was exhausted, I turned the car off and let it sit for an hour. When I turned it on, there was a little bit of smoke, but not an "embarrassing" amount as other have described.

Question is, is this the right vacuum line to tap into? Was there not a lot of smoke because I always use Chevron (top tier) gas?

Just want to make sure I did it all correctly.

EDIT: The only difference I've noticed is the idle seems a bit smoother and a bit lower RPM than before, but maybe it's placebo.

View attachment 41817

Yes, I unplugged the same tube at the plastic intake manifold. My results were the same as you described with my 5.0 at 100k miles.

I noticed that some of the cleaner can seep past the rings and dilute your oil. It is therefore strongly recommended that you perform an oil and filter change after completing the cleaning.

 

[toxicavenger70]

There is no reason to remove the valves to clean them. Why would you? You'd have to clean them to be able to remove them anyway. You can get to the backs of the valves to clean them with the intake manifold off.

To be clear here, the back of the valve is the part that faces the intake or the exhaust. The front of the valve faces into the cylinder. The front side stays about as clean as the rest of the cylinder, which is pretty clean.

Thanks for the info. I did not know you can see the back of the valves on this style of engine by removing the intake manifold. Sounds like a cumbersome/expensive job. Unless there was an actual issue there is now way I would do this.

The video posted is really good. I wish he would have done a dyno run before and after the work was done.

Thanks.

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[Gunkk]

Was there not a lot of smoke because I always use Chevron (top tier) gas?

Smoke is not created so much by any removed deposits as by the diesel fuel that is used as the bulk liquid carrier. The polyether amine (PEA aka Techron) is the actual chemical solvent that partly dissolves the (softer, gel-type) deposits.

Hard deposits will go nowhere unless a walnut-shell blast cleaning is performed. They're commonly done (and necessary) on early-teens VW, BMWs, and a few other makes (Hyundai included). GDI Genesis sedans seem to be better than average, but can still benefit if they are not running or performing properly.



Full SDS for the curious: http://docs.crcindustries.com/msds/1003763E.pdf


Using top-tier gas is probably why your car isn't in worse shape. Yes, it matters.