CRC intake valve carbon deposit cleaner- in a spray can - TerrainForum.net: GMC Terrain Forum
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post #1 of 33 (permalink) Old 11-25-2015, 03:47 PM Thread Starter
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CRC intake valve carbon deposit cleaner- in a spray can


Who is going to try?
Probably good for someone that is nearing the Spark Plug change...
Use product, change plugs (and remove intake ) and inspect to see how clean the valves are....... and show pics....


http://crcindustries.com/auto/intake-valve-cleaner.php


https://www.youtube.com/watch?v=siRwcnj8-OE

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post #2 of 33 (permalink) Old 11-25-2015, 04:10 PM
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Re: CRC intake valve carbon deposit cleaner- in a spray can

Good point on using cleaner first then changing the plugs.
Not good to run all that gunk over the plugs.
I only put about 5K on a year so won't be ready for a top end service for a while.

On a side note I am running Shell Premium now to see if there is a difference.
Haven't noticed a change in running yet but the exhaust tips are MUCH cleaner.
I'll give it a couple of months and let you know if there is a change in running or mileage.

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post #3 of 33 (permalink) Old 11-25-2015, 04:36 PM
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Re:

Heh heh... The process looks very, very similar to SeaFoam, doesn't it? Wonder how unique the chemical is in this can?
And I wonder why they didn't recommend using a vacuum source instead? Bypassing the MAF will certainly trigger the CEL.

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post #4 of 33 (permalink) Old 11-25-2015, 05:07 PM
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Re:

Quote:
Originally Posted by Chas
And I wonder why they didn't recommend using a vacuum source instead? Bypassing the MAF will certainly trigger the CEL.

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Maybe they wanted to give the throttle body a shot of cleaner, rather than run it directly into the intake manifold.

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post #5 of 33 (permalink) Old 11-25-2015, 05:20 PM
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Re: CRC intake valve carbon deposit cleaner- in a spray can

Quote:
Originally Posted by rednox301

Haven't noticed a change in running yet but the exhaust tips are MUCH cleaner.
I'll give it a couple of months and let you know if there is a change in running or mileage.
Apologies for the topic "take off" here. . ..

+! I have been using Premium 91 octane for the past 8 weeks or so and I noticed MUCH Less soot on the twin V6 exhaust tips also. I was wiping them off every week and since using Premium I hardly see anything but a slight film after a week. I always wiped them down once a week and there is hardly any black, where before I had to wipe three times to get all the soot off.

I am wondering why Premium would result is so much less soot. ... . and maybe carbon in the combustion chambers also?

I should mention, this is with using 3 different brands of Premium also. . . . KwikTrip, BP, and Cenex. Cenex is also a no ethanol Prmium.

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post #6 of 33 (permalink) Old 11-25-2015, 08:12 PM
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Re: CRC intake valve carbon deposit cleaner- in a spray can

Quote:
Originally Posted by rbarrios
Who is going to try?
Probably good for someone that is nearing the Spark Plug change...
Use product, change plugs (and remove intake ) and inspect to see how clean the valves are....... and show pics....

I bought a can earlier in the year with a pretty good rebate, but haven't used it yet. In fact, I completely forgot all about it, and where I stored it. Seems like there was a $5-7 rebate.


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post #7 of 33 (permalink) Old 11-26-2015, 02:00 AM
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Re: CRC intake valve carbon deposit cleaner- in a spray can

Nothing can come close to the GM Top End Engine Cleaner. We tried this once to see if it was any good, and it did not seem to do much.
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post #8 of 33 (permalink) Old 11-26-2015, 02:06 AM
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Re: CRC intake valve carbon deposit cleaner- in a spray can

Quote:
Originally Posted by JayTee2014
Apologies for the topic "take off" here. . ..

+! I have been using Premium 91 octane for the past 8 weeks or so and I noticed MUCH Less soot on the twin V6 exhaust tips also. I was wiping them off every week and since using Premium I hardly see anything but a slight film after a week. I always wiped them down once a week and there is hardly any black, where before I had to wipe three times to get all the soot off.

I am wondering why Premium would result is so much less soot. ... . and maybe carbon in the combustion chambers also?

I should mention, this is with using 3 different brands of Premium also. . . . KwikTrip, BP, and Cenex. Cenex is also a no ethanol Prmium.
I also notice very clean tips from using it. I believe it is caused from the high octane fuel burning more completely because this is a very high compression engine and it is running the timing much more advanced. When these engines are run on 87 octane, the computer is very prone to retarding the timing because there is a fair amount of knock. When the timing is being retarded the fuel may not burn completely. Just hook up a scan tool and watch the knock retard pid's using 87 and 91+ octane. There is a ton of knock being detected on 87. DI engines are sooty to begin with.

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post #9 of 33 (permalink) Old 11-26-2015, 10:25 AM
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Re: CRC intake valve carbon deposit cleaner- in a spray can

Quote:
Originally Posted by HFV6
Nothing can come close to the GM Top End Engine Cleaner. We tried this once to see if it was any good, and it did not seem to do much.
That's 1052626 right? My 2011 4cyl is over 40k now with questionable past maintenance so I was thinking about cleaning her out at the next oil change.

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post #10 of 33 (permalink) Old 11-26-2015, 12:13 PM
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Re: CRC intake valve carbon deposit cleaner- in a spray can

Quote:
Originally Posted by HFV6
Nothing can come close to the GM Top End Engine Cleaner. We tried this once to see if it was any good, and it did not seem to do much.
The GM product is probably better due to how often they recommend to use it.
The CRC product can/should be used every 10K miles.
Just my .02

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