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Old 11-12-2014, 02:58 PM   #1
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CRC intake valve cleaner

I was glad to see an over the counter intake valve cleaner. I tried this on my 12' Focus. The directions say to keep engine at 2500 rpm and spray built in straw cleaner into the throttle body past the mass airflow. Specifies that mass airflow could be damaged. with intake boot off car would not maintain any rpm steadily let alone get up to 2k . It would sometimes flash above or bog down. So called CRC . Tech said to try with boot in place. This would put the straw right at the mass airflow wire. So I did short bursts , Then started, For fear of hydro lock.Seems to have worked . Car runs better and blew out an huge smoke cloud when taken out on the road after the hour soak waiting period. Wasn't having any driving issues before. But figured there might have been a gradual performance decrease not perceptible. Anyone else use this product?


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Old 11-12-2014, 03:33 PM   #2
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So, you tried to fix what's not broken?
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Old 11-12-2014, 05:07 PM   #3
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Maintenance. You could leave something go till it breaks or causes issues.
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Old 11-12-2014, 05:14 PM   #4
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Originally Posted by cobrajet429 View Post
Maintenance. You could leave something go till it breaks or causes issues.
Granted. Show me where in the maintenance guide any such procedure is approved or required as part of routine maintenance, and I won't argue with you again, I promise.
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Old 11-12-2014, 08:57 PM   #5
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I used it. My buddy who owns a shop was gonna do a BG44K treatment but I could not get over there to do it so I went with the CRC. Could not find it in my area so I messaged CRC on Facebook. They sent me a free sample!

I sprayed it into the opening of the small vacuum connection on the top of the intake tube just before the throttle body. Ended up with a smoother idle and a little better power. I wanted to use a boroscope to see before and after pics but was not able too. First time doing something like that in 55K. I like CRC products so I thought I would give it a try. Not a fan of seafoam.


http://crcindustries.com/auto/intake-valve-cleaner.php
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Old 11-13-2014, 01:57 AM   #6
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Granted. Show me where in the maintenance guide any such procedure is approved or required as part of routine maintenance, and I won't argue with you again, I promise.
Without using a boroscope there's no telling if like Audi's and BMW's with direct injection whether there is carbon build up. Its not in any of their scheduled maintenance either.
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Old 11-13-2014, 02:57 AM   #7
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Since our cars do not have egr the only buildup i could see in the intake would be caused from oil vapor residue. This sounds like it would definately take care of that problem. And because of the direct injection you wouldnt have to worry about the particles breaking off clogging up the injectors. glad too hear it worked out for you. I know i always panic when trying new things such as this especially on newer cars. Has anyone opened up the intake manifold and witnessed how these cars look in the 50xxx+ range with no cleaning.
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Old 11-13-2014, 08:30 AM   #8
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Originally Posted by cobrajet429 View Post
Without using a boroscope there's no telling if like Audi's and BMW's with direct injection whether there is carbon build up. Its not in any of their scheduled maintenance either.
Hey, it's your car, pour candle wax in there, for all I care. I'm just not convinced that some cockamamie procedure involving strawsticking and spraying "short bursts" will solve much of anything...

Then again, I'm reminded of Ol' P. T. Barnum...
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Old 11-13-2014, 08:42 AM   #9
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Originally Posted by flyboyike View Post
Hey, it's your car, pour candle wax in there, for all I care. I'm just not convinced that some cockamamie procedure involving strawsticking and spraying "short bursts" will solve much of anything...

Then again, I'm reminded of Ol' P. T. Barnum...
If you don't like it don't do it. That simple. No reason to keep posting asininities. To each there own.
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Old 11-13-2014, 08:46 AM   #10
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The BMW solution for intake valve deposits is to have the engine inhale crushed walnut shells, physically blasting deposits off the valve surface. If this is what's needed, I really doubt exposing the valves to a minute of two of CRC spray is going to do much of anything. And if chemical treatments were really effective I doubt BMW would advocate the much-more-aggresive walnut shell route.

I have yet to see any report of intake valve deposits on a normally-aspirated Focus. For example, PratoN just turned 100k in his with no such complaint.
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