The proper way to use intake valve cleaner Using intake valve cleaner the wrong way can damage your catalytic converter You’ll find lots of youtube videos and articles showing you how to inject upper intake cleaner into a vacuum line. Following those videos can cost you a lot of money because injecting an intake valve cleaner into a vacuum line creates an unmetered air leak that can overheat your catalytic converter and destroy it. Why injecting intake valve cleaner into a vacuum line is wrong on modern engines Most late … Read More
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