Comments on: 8 Best Catalytic Converter Cleaners (for Clogged Cats)

By: Chance

Chance — Wed, 30 Nov 2022 22:13:18 +0000

In reply to Debra Cormier. Did you ever figure this out? What happened?

By: Lorri

Lorri — Tue, 15 Nov 2022 02:58:32 +0000

Not advisable. There is a ratio of gas vs cleaner for the amount of gas in your tank.
Should wait until you’re down to 1/4 tank or approximately 4 gallons of gas in your tank.
Most caty cleaners say to pour into tank containing 1/4 tank of gas, then drive approximately 15 miles & then completely fill your tank with gas. Nothing else should be added in that tank of gas.
Just read the labels on product’s container for exact directions for the caty cleaner you choose to use as it may vary from one brand or product to another.

By: Joseph

Joseph — Sat, 29 Oct 2022 21:05:22 +0000

In reply to Toni. Just used this product today. Worked as promised, superior results!

By: Sean

Sean — Mon, 10 Oct 2022 12:54:13 +0000

In reply to Debra Cormier. Sure you could swap the catalytic converter, but I'm not sure it would fix the issue. You may want to see if the owner's manual calls for a valve adjustment in that car. Before you do that, try to figure out if the noise is coming from the top end or the bottom end of the engine.

By: Debra Cormier

Debra Cormier — Fri, 07 Oct 2022 09:34:14 +0000

I have 2011 Chevy equinox that I put in a can of sea foam due to hearing a rattling noise but it did not clear it but made it louder can I put in a catalytic cleaner in on top of the sea foam. It’s not showing codes but when I start the engine it’s very loud.

By: David

David — Sat, 12 Feb 2022 13:44:03 +0000

In reply to Car owner. Don't recommend. Stick with Lucas and repeat per instructions and you should be fine.

By: Sean

Sean — Thu, 30 Sep 2021 15:38:26 +0000

In reply to William Patterson. I don't know, I don't live in California so I have never dealt with their smog test. Have you tried cleaning the throttle body, MAF if it has one, and IAC valve? If it otherwise passes smog, my thoughts are that some of the idle control components may be dirty.

By: William Patterson

William Patterson — Wed, 29 Sep 2021 04:08:16 +0000

1993 jeep GC with 6 cyc. Won’t pass california smog due to high HC at idle. 36 pts above the limit. It does pass high speed HC limits no problem. Has new ignition parts and ran SeaFoam through it via the throttle body. Has 200k miles but runs good. Could it be a bad or dirty Cat? It is the original unit. Do you think using this cleaner will be worth it? How do you tell if it is working? Measure the input and output temp.?

By: Jeremy mcGrath

Jeremy mcGrath — Sat, 01 May 2021 00:07:06 +0000

I have a friend that told me he took the cat off his Honda civic and washed it with dish soap and boil.
Pass the California emissions test.

By: C. Baeza

C. Baeza — Thu, 22 Oct 2020 16:56:48 +0000

For my 2007 mazda 3, Can I soak my catalytic converter in a warm water with sea foam auto soap(used for car washing, not the Spray can sea foam) to clean the catalytic converter? Emissions code: PO421