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-   -   How can i check if i have plugged/blocked cats? (

rated ///M 25th May 2011 05:47 AM

Back pressure test, go to an exhaust shop.

AMP 25th May 2011 06:12 AM


Originally Posted by rated ///M (Post 2080841)
Back pressure test, go to an exhaust shop.

We have a winner!!


Best way to check is to remove a pre-cat O2 sensor and install a backpressure gauge. The gauge isn't all that expensive, but likely a single-use item in most toolboxes. Any competent exhaust shop or indy should be able to test for you.

pyro225 25th May 2011 09:18 AM

Thanks :-)

pjfox23 25th May 2011 09:23 PM

If you are heading down the path of replacing the cats, I would also get an exhaust gas analysis after replacement. Obviously, there is a reason why they are failing...

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