Clogged cat?

[85straight]

Looking for opinions on my issue I’m having with my 22re.

About 5 years ago I put a new cat in the truck. Slowly over the last year or so it’s been showing all the typical signs of being clogged. It’s now to the point of barely driveble. I’ve also developed a good amount of oil through the rings, would the bad rings cause the cat to clog up that fast?

I’m also suspect of clogged injectors as the symptoms are pretty similar

 

[CCDave]

I'm no expert, but if you suspect a clogged cat, you could check the cat efficiency. Search YouTube for catalytic converter tests and you should find some good videos on this topic. A temp test might be the simplest test if you have access to an infrared laser temp gun.

Oil in the exhaust can clog the cat, and a temp test should show if it's clogged. If you have a cat that can be easily disconnected from the down pipe, disconnect it temporarily to eliminate the cat from the exhaust system to see if there is a difference in performance.

Could also inspect the PCV valve and condition of the plugs, but if you know you have oil getting past the rings then that's an issue to tackle first.

Good luck with it.

 

[Melrose 4r]

If you can put a vacuum gauge on it, when you first start it the gauge should read high, 15" or so, then drop steadily as it runs. A car with a restricted cat will have very little power and get very hot as said. Removing it will instantly confirm that is the problem.

I used a cheap replacement cat on a Honda that I didn't think I would be driving long and it lasted 3 years. Compare with the original OEM unit lasting 14 years.

 

[fourwd1]

Yes it could clog the cat quickly.