glenrx7

iTrader: (1)

I have a stock cat hks down pipe and stock exhuast, is there any way to tell if cat is clogged, 82k on the cat

RX7Wishing

DO A SEARCH! jesus this topic has come up 302940-3940-2940-3294-02394-032940-2349- times.

do a search for clogged cat.

88GT

C'mon relax here.. Correct me if I'm wrong but didn't you just post about your clogged cat!!
What's the saying.. do as I say not as I do.

GlenRX7, why don't you pull the cat, get yourself a flashlight and look into the cat. If the bricks are broken then you need a new cat.

RX7Wishing

88GT, Your Corrected. =p


i didnt post that.. atleast i dont remember. i did post about a precat/boost issues.. but not about a cat itself. Anyway thats beside the point. i did a search and found numerous items about testing your cat.

glenrx7

iTrader: (1)

thats helpfull....thanks

RX7Wishing

what info you looking for? whats wrong with your car maybe? mods?

you would get responsive replys if you post "hey im having this problem." then add "could it be my cat?".. Anyway.. why do you ask? Did you just want to know in general how to see if a cat is clogged?

glenrx7

iTrader: (1)

p.s. thanks 88gt some of us have to work so we post then come back later to look I think thats why they call this a forum. Well thanks though others are not so understanding

RX7Wishing

yea... i dont have a job. actually.. i do... my job is to post as much as i can on this forum.

glenrx7

iTrader: (1)

for a guy that has a job you post like a mad man........look did what you suggested not a bit of help....so i try it your way again . (for anyone that can help)I have a a motor with 80k just went though all the rubber hose and vacuum lines and replaced new plugs, plug wires gaskets ext, I added a ypipe down pipe new koyo rad and a pre spool and manual boost controls running 10 8 10. Wel i have a problem with my idle , my vacuum and I am getting inconsistant boost. well i have the stock cat and cat back. The compression on my motor is low but even and in spec. I sprayed my internals with carb cleaner and could not find a leak...Help....

Sonny

If you take it to a muffler shop or have access to a pyrometer, you can measure the temps directly in front of and behind the cat. A clogged cat usually has a large temperature difference since it's not letting anything through.

Sonny

RX7Wishing

^^^^^^^ Good advise!


You said you had boost controllers on the turbos.. did it do it when you didnt have them on? and obviously you havent heard any leaks.. when you say they are inconsistant.. elaborate a lil for me. i had a simliar issue where power dropped off and boost dropped off when the ar got hot. was due to a vaccum hose heating up and becoming softer and collapsing.

RX7Wishing

Also, if your having vaccum issues then that is indicitive (sp?) of either

1.) Motor done

2.) Vaccum leak after the TB

does it rev fine? Whats your idle at? Does your car "hunt" for an idle point?.

glenrx7

iTrader: (1)

no vacuum issues that i can see it is the xs eng vacuum tubbing does not seem to kink, idle is about 1500 then 750 then 1200 over a long periond not a hunting, it idles ok when hot then it starts to get higher after just driving

PandazRx-7

iTrader: (18)

Hey, kinda stupid question but I was wondering how a clogged cat would effect emmisions testing...anyone know.

glenrx7

iTrader: (1)

rx7 wishing, would you like to help our friend "pandaz"

glenrx7

iTrader: (1)

this will infact hurt emission that one i know...not the brightest but yeah it will hurt your emissions

alberto_mg

-undo the bolts where it mounts to the downpipe
-get a flashlight and shine into the cat while peaking in there
- if you seen what looks like mesh, its probably not clogged yet.
- if it looks kinda like a drain clogged up with coffee grains, then its clogged/clogging. in extreme cases you'll have parts of catalyst material breaking off in the pipe.

turbojeff

iTrader: (30)

The kitty litter is always clean.

freak07

And then take a screw driver and remove every thing till it has nothing in it and you are golden.