catalytic coverter affecting gas mileage?
01-31-2007, 09:22 AM
#1
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catalytic coverter affecting gas mileage?
Can anyone clear this up for me? I heard someone say on this site that if your car has has been flooded or excess gas has been left in the cat from flooding that it can resrict flow and cause poor gas mileage, heard that the only way to tell is if you can smell sulfer.
01-31-2007, 10:09 AM
#4
The reason is that when you flood it and you *De-flood* it by using Mazda's way. You will *push* all the unburned fuel into the Cat. So when you *Start* your car up, your Cat will start burning because it has fuel on it. It will burn for maybe a few secounds because theres not much *Fuel* there but that few seconds will be more than enough to make something *lose* in there. when its lose, it will block the airflow until everything is *burn out*
01-31-2007, 10:48 AM
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my car was flodded the day i picked it up and i remember that it smelled horrible but i've never had problems with my cat i have other problems right now but i still love my car oh ya dmp did you end up keeping your car? i just read your iniital post and a few responses?
01-31-2007, 10:52 AM
#7
RX8 and a Truk....
Originally Posted by KRNrx8Driver
my car was flodded the day i picked it up and i remember that it smelled horrible but i've never had problems with my cat i have other problems right now but i still love my car oh ya dmp did you end up keeping your car? i just read your iniital post and a few responses?
Then the cliff's notes:
I took it to another dealership; they took care of me. It's there now AGAIN for what I suspect is another cat-failure.
01-31-2007, 03:50 PM
#8
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Originally Posted by nycgps
The reason is that when you flood it and you *De-flood* it by using Mazda's way. You will *push* all the unburned fuel into the Cat. So when you *Start* your car up, your Cat will start burning because it has fuel on it. It will burn for maybe a few secounds because theres not much *Fuel* there but that few seconds will be more than enough to make something *lose* in there. when its lose, it will block the airflow until everything is *burn out*
01-31-2007, 06:43 PM
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I changed my Cat and my muffler, and after a while the engine light went on and the dealer is telling me i have to change my cat and put the stock one, and i cant rev my car or go fast with it becuz it wont push. what do you guys think?
01-31-2007, 08:54 PM
#11
I dont understand your
"the dealer is telling me i have to change my cat and put the stock one, and i cant rev my car or go fast with it becuz it wont push."
Does that mean you already back to stock Cat and exhaust ?
If yes then, its not CAT's problem or whatever, someelse is wrong.
"the dealer is telling me i have to change my cat and put the stock one, and i cant rev my car or go fast with it becuz it wont push."
Does that mean you already back to stock Cat and exhaust ?
If yes then, its not CAT's problem or whatever, someelse is wrong.
01-31-2007, 09:17 PM
#12
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Originally Posted by dmp
More than poor mileage (I'm well-versed in RX8 cat problems) - you'd notice the car not having any *****...it'd start progressively losing power.
i'm about to go tell the dealer to replace the spark plugs and the cat..
02-01-2007, 07:40 AM
#14
RX8 and a Truk....
Originally Posted by Ajax
does it start slow or is it night and day? my gas mileage has recently gone to crap and my car really has been feeling kind of anemic, plus i've thrown a few misfire codes in the past 2 months...
i'm about to go tell the dealer to replace the spark plugs and the cat..
i'm about to go tell the dealer to replace the spark plugs and the cat..
Last time it was a gradual loss of power.
02-02-2007, 05:53 PM
#15
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i have an appointment to get it checked out tuesday... i had been smelling a foul odor, and thought it was the people in front of me, but i'm willing to bet it's the cat.
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