catalytic converter
#1
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catalytic converter
I have a 99' 4runner V6 & I have an issue w/ my flange gasket between the cat & the exhaust pipe. When I bought the truck in spring 2009 the gasket was leaking so I replaced it & this year it's leaking again. A mechanic I know said that the cat converters in these 4runners are notorious for a piece of metal inside the converter breaking off & causes these kinds of exhaust leaks. My friend told me that when he's driving behind me he can smell the raw exhaust & he told me that I should replace my catalytic converter. I am wondering if anyone in here had this same problem & need your advice just in case if it's just a gasket issue or it's really the catalytic converter? I just don't wanna go out & spend big $$ & the issue re-occurs.
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No I'm not using OEM. When I went to my local parts store the first gasket that was listed for my truck didn't fit because it was like a small o-ring shaped gasket. So as I was looking @ the flange & it had an oval shaped style so I went back to the store & I requested for a chevy gasket & it fit right into the flange lol! Now I don't know if my truck has an aftermarket cat or if it came like that from factory.............
#4
take a picture. if its oem cat, i would go to toyota a get an oem gasket. i havent seen any of those fail and alot of times you can just reuse them even tho the repair manual says to replace them if you remove
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Hmmmm, I guess I'll take it to my local Toyota shop since I know most of the guys there & have them take a look @ it they'll have a better idea if it's aftermarket or OEM. No I don't have any engine lights coming on but I'll have them put it on a scanner to make sure.
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#10
Use Copper Coat or a thin coat of RED RTV on both sides of the gasket. I don't even use gaskets on the exhaust in my '88, just a thin bead of RED RTV and I let it cure for a few hours before driving - no leaks in 6 years of use
stuff is great for high heat gaskets and helps fill imperfections
stuff is great for high heat gaskets and helps fill imperfections
#11
Be careful with gasket compounds of any kind. Copper and silicone (RTV) both are known catalyst and O2 sensor poisons.
It sounds like you have a non-OEM exhaust flange, so I'm not sure the OEM gasket will work.
-Dan
It sounds like you have a non-OEM exhaust flange, so I'm not sure the OEM gasket will work.
-Dan
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