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Bad smell from exhaust
guys when I drive my V8 enthusiastically I get a rotten egg smell wafting through the air when I stop and it is detectable if the wind blows the gasses towards the car. the car has the factory standard cat's is this smell normal? My other cars don't give of a bad egg smell |
Originally Posted by captain Greg
(Post 4771226)
guys when I drive my V8 enthusiastically I get a rotten egg smell wafting through the air when I stop and it is detectable if the wind blows the gasses towards the car. the car has the factory standard cat's is this smell normal? My other cars don't give of a bad egg smell |
Originally Posted by embdenb
(Post 4771238)
Typical catalytic exhaust smell usually due to improper air fuel mixture. Has the car been modified in any way? |
Try running some Techron on your next fill up. How old with is the air filter?
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Hydrogen Sulfide.
-Your cats are on their way out -The gas you're using has a high sulfur content -You're engine is running lean or hot |
Originally Posted by blue2000s
(Post 4771283)
Hydrogen Sulfide.
-Your cats are on their way out -The gas you're using has a high sulfur content -You're engine is running lean or hot can I pull the cats and just remove the honey comb? |
Originally Posted by captain Greg
(Post 4771315)
air filters are new, gas is standard 95 petrol no lead ? can I pull the cats and just remove the honey comb? |
Originally Posted by blue2000s
(Post 4771464)
I could be the cats. But they're expensive and are just one possible sources of the problem so I can't tell you to gut them. That's up to you. If it were me, I'd do the non-destructive things first like change gas stations, clean injectors.
i can even make up a pipe and remove them completely but I'm concerned with codes and software issues, your advise here will be a great help. will I see a noticeable difffrence in engine performance with out the cats? And will it be lighter on gas? |
Originally Posted by captain Greg
(Post 4771466)
I would love to gut them! Can I cut them open and remove all the restrictive material? What will happen with the scensors will it need a resistor or something to stop a code and possibly the motor going into slow mode? i can even make up a pipe and remove them completely but I'm concerned with codes and software issues, your advise here will be a great help. will I see a noticeable difffrence in engine performance with out the cats? And will it be lighter on gas? |
Options
Consider cat deletes and a tune and you shouldn’t have to worry about throwing codes. |
Originally Posted by embdenb
(Post 4771482)
You can gut the cats. That said the car’s exhaust will be louder and the ecu will probably throw an emission code. I believe at least one oxygen sensor is downstream from the cats. |
Originally Posted by DonRW2007
(Post 4771547)
Consider cat deletes and a tune and you shouldn’t have to worry about throwing codes. in short we have no dealer support and certainly they do not entertain letting a client work or tinker on his car. if I want to do a tune I will need to do it and I'm not sure what's involved? Can you add any details here ? |
Originally Posted by brightoncorgi
(Post 4771263)
Try running some Techron on your next fill up. How old with is the air filter?
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Cut open the cat pipes remove the inside ****!
I installed the sensors again. Get a cat delete file or just do what I do Every 4 months when the code comes up I delete the code with a OBD2 Reader. Done. The car still look original underneath. |
From which exhaust? Yours or the car's?
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