Marv02
Well-known member
How can you tell if your pre cats are bad.
After installing the new motor The pre cats are both smoking.
The Right side cat smoked before the motor swap but now both of them are smoking.
White smoke comming off the outside body of the cats under the heat sheilds.
I tryed to run the motor to burn off what every making them smoke no luck so far.
The smoking starts after the cats get hot it seams like when it get up top temp to light off for smog thats when they start smoking.
Also notice the motor runs a little ruff when they come up to temp.
The water temp is normal and the oil temp is normal.
I tryed to use some engine cleaner on the cats then wash them off but still smoking.
I don't smell like oil or coolent just white smoke.
Any Ideas or are the cats gone bad on me.
After installing the new motor The pre cats are both smoking.
The Right side cat smoked before the motor swap but now both of them are smoking.
White smoke comming off the outside body of the cats under the heat sheilds.
I tryed to run the motor to burn off what every making them smoke no luck so far.
The smoking starts after the cats get hot it seams like when it get up top temp to light off for smog thats when they start smoking.
Also notice the motor runs a little ruff when they come up to temp.
The water temp is normal and the oil temp is normal.
I tryed to use some engine cleaner on the cats then wash them off but still smoking.
I don't smell like oil or coolent just white smoke.
Any Ideas or are the cats gone bad on me.