I need to make sure that my cat is bad... i own a 1994 honda civic lx sedan, i get horrible horrible gas milage about 17-19 mpg!!! when i accelarate between 1st and 2nd gear i hear a loud rattling noise i dont know what it is!! also at times when im at a light or stop sign, i accelerate and the car hesitates to go! it jumps as if it will turn off! its really embarassing. . . also my car is burning too much oil everytime i turn on y car i think its oil or gas spits out from the exhaust everytime ill post a pic tomorrow when its bright outside i really need help i need to fix this problem

 

Jack up the front of your car and hit the converter with your hand, if you hear rattling in it then its bad, or just unbolt it from the header and look inside with a flashlight

 

so if i heaar a rattle its bad? cuz everytime i drive a hear a loud rattle from the bottom but idk what it is

 

If you can hear it rattle then the cat is bad and fell apart on the inside

 

damn alrite ill be sure to do that also my car throws out alot of smoke like white smoke is it caused by the cat tooo

 

Noo, white smoke is usually a bad headgasket

Check your oil, if its like coffee colored then its a bad headgasket

 

alright ill check it tomorrow first thing

 

Mines sounded like popcorn when it was on its way out. Do asvthe above post said. Rattling under the car coyld also be a rusted exhaust. Start with the converter.

 

thanks bro good advice will check