I have a 1983 rx7 Ive been trying to figure out what is the problem with it. It sounds like a vacuum leak so I had the carburetor rebuilt and it still didnt fix my problem. Si I had it sitting for a while and it whas getting cold, I started it up and I could no longer hear the vacuum leak until it warmed up. So ive been lead to believe its my vacuum hoses, but I read a post recently that somone mentioned a clogged cat could sound like a vacuum leak, even if the leak seems to be the hoses and I get them replaced and that fixes the problem should I still clean out the cats?

 

If you don't need the cats for a visual or emissions inspection you should invest in a nice
exhaust like a RB SP system.

 

Well I dont have alot of money right now. so cant I just shove some pipe on their for the time being? I dont have a welder though

 

Did you hit the hoses with carb cleaner, while the car is running and try to track down the "leak"?

 

Yea I think the biggest leak is behind the carburetor somewhere thats why I origionally thought it was the carb becuase thats were all the noise whas from and its really loud!

 

anti-afterburn hose

 

Thank you ill check that out when the snow melts if I can get it started also the coolant leaks so it smokes if you park it for too long

 

it was just the shutter valve so i pluged the hole in the intake and unpluged the shutter valve now it runs nice!