Ok so I got a full exhaust system from the headers to the muffler and its a bolt on one. this on came with a 2 adapter or extension and i had to use it because the cat/resonator wouldnt fit to the next part of the pipe. So I get finished put it on and at the 2 extension area it wasnt really closed all the way but i tightened the bolt as much as i can and thats the farthest it would go. The next day I let my car idle before leaving school because of all the traffic of a bunch of people leaving at once. 5-15 minutes later I get in and it smelled nothing but exhaust so I pulled down the window and tried airing it out. I think I might have a leak but I‘m going to try to fix the extension part and straighten it out. If this doesnt do anything should I just go and weld the parts together? plus there‘s a kinda rasping noise when I press the accelerator past half way it doesnt do it when im on the gas lightly. Please help or give me suggestions.
Yeah, you for sure have an exhaust leak down by the cat probably. Let it idle and look under the car, you'll be able to see the exhaust coming out if it's either cold out or in the morning.
To check for an exhaust leak, turn the car off for a while allow the exhaust to cool. Duct tape a shopvac to the end of the pipe (pressure side of shopvac). turn the vac on and feel for air at the joints. Then tighten what leaks. Good luck!
if the exhaust is coming inside the car then it must be a leak on the exhaust manifolds maybe a leak from the exhaust donut. or where it bolts on to the heads and that would explain why you get a rasping noise as well . have it running and open the hood and listen reve it up a bit it should not really stink with new system some times it will burn off paint and stuff but it would get less. good luck
