Need advice and ideas on exhaust fumes!

[Clone TIE Pilot]

Is the engine running correctly? Rich and especially lean mixtures cause pungent exhaust. There is also a weatherseal around the cowl to keep the cowl vents from sucking in underhood flumes. It could be missing or damaged.

 

[78Malibu496bbc]

Header to Head sealing up good?

I'm assuming it's a 496 in the car given the screen name..

update. started it up the other day to listen and look. heard a significant exhaust leak coming from the passenger side right under the firewall. after inspection, the last shop that i had put the exhaust together, must have pieced it together. its leaking bad in the joints of the pipe

 

[78Malibu496bbc]

Header to Head sealing up good?

I'm assuming it's a 496 in the car given the screen name..

and yes, its a 496

 

[78Malibu496bbc]

Is the engine running correctly? Rich and especially lean mixtures cause pungent exhaust. There is also a weatherseal around the cowl to keep the cowl vents from sucking in underhood flumes. It could be missing or damaged.

engine runs great. it has a brawler carb that is adjusted good. i do have a fiberglass cowl hood, that is wide open no seal, or screen on the opening. never thought that would be the issue.

 

[78Malibu496bbc]

The problem with running exhaust out the back is that when you are moving you create a draft that pulls exhaust back to the car. Check deck lid gaskets, rear light sealing, rust etc.

will do thanks

 

[78Malibu496bbc]

What headers?

2241 or 2455?

Windows up?

Windows down?

Heat or a/c?

How does the exhaust exit the body?

im not sure the model of hooker headers thats on it. i will check though when the ice and snow melts. its tolerable with the windows down, no heat or ac, the exhaust is dumped right before the rear end