Need advice and ideas on exhaust fumes!

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Clone TIE Pilot

Comic Book Super Hero
Aug 14, 2011
3,900
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Galaxy far far away
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.
 
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78Malibu496bbc

Not-quite-so-new-guy
Jan 15, 2023
20
15
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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

Not-quite-so-new-guy
Jan 15, 2023
20
15
3
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

Not-quite-so-new-guy
Jan 15, 2023
20
15
3
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
 
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