need help! 23 supercharged 5.0 roush

[Letty]

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[jmh86325]

what?

 

[diambo4life]

Probably cats...but that could throw a misfire code. Whitish smoke could be fuel...could be antifreeze. Have you checked the levels yet? Get under the truck and look it over front to back for anything abnormal. Any oily residue on the exhaust tip? Engine bay? Did you happen to get a whiff of the smoke you saw? Need more info and slow down and be clear when you type stuff out.

 

[Icecoldak]

Lets see here! new 23 with Roush SC-I would take it back to the dealer and let them fix whatever you tried to say!!! I would hope under warranty

 

[2whiny]

sorry, I spoke that and my pc put it out there like I'm a retard

Sounds like a converter is failing. The keywords are sulphur smell and quieter. Scope the substrate or be on the lookout for P0430 or P0420 in the next few days and keep your foot out of it for the next few drive cycles to see if a CEL is thrown.

 

[fecalflinger]

Check out this thread for more info on cat issues. I was getting the sulfur smell and muffled sound but also a P0300 and P0430 code under heavy acceleration.

My 2023 RCSB with Roush supercharger is back at the dealership now and they are telling me I will need a new long block.

https://www.f150gen14.com/forum/threads/highest-supercharged-mileage.21840/

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