Chevy/GMC Heavy Duty Discuss your 2500 and 3500 Chevy and GMC pickups as well as the DURAMAX diesel and it's predecessors

1999 GMC 3500HD 454 auto 160k Running Rich

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Old Sep 28, 2021 | 08:15 PM
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Nat
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Default 1999 GMC 3500HD 454 auto 160k Running Rich

I need to smog it and worried that it won't pass When its cold it starts right up. When its warm it starts like a carbureted engine with the choke on. VERY rich.
Other then that it runs fine.

Thanks Nat
 
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