[jeff1998]

98 z28 camaro spark plugs installed for nitrous after plug install car has miss and small back fire ran code it says secondary air injection malfunction what caused this during spark plug install? Car ran perfect yesterday before plug install

 

[SOA-Nova]

Did you knock a hose off or break a wire connection ?. I would double check your work. It might be something simple.

Jim

 

[jeff1998]

Double checked myself can'tfind aanything wrong but new gasket on secondary air injection tube idles perfect test drive same miss and backfire I'm puzzled