Quote:
Originally Posted by Bkmorey
Just took my 2016 camaro 2ss to shop with 7k miles for misfire and on first start up it has a little bit of a extended crank. They said it's 100% a misfire even with CEL off and are trying a fuel injector they think is leaking
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Honestly, that is pretty odd...
I have never heard of a misfire in these cars not tossing a code, especially if an injector(s) is bad.
Also, LT1's at cold start will have a "rough" idle somewhat. It is the a/f ratio changing to heat the cats up faster. My previous Coyote Mustang did the same thing.
As for the extended crank, that also is normal. DI takes longer to build enough fuel pressure.