502Stingray

iTrader: (1)

Hey Im coming across the same issue as some of you only when i do a cold start does it take a little extra crank to start, and sometimes followed by a lil rough idle. I replaced my front o2's the lean code went away, I rechecked my K&N Cai, no leaks, put lots of fuel injector cleaner in, no results, checked the plugs + wires, even replaced them both, no results, so then wat is your solution to the problem?

Thanks

Mike

LS1curious

Any codes for the CMP ?

502Stingray

iTrader: (1)

none, the only code im getting is the bank 1 +2 sensor 2 high voltage..as far as I know tho those are the rear O2s

helicoil

iTrader: (104)

Do a fuel injector balance test and check your fuel pressure for bleed down. You may have an injector seeping. That would explain the long crank and chugging when it first lights off.

Fuel pressure should hold within 5 psi for 1 minute after it stabilizes from the 2 second prime.