ZR-1 Net Registry Forums - Engine sputter/stutter in performance mode?

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kablamo

05-04-2014 09:36 AM

Engine sputter/stutter in performance mode?

My 91 ZR-1 is running funny in performance mode only. It sputters or stutters only if you apply aggressive throttle. Fixed vac leak, plugs, wires, 1 coil. Got a little better but still doing it. Injectors tested at 6ohms so that's next. Any other ideas while plenum is off? Tank has 7month old ethanol gas I'm trying to burn through to replace with non ethanol too. Thanks!!!

Karl	05-04-2014 09:56 AM

Re: Engine sputter/stutter in performance mode?

7 month old E85?

RICHARD TILL

05-04-2014 01:45 PM

Re: Engine sputter/stutter in performance mode?

Injectors and possibly 3 more coils. Shouldn`t they check 12-13 ohms? Pulled my plenum yesterday for new MSD coils.

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