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Jax ZR1 · 07-21-2019

Just pulled the plenum and replaced injectors and starter put it back together and is still idling ruff and check engine light comes on, checked codes and got a code 42 electronic spark timing. It’s a 1990 ZR1 with just under 10,000 miles on it. Any ideas would be great thanks.

07-21-2019	#1
Jax ZR1 Join Date: May 2019 Location: Vanderhoof British Columbia Canada Posts: 34	Code 42 EST Just pulled the plenum and replaced injectors and starter put it back together and is still idling ruff and check engine light comes on, checked codes and got a code 42 electronic spark timing. It’s a 1990 ZR1 with just under 10,000 miles on it. Any ideas would be great thanks.