Heavy misfire with no codes - Chevy and GMC Duramax Diesel Forum
06-07 LBZ & LLY Duramax Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission, Etc.

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post #1 of 1 (permalink) Old 01-23-2020, 02:58 PM Thread Starter
Lbz1st's Avatar
Join Date: Dec 2019
Posts: 2
Heavy misfire with no codes

I have swapped a lbz into a 04 sierra ext cab 4x2 that was an ex 6.0 gasser and got it going without too many issues. After being parked for a couple days, upon startup It shook, white smoked and misfired to the point I'm afraid to drive it. I have an OBD2 bluetooth adapter with TORQUE app and even though the CEL light is on it wont display ant codes. Possible causes/ solutions?
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