Hi all, my Charger SRT8 has a dual 4-cylinder LPG system (Vitali). Video attached, engine idles around 630 rpm and then holds ~2000 rpm.
Symptoms:
-Runs rough/uneven, CEL came on
-Lurches/jerks forward when braking to stop
-Lost power at higher speed, doesn't pull like before
Shop result:
-No stored error codes
-Live data showed misfires on cylinder 8 only
-ignition coils still looking good
-Still runs rough
Anything I'm missing? Has anyone seen a single-cylinder misfire without a code on this engine, or maybe a lifter/valve issue?