522655-1 - short term closed loop correction bank 1 greater than nor 40% - running lean
last time i had this a pm got rid of it. the air filter was plugged and the plugs were terrible.

book says
Contaminated/clogged trim fuel injectors filter and/or LPG regulators filter
Contaminated/clogged trim fuel injector
Faulty trim fuel injector or wiring
Contaminated LPG fuel
Low primary LPG fuel pressure for trim fuel injector
Low secondary LPG fuel pressure for carb
Clogged fuel hoses
Contaminated/dirty carburetor
Faulty fuel shutoff solenoids
Engine overheating
Exhaust leaks prior to or near oxygen sensor
Manifold vacuum leaks