Nissan 370Z Forum - View Single Post - Technical difficulties, erratic and inconsistent behavior

Jordo! · 10-21-2014, 02:25 AM

Gasoline Stoichiometric air-to-fuel ratio = 14.7 : 1

Propane (LPG) Stoichiometric air-to-fuel ratio = 15.67 : 1

ECU is tuned for Gasoline, so you are running verrrrry rich, and the ECU cannot compensate.

Assuming the LPG isn't killing the sensors (and the cats, or the injectors, or the pump), you need the car to be retuned for the fuel you are using.

Also, your spark plugs are probably pretty badly fouled... good luck.

10-21-2014, 02:25 AM	#9 (permalink)
Jordo! A True Z Fanatic Join Date: May 2010 Location: nirvana Posts: 6,394 Drives: 2023 NATM Rep Power: 418	Gasoline Stoichiometric air-to-fuel ratio = 14.7 : 1 Propane (LPG) Stoichiometric air-to-fuel ratio = 15.67 : 1 ECU is tuned for Gasoline, so you are running verrrrry rich, and the ECU cannot compensate. Assuming the LPG isn't killing the sensors (and the cats, or the injectors, or the pump), you need the car to be retuned for the fuel you are using. Also, your spark plugs are probably pretty badly fouled... good luck. __________________ Enjoy it. Destroy it.