Theguy1999
New Member
Heys Guys i am new here.
I have Holden Caprice/Statesman 2005 with Stock LS1 GenIII. I am getting 8 mpg average. People said they are getting around 500 km on full tank but i am getting around 350 km. I spent a lot of money and also took car to many mechanics but they found nothing. Plugs are new but coils and wires are not. But how ignition can cause car to run too much rich ? Air filter is also new. Also there is very minor misfire that only mechanic can feel it not normal person. I have no stalling, jerking or unstable rpm issue. Even i took car to an mechanic that used tech2 and said there is no code. I told him to check readings/trims but he said there is no code which means everything is fine. Acceleration is very good but not smooth and quite because engine makes loud valve train noise like lubrication is not good. I am confused because sometimes i feel like its sensor issue. Whats your think guys does ignition issue cause to run that rich ? Tailpipe is carbon coated and exhaust is very smell is very fainting. Please guys help me i am very upset. Engine is well maintained and i do regular oil changes after every 5000 km. No oil burning or smoke issue at all .
I have Holden Caprice/Statesman 2005 with Stock LS1 GenIII. I am getting 8 mpg average. People said they are getting around 500 km on full tank but i am getting around 350 km. I spent a lot of money and also took car to many mechanics but they found nothing. Plugs are new but coils and wires are not. But how ignition can cause car to run too much rich ? Air filter is also new. Also there is very minor misfire that only mechanic can feel it not normal person. I have no stalling, jerking or unstable rpm issue. Even i took car to an mechanic that used tech2 and said there is no code. I told him to check readings/trims but he said there is no code which means everything is fine. Acceleration is very good but not smooth and quite because engine makes loud valve train noise like lubrication is not good. I am confused because sometimes i feel like its sensor issue. Whats your think guys does ignition issue cause to run that rich ? Tailpipe is carbon coated and exhaust is very smell is very fainting. Please guys help me i am very upset. Engine is well maintained and i do regular oil changes after every 5000 km. No oil burning or smoke issue at all .