Spark plug, air ,oil filter replaced. throttle body service done .sensors cleaned. scanned no problem in any sensor. no carbon at silencer.no any abnormal sound in engine. but fuel consumption is very high.
Faulty or blocked fuel pressure regulator?
SOURCE: my chevy s10 failed emissions
Have your cat. converter checked out. I just had one of these for the same reason in my shop today.
SOURCE: PO171 OBD-II Trouble Code " System Lean To Bank 1
Check PCV valve and be sure it is not stuck open. Check for vacuum leak at intake manifold.
SOURCE: wont start has fuel and has spark
RC ralston
Your problem is a leak in the cpi pletium most likely the pressure line has a leak
had same problem with mine $45.00 PRESSURE LINE KIT AND $15.00 GASKET FOR PLETIUM and 2 hours labor problem sovled.
You can remove vortec cover and remove air regulator to look inside pletium. I had gas vapor on driver side . that is where fuel lines are. fuel regulator is on passenger side. turn key on and look in hole and see where fuel is spraying. taking pletium off you can again turn key on and make sure where fuel is coming from.
SOURCE: 1997 dodge dakota v6 engine wont start replaced
turn the key to the on position a see if you can here a buzzing sound around the fuel tank,if you don't hear a sound then. (be very careful while doing this) with the key off take a fuel line coming from the tank loose,make sure its pointed away from you and turn the key to the on position,see if any gas comes out,if not then your fuel pump is probably bad.
SOURCE: Very high fuel consumption on 2002 Honda Odyssey
transmission slipping dragging brakes.timing off worn timing belt .bad spark plugs + wires +coil.defected valves and worn cam shaft.use scanner to check oxygen sensor. run engine 5 minutes look at scanner . should read closed loop . if read open loop replace oxygen sensor.
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