In the system inspection, H2O sensor indicates lean at stall test. And therefore the purpose of the inspection is to check fuel line. Because low fuel pressure could be caused by blocked fuel line.
Check the fuel for excessive water,alcohol,or other contaminations.
Install a fuel pressure gauge.
Engine "ON"
Check fuel pressure of the fuel pressure gauge.
Specification : Approx. 350 kpa (3.5㎏/㎠, 49.8psi) at idle
(Fuel pressure is kept Approx. 360 kpa (3.6kg/㎠, 51.2psi) after it dropped to Approx. 320kpa(3.2kg/㎠, 42.7psi) at rapid accelerating and stall test.)
Is fuel pressure normal?
YES
Fuel pressure is OK.
NO
Check fuel filter and fuel hose(whether it is blocked or not) and replace fuel pump.
