As a matter of surprise, Blow-by gas combustion hose was not connected, between cum-cover and intake air way after air flow meter. Judging from the clump mark on the hose, so long period of time this condition was left undone. Deeper consideration led me the conclusion that measuring mal air volume imparting less air flow because of opened blow-by gas hose. Also, blow-by oil mist gas had been scattered in the engine room.
I'll come to know how the fuel consumption would be, better or not. Any way, different signal from the air flow meter would any transition to ECU. Former mischievous person did unusual attitude?
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