The auto gurus, my car is consuming fuel at alarming rate. Can't used 30 litres from Agege to VI.

With the check light on, the car was scanned and error code was P1491.

The ERG valve was removed and was thoroughly cleaned, the EGR chamber plate was cleaned as well but no improvement. The check light came back.

The EGR valve was replaced but no improvement. There is no black smoke emmitting from the exhaust.

The car is 1996 Honda Accord (F22B1), I4 but double exhaust.The EGR valve is located on the fuel rail.

Surprisingly, I got a manual on 96 Accord F22B1 from Honda Hookup today, a diagram from the manual depicts 2 EGR valves. 1 on the fuel rail and the other along the ABS pipe lines.

We have been working on the one on the fuel rail. Can ERG failure cause significant drop in fuel consumption efficiency?

I can hardly use this car because of this abnormal fuel consumption.

Seinna, Ikenna, Gulfer, Sultan and other gurus please help oooo.