Hijet 660 CC High Fuel Consumption

Hi everybody

I am Stori from Pakistan! I bought a daihatsu Hijet 2009 Van! Its a 660 cc automatic transmission vehicle! I am facing some problem and seek your technical guidance in this regard! the fuel consumption is very high! It gives around 10 kmpl in semi urban! I changed the spark plugs,air filter and tuned the engine! But still no change in the mileage!

Plz help me!

10km pl ..... Have you got a fuel leak !!

Welcome, Stori. It's equivalent to about 28mpg. Small engine with autobox - what do you think you should get?

The rivals claim 16 to 18 Kilometers per liter. How could I check fuel leak?

PFM wrote:Welcome, Stori. It's equivalent to about 28mpg. Small engine with autobox - what do you think you should get?

The rivals claim 16 to 18 KMPL.

Aha, I was thinking MPG, Apologies.

I suppose it could be a number of things:

Tyre Pressure
Fuel Pressure Regulator
Coil
HT Leads
Worn Timing Belt

Well your getting 29.7mpg

Which is really not bad if you live in a hilly area and you carry a load.

But if its empty and flat, then it is poor.


I would look at:-

Is the cam timing correct
Is the ignition timing correct
Is the ignition system in good condition
Is it using all of its gears - does it make it to the overdrive gear.
Are the brakes not binding.
Are the tyres correctly inflated.

Thanks a lot to all for your so kind support! I will check these things & would let u know!

Mine,but it's a 4x4 one with somr load and winter tires always on, has a fuel consumption of 8.5/9 km/l on lpg...