Re: My mitsubishi galant 2000 model is has too much...
Run the fault codes and find the sensors that are faulty.
check for fuel leaks in the system including faulty injectors and injector seals.
have a compression test done to check condition of the engine.
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tamim13 said: 07-04-2012 02:41 PM ... 2nd picture is my fuse box (under the hood - taken from the drivers side facing the fuse box) ... I need to check my owners manual to see if the fuse diagram has an explanation of the relays as well.
i doubt very much if it would be running at 1 litre per 1 kilometer
at very rich combustion stops at 10:1 as the fuel puts he fire out
I'm not disputing your figures just I would be looking for a fuel leak from a hose , filter leak or leak in the tank or some one stealing fuel
run the fault codes
check the fuel system from tank to manifold
Fuel consumption figures usually don't mean very much as there are lots of variables affecting consumption in the real world.
The EEC force manufacturers to state consumption figures for cars sold in Europe. One or two of those are results from constant speed tests but the third is called the urban cycle which is a realistic real-world figure but don't forget the Imperial gallon is bigger than the US gallon so it is probably better to stick to litres.
Few motoring journalists have a vehicle long enough to produce useful consumption figures and simply recycle each other's information. A few journalists test a car for a week or longer and do produce their own useful figures.
When searching for reliable information it is important to know what sort of driving, the type of country, the ambient temperature and so forth as hot or cold weather can affect consumption significantly so any figures you find are fairly useless without qualifying information.
Many things can cause excessive fuel consumption. First, make sure that none of the brakes or transmission is dragging, or that the transmission is shifting properly. We had a car in the shop recently that had poor fuel mileage and one of the front calipers was dragging against the rotor. (also check the parking brake). Next, is everything up to tune? Good spark plugs, clean airfilter, good PVC, good Oxygen sensors, check for codes, etc. Check if there is a vacuum leak - (use a vacuum gauge). Lastly, if you have access to one, use a emission tester in the exhaust to see what the levels of hydrocarbons are. This will at least tell you if the engine is running clean. Sometimes poor fuel mileage might be a combination of things which all add up, like under-inflated tires, spark plugs fouled, parking brake slightly dragging and poor driving habits. I can always tell the customers who get poor fuel mileage by how often they need new brakes. Someone who lets the car coast and isn't on the brakes much usually gets much better mileage. Those who speed right up to a red light and then jam on the brakes at the last second usually have at least 20% worse mileage.
the factory mileage for fuel should be 7.2 litres per 100km but the fuel consumption will change as the car gets older so its only normal but you could improve on your fuel consumption by tuning the car
If the vehicle is in good condition, meaning all wheel bearings and tyre pressures are correct, at a cruising speed of one hundred and ten klm on the open road about eleven to twelve per litre....In town stop start driving....seven to eight per litre....Regards Johngee10
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