What are the causes of high fuel consumption

There could be several reasons why your Daihatsu Terios is consuming too much fuel. Here are some possible causes and remedies.Driving habits: Your driving habits could be the cause of the high fuel consumption. Aggressive driving, speeding, and rapid acceleration can all increase fuel consumption. To remedy this, try driving more conservatively and avoid sudden stops and starts. Tire pressure: Low tire pressure can increase fuel consumption. Make sure your tires are properly inflated to the recommended pressure levels. Air filter: A dirty air filter can cause the engine to work harder and burn more fuel. Replace your air filter regularly to keep it clean and functioning properly. Fuel injectors: Dirty or clogged fuel injectors can cause the engine to burn more fuel. Have your fuel injectors cleaned or replaced if necessary. Oxygen sensor: A malfunctioning oxygen sensor can cause the engine to burn more fuel than necessary. Have your oxygen sensor checked and replaced if needed. Spark plugs: Worn or dirty spark plugs can cause the engine to run inefficiently and burn more fuel. Replace your spark plugs regularly to keep them functioning properly. It's important to have your vehicle inspected by a qualified mechanic to determine the root cause of the high fuel consumption. By addressing the underlying issue, you can improve your vehicle's fuel efficiency and save money on gas in the long run.

Yes. You the car can drive as usual without thermostat but it will cause high fuel consumption.
Because when engine in cool temperature it will in rich mode (more fuel) to heat up. If without thermostat to cruising in highway the car will become high fuel consumption.

Check cylinder compression.
Any applicable trouble codes?
What about a tune-up?
With any problems after engine over-haul, I always check cylinder compression.

The computer will very likely be generating engine fault codes if you have quite excessive consumption and there is no point in guessing what the problem is as there can be numerous causes. You have not mentioned if you have a check engine light showing but if you don't just yet you soon will if the problem persists.

1. Go to a reputable mechanic and have the car scanned for fault codes because it will be very likely throwing some codes if you are having a high engine fuel consumption issue (as opposed to a loss of fuel from the fuel system due to an external fuel leak).

2. On thing you can do yourself is remove the old dusty air filter element in the air intake box ( which no doubt has not been changed since ????) and put in a new OEM air filter unit. A dirty clogged unit will cause your engine to run poorly.

high fuel consumption Petrus, sticking E brake, poor gas, tune up needed, lazy O2 sensor,
leaking injectors, driving habits, etc. all can cause more fuel consumption. Have it scanned to help determine cause.

Adding fuel to the fuel tank is absolutely unrelated to to any change in engine oil pressure.
The oil pressure will be higher when the engine oil is cooler and lower when the engine oil has warmed up.

If you are experiencing abnormally high oil pressure on start up I suspect you are running the incorrect type and grade of oil in the engine. Only use the oil specification(type and grade) listed by the manufacturer for your engine and nothing else.. If you are unsure what that is then it is specified in your owners manual for the vehicle.

High fuel consumption has also nothing to do with your engine oil pressure. If you are experiencing high fuel consumption then please read and examine these factors..........................
Finding and Fixing the Causes of Poor MPG

Do you have black smoke or what looks like soot coming out of the tail pipe. The check engine light monitors fuel pressure through the computer and pressure regulator. It will come on if the pump pressure is too high or too low. If the pressure regulator is faulty it could cause excessive fuel consumption,

what motor do u have in the car , there are only a small number of things you can do to help this , a good tune up , K&N air filter , headers ,good tires with proper air . make the car lighter depending on the size of your motor these are the main things you can but if you have a big block motor in yout car , get another car , if you have a 4 cyl already , you really are getting good milage per gallon , get a bike if you are a cheap skate

+ air intake : This will cover the cleanliness of carburetor or throttle body and the air filter. Make sure there is no obstruction in the air intake system and no carbon deposits or dirt. This is the most important part to get better air flow and fuel consumption. also tires, make sure there at proper inflation. please go here to read more because there are numerous causes for this.www. kereta.info/causes-of-high-fuel-consumption good-day !

Hi there,

As you have not stated the vehicle MODEL or Year of Manufacture, I will provide a 'general' solution:

There could be numerous causes for high fuel consumption, but if you have used this amount of fuel in such a short journey, there would have to be leaking fuel somewhere.

However, the only true method to measure "ACTUAL" fuel consumption (disregard trip computer) is:

- Completely fill tank to a pre-determined point inside the fuel tank filler tube.
- Set your cluster Trip Meter to: 0000
- Drive vehicle for 6 - 15km and return back to the same gas station pump used previously.
- Completely fill tank to the same point inside the fuel tank filler tube, where filled previously.
- Note the quantity of litres required to fill to that same point in the filler tube.
- Divide the litres used, by the total Km travelled on your Trip Meter.
- If the value calculates less than 20 (carburettor engine); less than 15 (EFI engine), then consumption is acceptable.

Note: if value is above these numbers, then you have a fuel leak, or a problem with your vehicle's carburettor adjustment. EFI engines can have numerous causes, including electronic sensor faults etc.

Cheers,