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Discussion Starter · #1 ·
Ok. Here's my problem. I bought, in September, a nice K-Reg Ford Escort, 1.6 litre fuel injection second hand. It had 60,000 or so on the clock. Apart from a nackered heater which I recently had sorted, the car works ok, and, in November, it passed its MOT just fine. But my problem with it is this....

It is drinking petrol up LIKE MAD. I would honestly say I barely get over 100mph and I'm down by HALF A TANK. I'm filling it up constantly.

I don't think there's a leak (well, I can't see any petrol coming out from anywhere, even when its left for ages) but, I often notice how the gage seems to have dropped a wee bit every time I return to the car after it's been left stationary for a period. Much of my driving is town, but surely there's something wrong when your motor (which costs as much as £35 to fill) is dishing out around 200-225miles per full engine. ANY IDEAS ON WHAT IS WRONG!?

I sometimes think the car smells a bit petrolly and a few people think that what comes out of the exaust is too dark in colour and smoggy but... oooh, can anyone help me PLEASE.... GLYN, the amateur driver (I'm 24 and have only recently passed my driving test and this is my first motor so be nice to me) :( :(
 

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Re: My Escortdrinks more petrol than George Best drinks alco

TheAmateurNightDriver said:
It is drinking petrol up LIKE MAD. I would honestly say I barely get over 100mph and I'm down by HALF A TANK. I'm filling it up constantly.
Do you mean 100 miles from half a tank or your driving around at 100mp/h? If it's the later, that's your problem right there :)

There could very well be a leak - put some cardboard under you car overnight and look for wet spots in the morning.

perhaps there's a problem somewhere with the air intake and your mixture is far to rich?

Just a few things off the top of my head ......
 

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Discussion Starter · #4 ·
It isnt very cold, and has only ever snowed once since I bought it (three days ago). I'm in England.

Hey, I'm no mechanic but I do know that the weather doesn't have anything to do with why my car goes through petrol more frequently than anything I know! WHAT IS WRONG WITH MY CAR?

(I reckon you would be doing well if you got 250miles out of a full tank. And a full tank costs £34, maybe a bit more.)
 

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TheAmateurNightDriver said:
It isnt very cold, and has only ever snowed once since I bought it (three days ago). I'm in England.

Hey, I'm no mechanic but I do know that the weather doesn't have anything to do with why my car goes through petrol more frequently than anything I know! WHAT IS WRONG WITH MY CAR?

(I reckon you would be doing well if you got 250miles out of a full tank. And a full tank costs £34, maybe a bit more.)
Uhh, your location say's USA. WTF????

And yes, temperature has A LOT to do with the milage a vehicle gets. Trust me. Every year I watch my milage go from well over 40 imp mpg in the summer (usually around 30 deg C) to around 30 to 34 imp mpg in the winter (it's been around -15 to -20 deg C, but up to -30 this year).

A few reason's why this happens:

The colder the engine is, the less efficient it is. The colder it is, the longer it takes to reach operating temperature, thus it operates inefficiently longer.

Oil increases it's viscosity (resistance to flow) the colder it gets. It requires more work to move any component that is lubricated with oil. Grease also increases it's viscosity. Wheel bearings have more rolling resistance because of this.

Colder air is more dense, and thus requires more fuel to retain the ideal fuel to air ratio.

The milage is reallly brutal if you do a lot of stop and go driving.

How you drive also effects your milage.

How cold is not that cold?

When was the last tune up done on the car?

Matt 8)
 

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I'd be looking for a too lean mixture caused by a faulty coolant temperature sensor (actually dirty electrical contacts on a coolant temperatire sensor is all it takes) or a stuck open thermostat. Failing those I'd do a tune up, check for vacuum leaks and air leaks. Clean the MAF sensor.

I am assuming that it's nothing obvious like a transmission not going into OD or a poorly running engine, etc.
 

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zzyzzx said:
I'd be looking for a too lean mixture caused by a faulty coolant temperature sensor (actually dirty electrical contacts on a coolant temperatire sensor is all it takes) or a stuck open thermostat. Failing those I'd do a tune up, check for vacuum leaks and air leaks. Clean the MAF sensor.

I am assuming that it's nothing obvious like a transmission not going into OD or a poorly running engine, etc.
Just a little FYI

I've replaced or cleaned all these components on my car and ensured their proper operation. The car run's top notch, it just uses more fuel due to the cold and snow, and driving habits :roll:

His does sound a little more severe, but I think we need a better description on how he drives, what he drives in, and what kind of shape the car is in, as well as what work has been done to it lately :wink:

And who is George Best :?

Matt 8)
 

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O2 Sensor.
A bad or slow O2 sensor will cause an engine to run very rich. It will eat gas like you wouldnt believe. Sometimes it can cause the engine to run so rich it wont even run but for short durations. Worthwile investment, check it out.
 

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you're all wrong. except for dirty jim.

sounds like the 02 sensor shat the bed. when your o2 sensor dies and your ECU doesn't get a reading from it, it doesn't know the oxygen content of the exhaust. As a result it will default to a very rich setting because you can't kill an engine by running too rich, but you CAN kill an engine by running too lean, so it errs on the side of safety on the engine's behalf.

Also, don't go by your fuel gauges. Those things are inherently inaccurate.
 

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siragan said:
you're all wrong. except for dirty jim.

sounds like the 02 sensor shat the bed. when your o2 sensor dies and your ECU doesn't get a reading from it, it doesn't know the oxygen content of the exhaust. As a result it will default to a very rich setting because you can't kill an engine by running too rich, but you CAN kill an engine by running too lean, so it errs on the side of safety on the engine's behalf.

Also, don't go by your fuel gauges. Those things are inherently inaccurate.
Could very well be his problem.

I also replaced the O2 sensor within the last year :wink:

Matt 8)
 

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Siragan...I just put the messed up.
"WOW, Thank you for the Info I didn't know.
I have a problem since I put the headers and hi flow cat. My air flow show as if i'm runing real lean but I'm get like 18 to 20 miles and burning twice the full and less power till like 3000 rpms. I was thinking its a sensor . I,m sorry for being Dum but i don't know much about engines :cry:
but it looks like it might be what you guys are saying here! My radiator fan just went, fried. So i think i have to check the thermostat or the temperture sensor and the 02 sensor, Anything else you can suggest? :cry
and of course replace the fan :cry:
 
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