Gas mileage
#21
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Might not hurt to run some fuel injector cleaner too, now that I think about it. I've had good results with Techron and BG44K.
Last edited by Cavero; 2/15/16 at 07:46 AM. Reason: added BG44K
#22
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Seems reasonable (sounds good in my own head at least), but also seems like the sock would have to be pretty well plugged though.
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#23
I'm not trying to be evasive. Every tank I have filled up between 13-15 gallons since October and I'm getting max of 250 miles. Now let's say for instance I fill up 13 gallons and I get 250 miles until I fill up and it takes 14 gallons to fill then next time. So I used 14 gal for roughly 18mpg. Now my computer uses an instant average which has huge fluctuations I know that. But to go from 350 miles to 250 miles using the odometer for a single tank is a huge difference. I'm talking a 7mpg difference. That's the problem.
#24
My only thought on this would be that maybe with a plugged up sock, the pump can't maintain the fuel system pressure or flow that the injectors are designed for. So you don't get a fully atomized spray and you don't get as complete fuel burn. Then its kind of similar to a dirty injector. You end up using more fuel because the PCM has to put in a larger duty cycle on the injector to burn the same amount of oxygen.
Seems reasonable (sounds good in my own head at least), but also seems like the sock would have to be pretty well plugged though.![Dunno](https://themustangsource.com/forums/images/smilies/dunno.gif)
Seems reasonable (sounds good in my own head at least), but also seems like the sock would have to be pretty well plugged though.
![Dunno](https://themustangsource.com/forums/images/smilies/dunno.gif)
#25
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Nope, not close, but a good reach. If the fuel was restricted at the pick up, the pump duty cycle would increase to maintain pressure, and if it couldn't you would have a CEL. If not enough pressure is available at the injector it would run lean and increase mileage anyways. Yes the car would try and add fuel to compensate but you still wouldn't run rich. The computer will make small adjustments but it will not change mileage by 30%.
#26
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ha ha, don't overthink it, you might outsmart yourself ![Icon Mrgreen](https://themustangsource.com/forums/images/smilies/icon_mrgreen.gif)
keep it simple: anything that interferes with the car running at the most optimum, can reduce fuel efficiency. It seems like restricted fuel filter might make it run lean if anything . . . but that is not going to be as efficient.
So it's always a good idea to just do all the basic maintenance first (which is usually relatively cheap) before chasing gremlins.
![Icon Mrgreen](https://themustangsource.com/forums/images/smilies/icon_mrgreen.gif)
keep it simple: anything that interferes with the car running at the most optimum, can reduce fuel efficiency. It seems like restricted fuel filter might make it run lean if anything . . . but that is not going to be as efficient.
So it's always a good idea to just do all the basic maintenance first (which is usually relatively cheap) before chasing gremlins.
#27
ha ha, don't overthink it, you might outsmart yourself ![Icon Mrgreen](https://themustangsource.com/forums/images/smilies/icon_mrgreen.gif)
keep it simple: anything that interferes with the car running at the most optimum, can reduce fuel efficiency. It seems like restricted fuel filter might make it run lean if anything . . . but that is not going to be as efficient.
So it's always a good idea to just do all the basic maintenance first (which is usually relatively cheap) before chasing gremlins.
![Icon Mrgreen](https://themustangsource.com/forums/images/smilies/icon_mrgreen.gif)
keep it simple: anything that interferes with the car running at the most optimum, can reduce fuel efficiency. It seems like restricted fuel filter might make it run lean if anything . . . but that is not going to be as efficient.
So it's always a good idea to just do all the basic maintenance first (which is usually relatively cheap) before chasing gremlins.
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#29
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actually I cleaned the MAF with some special spray I got at kragen. Now my mpg is a lot more active and fluctuating. I haven't run a full tank through it yet so I don't know what I will get. As for my previous posts, I should say yes that 350 miles out of a tank was mostly freeway and 300 was kind of the norm but 200 is lately. Anyway I'm interested to see how this tank will run out.
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2/4/16 02:56 PM