December 05, 2022, 06:46:23 AM
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Author Topic:  Low mpg bad fuel economy  (Read 4193 times)

Offline Mml665

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Low mpg bad fuel economy
« on: November 05, 2022, 12:01:45 PM »
So I noticed poor fuel economy, but I figured my driving style was the cause, however the roommate (aka: legal partner/wife) lol has been daily driving the Lincoln for a month and is complaining.  Her driving style is not spirited like mine.

Daily commute is 22 miles and is going thorough a tank  in 5-6 days

Would worn plugs and or coils cause a drastic change in mpg?

If so what plugs and coils are recommended?
« Last Edit: November 05, 2022, 12:09:25 PM by Mml665 »

Offline Macgyver

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Re: Low mpg bad fuel economy
« Reply #1 on: November 05, 2022, 03:32:26 PM »
Plugs for sure can cause bad MPG. So can Winter fuel if you live in the north.


A stuck injector will as well butt that should throw a code.


A vacuum leak will cause bad MPG.


Scan for codes and see what happens there.[size=78%] [/size]

So you are saying. 150 ish miles and you are going through 15 gallons of gas ? Thats 10mpg.

Offline SHOdded

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Re: Low mpg bad fuel economy
« Reply #2 on: November 06, 2022, 01:53:33 AM »
MY, mileage, maintenance history, ambient temps at cold start ...

22 miles roundtrip or oneway?

remote starting / extended idling? all highway, mostly highway, mostly city, ?
2007 Ford Edge SEL, Powerstop F/R Brake Kit, TXT LED 6000K Lo & Hi Beams, W16W LED Reverse Bulbs, 3BSpec 2.5w Map Lights, 5W Cree rear dome lights, 5W Cree cargo light, DTBL LED Taillights

If tuned:  Take note of the strategy code as you return to stock (including 3 bar MAP to 2 bar MAP) -> take car in & get it serviced -> check strategy code when you get car back -> have tuner update your tune if the strategy code has changed -> reload tune -> ENJOY!

Offline Mml665

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Low mpg bad fuel economy
« Reply #3 on: November 06, 2022, 09:11:08 AM »
Plugs for sure can cause bad MPG. So can Winter fuel if you live in the north.


A stuck injector will as well butt that should throw a code.


A vacuum leak will cause bad MPG.


Scan for codes and see what happens there.[size=78%] [/size]

So you are saying. 150 ish miles and you are going through 15 gallons of gas ? Thats 10mpg.
22 miles round trip, I scanned it with my Autel scanner and  no injector code. How would I check for vacuum leaks?
« Last Edit: November 06, 2022, 09:14:37 AM by Mml665 »

Offline Mml665

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Re: Low mpg bad fuel economy
« Reply #4 on: November 06, 2022, 09:12:53 AM »
MY, mileage, maintenance history, ambient temps at cold start ...

22 miles roundtrip or oneway?

remote starting / extended idling? all highway, mostly highway, mostly city, ?
22 miles round trip, city driving, no extended idling. Typical Michigan ambient temps.

Offline Macgyver

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Re: Low mpg bad fuel economy
« Reply #5 on: November 06, 2022, 12:46:45 PM »
I would change the plugs just because its fairly easy.

Check the tire pressure.

Change fuel brand. Use Shell if you are using Sunoco etc.

10mpg is way too low. There has to be an easy reason.

Offline Mml665

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Low mpg bad fuel economy
« Reply #6 on: November 07, 2022, 09:52:18 AM »
I would change the plugs just because its fairly easy.

Check the tire pressure.

Change fuel brand. Use Shell if you are using Sunoco etc.

10mpg is way too low. There has to be an easy reason.


I will change plugs soon.

 


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