my mpg is in single digits
i haven't seen this bad mpg during my entire life. i know FD consumes a lot but thats to much. i see single digits durings city driving is this normal? how can i diagnose? i searched and found some info but not that much. i will replace O2 sensor but whats next? my car has only intake and exhaust
I can't answer that because I have never run my tank out. In fact, I don't remember ever running it until the low fuel light came on. Mazda claims that the tank holds 20.3 gallons (or something like that). I believe them.
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Joined: Sep 2006
Posts: 393
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From: Tbilisi
Sure you don't have a Hummer engine installed? My car's millage on the highway is in the 20s. If I get on it, I can drain a tank in a very short distance but I never actually did the math.
You are right to always let it warm up. I would go back and check the spark plugs. Do they smell like gas? How fowled up are they? White? Black? Are they OEM (NGK)? Change them =$30
Next, you should be changing out the fuel filter every 30k miles, if you are not sure if it was done--it wasn't. The filters are $25, but they are a major pain in the *** to change out. Check to see how dirty the fuel in it is.
Third, pull out the injectors and send them to a cleaning/balancing shop. This will cost you a little over $100 and give you piece of mind.
Basic maintenance that will cost you less than $200.
You are right to always let it warm up. I would go back and check the spark plugs. Do they smell like gas? How fowled up are they? White? Black? Are they OEM (NGK)? Change them =$30
Next, you should be changing out the fuel filter every 30k miles, if you are not sure if it was done--it wasn't. The filters are $25, but they are a major pain in the *** to change out. Check to see how dirty the fuel in it is.
Third, pull out the injectors and send them to a cleaning/balancing shop. This will cost you a little over $100 and give you piece of mind.
Basic maintenance that will cost you less than $200.
Sparks are NGK BUREQ7-s i will change them. I can not identify how fouled they are, i cleaned them, they had carbon deposits on them.
I already have the fuel filter, i will replace it. how does fuel filter affect MPG?
I will clean injectors as well
Last edited by beqa16v; Feb 1, 2008 at 03:30 PM.
I win
Joined: Jun 2004
Posts: 1,875
Likes: 2
From: NJ
There is no way you ever got 30 mpg (or even close to it) on a tank of gas with combined city/highway driving. Getting 30 mpg on strictly highway mileage is just about impossible.
If your gas tank was nearly empty, you didn't even get 20 mpg on that tank. I'm not sure you should be bragging. An FD gas tank is just over 20 gallons.
If your gas tank was nearly empty, you didn't even get 20 mpg on that tank. I'm not sure you should be bragging. An FD gas tank is just over 20 gallons.
I am in no way bragging, was just posting what I thought and felt. I think it gets great gas mileage, I am not use to getting 30-50mpg, I am very satisfied. Stop hating...
Racecar - Formula 2000
Joined: Sep 2002
Posts: 4,033
Likes: 369
From: Bath, OH
Ok sorry, I didn't do my math and just threw it out there. So lets say 18-24mpg, around 16/17 gallons filled my tank.
I am in no way bragging, was just posting what I thought and felt. I think it gets great gas mileage, I am not use to getting 30-50mpg, I am very satisfied. Stop hating...
I am in no way bragging, was just posting what I thought and felt. I think it gets great gas mileage, I am not use to getting 30-50mpg, I am very satisfied. Stop hating...
I accept your apology
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