Question about 2004 Chrysler 300

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Fuel oder at startup poor mileage and gas oder at shutoff on 2004 300m

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Fuel pipe cracked have it replaced.Good luck

Posted on Aug 01, 2009

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1999 mountaineer 5.0v8 awd a/t poor poor poor gas mileage 10mpg @ hwy speed 55mph ! What can be so wrong ? Help randallalt@aol.com thank U :-)


poor gas mileage with any vehicle is usually due to lack of maintenance.
options to try:
replace fuel filter
replace air filter
spark plugs
timing adjustment?
let me know if any of this helps

Sep 20, 2013 | 2005 Mazda B2300 Regular

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Gas smell inside outside the car. poor gas mileage


Check the fuel hose and clamps from the filler to the tank .check hose for cracks . The smell will probably be strongest in the boot.

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Poor fuel milage


try changing fuel filter and making sure tire pressure is correct keep your car clean so air can flow freely and try an oil change all these factor into good gas mileage and you could try adding new plug wires to your tune up

May 14, 2012 | 1998 Honda Passport

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Correct fuel pressure in lbs for a 2000 dodge durango 4x4 5.9 ltr engine


The specification is 44-54 Psi. The manufacturer lists the specification with the engine idling.

Also, if fuel pressure is the cause of your problem, there will also be other indicators....

First, it will most likely set "lean oxygen sensor" codes in your computer. Also, your fuel trims will be skewed - I would recommend taking a look at that as well. Skewed fuel trims, poor fuel mileage and hesitation, loss of power, can also be caused by a dirty or defective mass air flow sensor.
Another possible cause of poor fuel mileage and poor acceleration is a restricted exhaust.(Bent or crushed tail pipe or a clogged catalytic converter.)

Jan 13, 2012 | Dodge Cars & Trucks

1 Answer

Just bought ford fiesta finesse 16 valve 03 1.2 am doing roughly 21mpg no leaks or drips this is round town and on motor way have not taken it above 65


Hi


As far as the review says the mileage should not falter since it is new as you said. However

These are the causes of a poor mileage in a car:-


Poorly Inflated Car Tires

Car tires that are improperly inflated create significant road resistance and drag on a moving car. A car engine has to work harder to propel a car forward due to this increased tire/road resistance. This resistance chips away at a car's gas mileage.


Dirty Air Filter

A dirty air filter impedes air flow into a car's engine, a process that disrupts normal engine combustion and makes it less efficient. This causes a reduction in both engine performance and gas mileage.


Bad Spark Plugs

Spark plugs are responsible for igniting a car's air/fuel mixture, an event that causes a mini explosion inside a car's engine cylinders. Bad or dysfunctional spark plugs don't fire, or ignite, properly; thus, they affect engine combustion negatively, which in turn negatively affects gas mileage.


Bad Oxygen Sensors

For a car to be at its most fuel efficient, its oxygen sensors, small and electronically operated, automatically adjust a car's air/fuel mixture and have to be functioning properly. Bad oxygen sensors cause abnormal air/fuel mixture ratios, a condition that results in poor gas mileage and poor vehicle performance.


Leaky Fuel Injectors

A car's fuel injection system is responsible for injecting precise amounts of fuel into a car's engine cylinders, where it is combined with air and ignited. For a car to perform properly, a specific amount of fuel has to be injected by each fuel injector into each engine cylinder. A leaky fuel injector wastes fuel by leaking it outside the engine and reducing the amount of fuel that makes it into the engine. This results in wasted fuel and reduced gas mileage.
It is suggested to start with a code scanner to find out if there are any stored fault codes in your car.

Also check this link for some helpful tips:-


http://www.wikihow.com/Increase-Fuel-Mileage-on-a-Car


Please get back to us if you have further query else please accept the suggestion.
Thank you for contacting fixya.com

Jul 18, 2011 | Ford Fiesta Cars & Trucks

2 Answers

Buick regal 92 3.8L Horrible fuel mileage


Sounds like you might have an oxygen sensor problem. Your catalytic converter(s) maybe defective or dirty. That in turn can dirty up the oxygen sensor. A defective oxygen sensor will send faulty info to the computer, interpreting the fumes as cold (even when the engine warms up). That causes the computer to adjust the fuel mixture to very rich, giving you poor gas mileage and the fuel smell. Hope it helps.

Mar 16, 2010 | 1992 Buick Regal

1 Answer

Does the fuel filter affect gas mileage


there are lots of things that can affect gas mileage. if the spark plugs and wires are worn out, the air filter being dirty, dirty fuel filter, proper inflation of the tires, O2 sensors that are contaminated and performing poorly. the first thing to do would be that the engine is in good working order, as in no check engine light, no misfire, etc. a poorly running engine will put out terrible gas mileage. then you can start with the things i listed.

Feb 21, 2010 | 2002 Chrysler 300M

1 Answer

POOR GAS MILEAGE


Have you changed the fuel filter? I know it sounds weird but a plugged filter will make a truck use more gas. The computer tries to compensate for less fuel by commanding the injectors to open longer. Also a plugged filter will cause excess back pressure on the fuel pump making it loud.. Good Luck.

May 29, 2009 | 2001 GMC Sonoma Extended Cab

2 Answers

Strong gas smell and poor gas mileage


If the gas odor is coming from the engine, than the problem is most likely a cracked or poorly seated fuel injector.

May 03, 2009 | Chevrolet Cavalier Cars & Trucks

1 Answer

Poor gas mileage


sounds like a dirty fuel system or carb

Dec 02, 2008 | 1991 Honda Civic

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