Question about 1982 Honda VF 750 S

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My '82 Sabre gets poor gas mileage. I have changed the spark plugs and am building a set of air filters... what else can cause this?

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Riding too hard! air conditions, dirty air filter, and lowsey cheap gas that they have now a days...one other possibility that i can think of that might cause this is brakes to tight.

Posted on Sep 13, 2009

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Do you have any suggestions for my 2004 malibu 2.2liter engine losing gas mileage besides cold and tire pressure


poor spark plugs, dirty injectors, poor gas, thermostat opening too soon, how you drive the car, dirty air filter, jack rabbit take off from a stop. just some things that can cause this.

Feb 05, 2015 | Cars & Trucks

1 Answer

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

1 Answer

My 02 Impala has been getting poor gas mileage,I had the plugs changed and still not any better.Any suggestions?


sure plenty. Bad injectors, clogged air filter, bad spark plug wires, improper tire pressure, transmission lost overdrive, bad temp sensor.... just to name some.

Nov 18, 2011 | 2002 Chevrolet Impala

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

I HAVE A 2003 KIA SORENTO LX & IT IS USING TO MUCH GAS LATELY>>>HOW WILL I KNOW IF I NEED MY FUEL PUMP REPLACED? WHERE IS THE PCV VALVE LOCATED?


the fuel pump will not cause bad gas mileage.the spark plugs may need changing,fuel filter,air filter,plug wires(basically a tune-up),or the thermostat probably needs changing as this can cause poor gas mileage as it won`t allow the motor to get to proper operating temperature(computer monitors temp)and commands fuel injectors on longer(spray more fuel).driving habits change over time look at this also.cold whether driving also will use more fuel.pcv valve i can`t help you,maybe a parts store will show were it is if it has one.the only time you change the fuel pump is when it gets noisy or it quits altogether,or the pressure is good but the fuel volume is not to specs.

Apr 10, 2011 | 2003 Kia Sorento

3 Answers

What causes my toyota tacoma consume more gas to the mile than normal.


There are several issues that can cause poor gas mileage. I suggest you perform ( or have performed) a tune up. Filters, Fluids, Spark Plugs, Wires, Belts, etc.. & see if that improves your fuel economy...

Feb 25, 2011 | 1998 Toyota Tacoma

1 Answer

2003 CHEVEY BLAZER POOR GAS MILAGE Just tuned up , new wires,plugs, pvc vavle,rotor ,cap.air filter ,fuel filter, seems to run great, no check engine light, 74000 miles, new tires, only getting approx 8...


What grade of fuel are you using? There are many conditions that effect gas mileage. The way a vehicle is driven, is it shifting correctly, flooring it to get up to speed from dead stop also known as Jack Rabbit starts, driving with the defroster on when it isn't needed or the setting just above that can be used. Back in the 90's most car manufacturers made a change to their heating.cooling system that caused the AC compressor to kick in when the selector was set to defrost. This puts drag on teh motor and decreases gas mileage. Build up on valves and low compression in the firing cylinders will cause you to lose gas mileage as well. Do a compression check on the motor to make sure you don't have abnormally high compression or low compression on cylinders and use a bottle of gas treatment in your fuel to clean some of the carbon build up from injectors and valves. Also start using the Mid grade fuel. Not the High Octane in your area. In Texas we typically have 3 choices 87, 89 and 93 to choose from. Low grade is enough to run the vehicle but performance is low as well as mileage. I use the 89 octane for better performance and better mileage. The High Octane or 93 isn't really good as it leads to higher carbon build up on the valves. Also check your oil often and make sure your changing it every 4000 miles at the longest. All of this along with making sure you change the Air Filter every 5000 miles will increase your mileage.

Jan 25, 2011 | 2003 Chevrolet Blazer

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

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