Question about 1998 Saturn SL

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I have a 98 saturn getting poor gas mileage, ive changed plugs whatelse can i do

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You can change the fuel filter and air filter, check the catalytic converter to see if it is plugged up which could create a restriction in your exhaust system.

Posted on May 27, 2010

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WHY DO I GET SUCH POOR GAS MILAGE ON MY CAR


A vehicle like that won't give a poor gas milage for nothing. The dealer just don't want o deal with you. I own a 2009 Nissan Versa, which is one of the best gas milage car you can get, but right now is spending way too much gas. In my case the problem is the spark plug and the air filter, and it should be good to go. Have it diagnostic. Good luck.

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Ive got a 97 mazda b2300 and it runs really rich and has poor gas mileage i recenly replaced da fuel pump and was told that it seems as if engine is getting to much fuel change fuel pressure regulator...


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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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My 1992 Saturn SL gets terrible gas mileage


Find the cause of the check eng light and find the cause of the poor mileage.

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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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My 1992 isuzu pickup use too much gas. how can I inprove my mpg.


I'm not sure of the mileage on your truck, but there are a number of things that you can do to improve your gas mileage. If the truck has over 100,000 miles, the next time you change your oil you can choose engine oil that is specifically designed for high mileage vehicles (make sure that it is the correct weight for your vehicle) Change your air filter, this has alot to do with fuel efficiency. Make sure that you get your tires rotated and balanced every 5,000 miles. Also check your tread wear on all 4 tires. If you have significantly uneven tread on your tires this can have a drastic effect on mpg. Check your plug wires: if they look worn and old replace them. If they appear to be in good shape then you can get away with only getting new spark plugs. If you are really dedicated to the truck you can always opt for a fuel system flush at your local service station, I know they offer this service at Midas in my area for $99. Lastly I used to have 98 Stratus that got poor gas mileage. I started putting a bottle of the STP treatment (in the black bottle not red) during every fill up and it averaged an extra 40 miles per tank. Hope this helps.

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1 Answer

I need to know if i need to change spark plugs


Depends. How many miles are on the car? Is it idling or running rough? Are you getting poor gas mileage? Is your check engine light on? If so, take it to Autozone and ask them to plug their code reader into your car. They can tell you if you've got a mis-fire. If you do, then sure, go ahead and change the plugs. Make sure you gap them to the correct specification and torque to the correct spec.

You could also take one of the plugs out and look at the tip. If it has a light-brown color to it and isn't covered in oil or looks burnt or black, then that plug is fine.

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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.

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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.

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You are always going to get worse gas mileage with E85 than regualr gasoline.  My sister has a colbalt and she mixes 1/2 gas and 1/2 e85.  The dealer told her she could do this to improve mileage.  I would not try it in your car unless you check with the dealer first, it could mess your engine up if you do it.  If you are getting that mileage with gasoline, then i would change spark plugs to bosch platnium 2 or something that allows more spark.

Mar 05, 2009 | 2008 Saturn Vue Hybrid

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