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What are the best spark plugs for gas mileage?

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You can always buy bosch platinum 4 plugs , very highly rated, but as for fuel mileage most of what you read is mostly myth, the gain you get would take forever to make up the difference in price, best to get a good name brand at a level cost, not the cheapest way to go but best for most car use

Posted on Sep 12, 2010

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Posted on Jan 02, 2017

perpetually
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SOURCE: running rough,doing bad on gas mileage.

Check your timing with a timing light. Sounds like it is off a little.

Posted on Oct 17, 2009

  • 170 Answers

SOURCE: spark plugs

There are many types of fancy plugs out there today. Most will promise one thing or another, and cost more than they should.

Best bet is the OEM plug that came with it. Dodge/Chrysler normally comes with Champion plugs.

They are good and you won't go wrong with them. Your owners manual an local parts store as well will have the part numbers.

As far as mileage goes, proper maint such as air filters, oil changes, and tune ups are the biggy. Second, driving gently instead of like you are in an episode of COPS can make a huge impact on economy. Proper tire inflation is helpful also.

Don


Posted on Apr 17, 2010

GARYca
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SOURCE: i have a 2002 nissan

are the spark plugs gap set to manufacturer specs?

Posted on Sep 07, 2011

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Have 2008 kia rondo misfire on cylinder 2 also throwing code for map sensor...car drives and runs not getting best gas mileage and idles/runs rough where should I start thanks for your time


Misfire is caused by spark plugs, coil packs (if you have them), possibly wiring issues.
Don't you have long, long warranty on that car?

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I have a 2007 1500 suburban - check engine light came on and started missing - code showed cylinder 1 missing - i changed spark plugs and noticed that the #1 spark plug had a piece of the ceramic broken...


cylinder 1 getting too hot causing ceremic crack could have wrong heat range plug in which spark plug too hot.or need replace spark plug wires.one plug wire could be bad best replace all spark plug wires.

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Motor slows down no power pedal to floor no power stop moveing


Have you replaced your fuel filter? how about the quality of the fuel in your gas tank? Have you tried gas dryer for the fuel tank? checked the spark plugs and/ or the ohms resistance on the spark plug wires?

If yes, and you have more details, such as what was happening when the problem first occurred, engine size, mileage on engine -- or any other pertinent information, feel free to re-post.
Best regards
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Sep 24, 2011 | 1993 Dodge Caravan

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Just had a new fuel pump, fuel filter, spark plugs and coil pack put in, was getting 27miles to the gal, now I am getting 15!!!


possible problem is that you did not put ac delco plugs in the vehicle and now you are getting bad gas mileage.gmc vehicles only require that you put ac delco spark plugs any other type and you get bad gas mileage or poor performance

Feb 12, 2011 | 2003 Oldsmobile Alero

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1999 buick century 85,000 miles Getting poor fuel economy using 87 octane. keep tires inflated properly new air filter changed spark plugs(not wires) and 1 of the o2 sensors Mechanic said only 1 sensor...


When you do a tune up you should replace the cap, rotor, plugs, wires,airfilter, and fuel filter, this will insure that you get the best mileage. Also have the coil checked, for proper resistance. If it starts to get weak it will throw a lower than normal voltage spark. You can not look at spark plug wires and tell if they are good, this can only be done with an ohm meter. The resistance should be 3000 to 6000 ohms per foot of wire. One other note is if your car feels sluggish or lacks power is to check the catalitic converter. These clog up and stop air flow thru the engine. There are many many things on cars that will result in poor gas mileage. A good mechanic doesn't go by just the codes a car spits out, they have to read the numbers and diagnose what is wrong.

Jan 22, 2011 | 1999 Buick Century

1 Answer

Spark plugs


There are many types of fancy plugs out there today. Most will promise one thing or another, and cost more than they should.

Best bet is the OEM plug that came with it. Dodge/Chrysler normally comes with Champion plugs.

They are good and you won't go wrong with them. Your owners manual an local parts store as well will have the part numbers.

As far as mileage goes, proper maint such as air filters, oil changes, and tune ups are the biggy. Second, driving gently instead of like you are in an episode of COPS can make a huge impact on economy. Proper tire inflation is helpful also.

Don


Apr 15, 2010 | 1997 Dodge Caravan

1 Answer

Poor gas milage


Poor gas mileage can have many roots but the best way is always to start with the ignition system. Have a look at the sparkplugs, if you've got the I6 4.0 engine it is easy to check them. Spark plugs are cheap and easy to replace. Also check the spark plug wires, be sure the connections are tight and free from rust. Check the distributor cap and rotor and if they are rusty/greasy clean them up. After you've cleaned and checked the ignition items (spark plugs, wires, distributor cap and rotor) you can move on to the fuel injection system.
Replace the air filter, it is cheap and most people overlook that single item.

When was the last time you replaced the fuel filter? A clogged fuel filter reduces power drastically which in turn affects fuel mileage.

Jan 27, 2010 | 1994 Jeep Grand Cherokee

1 Answer

What's the best spark plug for an 2005 5.3 silverado?


the best spark plug....."you know....there is this brand of spark plug"...but they are not really spark plugs they are "pulse plugs" or so they call them........"they are supposed to improve gas mileage and torque and horse power......."except they are like 24 bucks each"...

hope this helps.XD

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