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Q: Will new spark plugs make my gas mileage better?
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If you replace the spark plugs will it make a car faster?

Changing your spark plugs could theoretically make your car faster but not enough to make a noticeable difference. Changing your spark plugs when they are worn will increase your fuel mileage slightly.


Will dual exhaust and hotter spark plugs change the mileage on a 2003 Ford Explorer Sport Trac?

Yes. It could make it better or worse.


Do new spark plugs make engine run better?

it can


What brand of spark plug wires will help my gas mileage?

Brands such as NGK, and Bosh both make plugs that are said to help gas mileage.


All 4 spark plugs were bad on your car will this affect your engine after you fix it?

It should make it run better and get better mileage after you replace the plugs with new ones. You may also want to replace the plug wires if the car has over 100,000 miles or is 10 years old.


What causes better gas mileage?

In short...a bigger bang and cooler air will cause better power and mileage. There are lots of ways to ahieve a bigger bang but not all those ways in combination are good on the engine.the choices of ways to get a bigger bang range from cold air intakes and cool cans to silver spark plugs and capacitor bearing spark plug wires will get you better mileage just make sure you choose the right combination wisely or your bang can turn into a big boom.


What are the best spark plugs for a 4.3 v6 vortec engine?

AC are the OEM spark plugs and they are excellent plugs. I would recommend you buy AC/Delco Iridium Spark Plugs. They are as good or better than any others you can buy. NGK are also great plugs and I have been told they make the AC plug but I cannot verify that.


What are the best spark plugs for opel vectra?

At one time,the only spark plugs for vauxhall/opel in general were AC-Delco.Don't know if main dealers still supply them or not? These days,I fit NGK to everything from my lawn mower to small engined light aircraft.There is a saying that NGK make spark plugs,the rest make posh fishing weights!I have yet to have an NGK fail before completing it's full mileage.


What do old spark plugs do to a car?

Old spark plugs can make a car misfire, run rough, and not fire at all.


Where are the spark plugs located on a 99 Dodge Durango?

The spark plugs?æon a 1999 Dodge Durango are at the side of the engine. Make sure that the engine is cool before accessing the spark plugs.


How do you fix a random mifire on a 97 Chevy 1500?

generally, a tune-up is required,,, replace spark plugs,wires,cap & rotor,,, and use platinum plugs.. It really does make a difference in these engines, as well as the platinums will last ALOT longer and deliver better performance and mileage,, hence pay for themselves in the long run,


What Can I Do To Make My 2000 Mercury Mystique Accelerate Better?

You could change the spark plugs, sprak plug wires, computer chip.