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Only if there's something wrong with your old spark plugs.

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16y ago

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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.


How do you know when you need new spark plugs?

Gradual lack of power Fuel mileage drops Mileage/age of vehicle Gradual lack of power Fuel mileage drops Mileage/age of vehicle


Your 1997 F250 is missing out and vibrating how do you know if it is spark plug or fuel pump?

Start by changing the spark plugs


1999 Dodge durango why is fuel mileage down after changing plugs wires cap and rotor?

The gap on the plugs might not be gapped properly.


Will changing high tension wire improve your mileage?

Changing leads will make ignition system work more efficiently (Coil will not be working so hard to deliver voltage to spark plugs as resistance in new leads will be low). So spark will bebetter. Fuel will burn easier and yes mileage will be improved but not so much that you would see huge gains.


What are the indications a car neds new spark plugs?

Poor performance, poor fuel mileage, hesitation, rough idle,


Do new spark plugs help gas mileage?

yeah they allow the fuel/air mixture to burn more efficiently


When do you change spark plugs on Acura RSX?

Change them at 100,000 miles or sooner if you experience poor performance or poor fuel mileage.


Will changing spark plugs and wires increase mpg on 04 Nissan Titan v8?

Changing spark plugs and wires on a 2004 Nissan Titan V8 can potentially increase fuel efficiency (mpg) if the old plugs and wires are worn or damaged. Fresh spark plugs ensure better combustion, while new wires improve the electrical connection, leading to more efficient engine performance. However, the extent of the improvement will depend on the overall condition of the vehicle and other factors like driving habits and maintenance. Regular maintenance is key to achieving optimal fuel efficiency.


Why does It spits and sputters and misses?

Could be several causes: Clogged fuel filter. Clogged/dirty fuel injectors. Spark plugs need changing.


Why wont a 1992 dodge spirit start after changing head gaskets and plugs?

incorrect ignition timing, no fuel pressure, or no spark.


Why do spark plugs get a brown tint to them?

Spark plugs can get a brown tint on them when certain additives in the fuel are burned.