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Poor gas mileage, misfire or the plugs have over 60,000 miles on them. Be careful when you replace the plugs. Don't use the cheap ones, I did that and my 98 ZX2 ran like crap. Put the more expensive ones in like Bosch Platinums or better yet get the Motorcraft Plugs from Auto Zone and you'll be fine... I did this and my gas mileage JUMPED from around 25 MPG up to 36 MPG.... Put a little antisieze on the threads to before installing them, this will make easier the next you change them to get them out.
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∙ 14y ago
Wiki User
∙ 13y agoSpark plugs are cheap so, when you pull them to read them, don't put them back in. Replace them with new. To read the plugs, you need to compare them to the pictures at the link. They will tell you about your engine's health. Fouled plugs are not the problem, they are the symptom.
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∙ 13y agoyou should do a tune up every 3 thousand miles.. for the more experienced you could clean and re gap your spark plug to save yourself a few bucks and not loose power
Wiki User
∙ 13y agoPoor performance, hesitation and rough idle could be signs of worn out spark plugs.
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Do bad spark plugs cause a battery to go down?
No, that will have no effect on the battery.
Have a idle problem with a 98 windstar 3.8idles good when cold idles rough and stalls when warm works fine when driving?
The most common reason for a vehicle to run rough when it is cold is bad spark plugs or bad spark plug wires. Change the spark plugs and spark plug wires.
Will a 4 cylinder not start with 2 bad spark plugs?
It should try to start at least. It may or may not actually start but you should hear it fire on the 2 good plugs. Why not just replace all 4 spark plugs?
If your spark plugs are bad will your car start?
your engine will start but run badly on a multi cyl. ie. more than one only 1 plug may be down, not often more than 1 together
Change spark plugs 2005 Kia Sedona?
Changing spark plugs is relatively easy. Disconnect the batter and spark plug cables, and remove the old spark plugs. Next replace the spark plugs with new ones, reconnect the spark plug cables and battery.
What causes spark plugs to stop firing?
No spark from coil, bad plug wires, or bad plugs.
Will bad spark plugs cause an engine to burn oil?
No, but burning oil will give you bad spark plugs.
Can bad spark plugs cause your car to lose power and backfire in the intake manifold?
having bad spark plugs could effect how the spark sparks and when it sparks. new plugs is never a bad idea
Whats wrong with your 1990 Chevy lumina if the spark plugs are not firing?
you are not getting spark. this could be from a bad alternator, bad spark plugs, bad spark plug wires, or bad engine coils. The spark plugs and wires are the cheapest so try putting in new ones of those first.
My mechanic told me my crank sensor on my 2000 Chrysler sebring went bad so he changed it and then the spark plugs was the changing of the spark plugs necessary?
There is no way for us to know that.
What is the cause of shaking due to acceleration?
Bad spark plugs, spark plugs wires, etc.
Is it bad to change spark plugs early?
No.
Will a bad alternator cause new spark plugs to smoke?
Spark plugs don't smoke. A bad alternator would cause a dead battery.
Do bad spark plugs have to do with charging the alternator?
Spark Plugs do not affect your alternator. As long as your engine is running then it should be charging unless your alternator is bad
Does bad spark plugs give you a rough idle?
Yes. Bad spark plugs, bad spark plug wires and a bad distributor cap are the common causes of rough idling. If it has been a while since you changed these components, do so.
Could bad spark plugs make a engine shake?
Bad engine cushions can make the engine shake. bad spark plugs cause malfunction as the car starts running.
Can bad gas foul spark plugs?
yes
