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Bad spark plugs can indeed cause an engine to idle rough. If any of the spark plugs are misfiring or are not producing enough of a spark to ignite the fuel, then not only will the engine idle roughly, it will alwso waste gas. If may seem as though it is running fine when you are driving however, you still may be wasting gas and your pickup may not be as fast as it should.
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Does bad spark plugs give you low idle?
Doubtful. Bad spark plugs would give you a rough idle, hesitation and poor performance. And they may also give you a P0300 code for random misfire.
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.
Why does a Chrysler Pt cruiser Idle rough after new spark plugs?
Maybe when they put the spark plugs in they were not gapped right or they maybe the wrong spark plugs.
Why does your 1995 Mazda 626 idle rough and hesitate on acceleration?
Change the spark plugs and wires... Change the spark plugs and wires...
Why would a 2002 Kia Spectra idle rough in drive?
There are several things that can cause your 2002 Kia to idle rough. The most common cause will be bad spark plugs or a bad spark plug wire.
What make the car to idle rough you changed the plugs?
When the idle goes rough, you must idle the plugs. Else the car plugs roughly.
What causes rough idle on 1995 Tahoe after changing spark plugs?
they could be bad spark plugs as in not a very good brand. or maybe you didn't put the wires back on the right spark plug.
What are symptoms of bad spark plugs?
Poor fuel miliage, rough idle, no start, poor acceleration, stalling.
What may cause a 1996 Ford Escort LX to idle rough and that has stalled a few times while reversing?
The most common cause of a 1996 Ford Escort to idle rough is bad spark plugs or bad spark plug wires. A plugged air filter will also cause it to idle rough.
What are the indications a car neds new spark plugs?
Poor performance, poor fuel mileage, hesitation, rough idle,
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.
What caused rough idle or stalling on a 1992 Pontiac grand am?
Could be in need of a tune up with spark plugs, spark plug wires, air and fuel filters.
