missfire

2006 SATURN ION
162,000 MILES • 2.2L • 4 CYL • FWD • AUTOMATIC
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JOE1953
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sometime when start engine it miss at idle llike a spark plug is bad. what type of spark plugs this engine call for? I think I need a tuneup.
Mar 30, 2016 at 9:44 AM
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SATURNTECH9
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It takes double platinum plugs you could also have a vacuum leak.The plugs get changed every 100,000 miles.how long since your last plug change?
Mar 30, 2016 at 1:01 PM
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JOE1953
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I change the plugs July 11, 2014
Mar 30, 2016 at 3:23 PM
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JOE1953
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I change the plugs July 11, 2014
Mar 30, 2016 at 6:53 PM
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SATURNTECH9
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So most likely you haven't driven 100,000 miles since then?did you use double platinum plugs when you changed them last time?
Mar 30, 2016 at 7:25 PM
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JOE1953
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I don't think I use double platinum plugs the last time.
Mar 30, 2016 at 10:35 PM
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SATURNTECH9
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Did you use copper plugs?
Mar 30, 2016 at 11:12 PM
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JOE1953
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I am not sure what type of plug I use but I think they was autolite plugs they costs like $2.99 per pug. but I am not getting the good gas mileage that I got in the pass will the spark plugs cause the gas mileage to drop?
Mar 31, 2016 at 12:35 PM
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SATURNTECH9
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For 2.99 a plug I doubt you got double platinum plugs.They can a lot of things effect gas mileage though.Remove a plug and see how they look and how they look.
Mar 31, 2016 at 12:47 PM
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JOE1953
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what is some of the thing that can cause a engine to burn more gas?
Apr 1, 2016 at 9:45 AM
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STRAILER
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A vacuum leak like saturntech9 suggested would hurt gas mileage, also check the air in the tires, here is a guide on how to check for a vacuum leak.

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge



Apr 4, 2016 at 2:21 PM
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JOE1953
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how much air to put in the tires will the amount or number be on the tires?
Apr 8, 2016 at 10:44 PM
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SATURNTECH9
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No the number on the tires is maximum inflation newer cars on the drivers door or drivers door label there is a tire pressure label.Your car gets 30psi front and rear.
Apr 9, 2016 at 7:31 AM