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Discussion Starter #1
I have a 05 impala base and recently i did a tune up new plugs,wires, fuel filter and air filter and oil change. i have been burning more fuel can someone tell me why the car is doin this
 

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LIFETIME HILLBILLY
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6,197 Posts

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92 Posts
Discussion Starter #7
I used to get from full to half of a tank 254 miles thats 410 km an now im getting 162miles from full to half
 

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OEM LOL
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3,804 Posts
Id check the gap on your new plugs and make sure they are correct
Also check all your wires and make sure they are on right

Check all your fluids and id anythings low post it here
 

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8th Gen Antagonist
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13,660 Posts
You should calculate your actual mileage, the gauge is not reliable enough to make any judgement from. Besides, the damn things break all the time.
 

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Mr. Handy
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6,289 Posts
Agree 254mi on a half tank (full tank is 17-18gallons) is quite high. Keep track of miles with odometer or gps. If mileage is still considerably low the cat converter or egr plugged is likely the suspect.
 
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