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Old 08-06-2007, 12:20 PM   #1
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Default 99 F150 4.2 V6 poor gas mileage

Hi there, my truck gets poor gas mileage it is about 13mpg. I was thinking a V6 should get at least 17mpg. It has new plugs, wires, air filter, new gas filter, standard tires runs well & no codes. It is a F150 Reg. Cab, long bed, V6 4.2L, Auto.

Can anyone help me?

Thank you, Mike
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Old 08-06-2007, 01:32 PM   #2
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cai, and exhaust i think helps with mpg



or upgrade to the 4.6 ive been told by several people that the best motor mpg wise in a truck is the smaller v8
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Old 08-06-2007, 08:34 PM   #3
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your problem is that you have a big truck with a little motor....
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Old 08-10-2007, 01:36 AM   #4
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I'm in the same boat as you, but mines a supercab. Takes alot of oommpph to move a full size truck. Quit checking your mileage, you'll only be disappointed.
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Old 08-10-2007, 08:20 PM   #5
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Default 99 F150

Thanks for taking the time for your replies.

Mike
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Old 08-14-2007, 04:45 AM   #6
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Mike, that does sound a bit low. I get 12-17mpg outta my 2002 5.4l with 147k miles on it. Have you checked the air filter and/or fuel filter?

Also, how do you drive? Heavy on the pedal?
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Old 08-14-2007, 10:37 AM   #7
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Default 99 F150 poor mpg

Hi there, New Air Filter & Gas Filter. I drive pretty mellow not heavy on the pedal at all.

Thanks F150Dan.

Mike.
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Old 08-14-2007, 10:49 AM   #8
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Quote:
Originally Posted by 92custom View Post
cai, and exhaust i think helps with mpg



or upgrade to the 4.6 ive been told by several people that the best motor mpg wise in a truck is the smaller v8

Dont recommend "upgrading" if you havent performed an engine swap.
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Old 01-10-2009, 08:37 AM   #9
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I have a 2003 F150 supercrew with the 4.6 and generally get 16.5 to 17 mpg, but since the cold has hit it appears to have dropped to around 13.5, I wouldn't think
it would drop that much even with running a bit richer during the extended warmup.
Thinking of going with a K&N air filter.
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Old 01-10-2009, 08:48 AM   #10
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Default Bad gas mileage

Quote:
Originally Posted by Standish211 View Post
Hi there, my truck gets poor gas mileage it is about 13mpg. I was thinking a V6 should get at least 17mpg. It has new plugs, wires, air filter, new gas filter, standard tires runs well & no codes. It is a F150 Reg. Cab, long bed, V6 4.2L, Auto.

Can anyone help me?

Thank you, Mike
I have a 2003 supercrew (4.6 2wd)that generally gets 17 but with the cold weather it has dropped to around 13.5.
I'm looking at a K&N air filter for everyday driving.
Anyone else having poor cold weather mileage?
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Old 01-10-2009, 08:48 AM
 
 
 
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