Gas Guzzler

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Jun 16, 2004 | 06:22 PM

DRP

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From: Heart of Dixie

Gas Guzzler

Major problem here. I have a 97 4.6L 4x4, and I am getting about 8 mpg, on a good day. This sucks. I have a misfire on cylinder #1, and I know that has some part to do with it, but I wouldn't think that would cut my gas mileage in half! I am in fact a high school student, so my driving habits are more agressive than normal drivers, but my friend who drives more agressive than me still gets around 14 city. I got my air filter changed along with my oil last week. Somebody please help me.

Jun 16, 2004 | 06:26 PM

LxMan1

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From: Louisville,Ky.

It needs a tune up!!! New Motorcraft Double Platinum plugs and Motorcraft wires. Also, you might want to change the PCV valve and clean the MAF.

Jun 16, 2004 | 07:01 PM

DRP

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From: Heart of Dixie

The reason for the cylinder misfire is from the ignition system getting wet. The coil on #1 is bad and it needs a changin. But will i have to only change that one, or should i change all 8 to get all cylinders on the same level. btw - i belive the coils, spark plugs, and wires are all original and have been around for the trucks entire 116k mile long life.

Jun 16, 2004 | 07:15 PM

LxMan1

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From: Louisville,Ky.

It should have 2 coil packs not 8 coils. If it is a bad coil pack, just replace the bad one.
Put in new plugs and wires too and I bet it will run a lot better and get much better mileage.

Jun 16, 2004 | 08:15 PM

DRP

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From: Heart of Dixie

Now I've got another question. How on earth do i replace the spark plugs?? I'd be pretty sure that there is another thread on it somewhere in FTE, so a just a link to the thread would be fine.