p0174, p0316, p0302,
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Fleet Mechanic
Joined: May 2005
Posts: 1,567
Likes: 3
From: Chattanooga
p0174, p0316, p0302,
02 f-150. Sisters truck. 100k+ miles. Number 3 Nasty plug. 3more bad. Replaced all plugs and reset codes. Prior codes for 3 and 2 misfire. Replaced all plug wires now down to Number 2 misfire and boy she stumbles. Coil pack bad? Injector bad? Replace what? First 1000rpm system too lean p0174.
Any info would be great. It looks like there are a few common problems to other posts too. Troy
Any info would be great. It looks like there are a few common problems to other posts too. Troy
Thread Starter
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Fleet Mechanic
Joined: May 2005
Posts: 1,567
Likes: 3
From: Chattanooga
Correction its a 4.2
Number 2 is sparking outside grounded
runs better when I pull the plug and dry it off
runs ok then starts to get wet you can see the engine get rough.
Spark coils going bad?
Number 2 is sparking outside grounded
runs better when I pull the plug and dry it off
runs ok then starts to get wet you can see the engine get rough.
Spark coils going bad?
Lead Driver
Joined: Sep 2006
Posts: 7,907
Likes: 143
Sir, you have to slow down and relate what's happening in a more informative way.
We can't follow what your saying.
What is your present condition? Then we will make suggestions to try and help.
The wagon never goes where you want it to when it gets before the horse!
We can't follow what your saying.
What is your present condition? Then we will make suggestions to try and help.
The wagon never goes where you want it to when it gets before the horse!
Thread Starter
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Fleet Mechanic
Joined: May 2005
Posts: 1,567
Likes: 3
From: Chattanooga
Alright.
Replace spark plugs
Replaced wires
02-29 this morning replaced coil pack
Still stumbling but not as bad. Possible oil fouling the plug.
waiting for long distance test to burn out cylinder and see if she cleans up.
Will post findings
what I think. I think the valve seals are bad or the head is gooed up and allowing oil to pool up and not excape the head and is fouling the spark plug. Any input?
Replace spark plugs
Replaced wires
02-29 this morning replaced coil pack
Still stumbling but not as bad. Possible oil fouling the plug.
waiting for long distance test to burn out cylinder and see if she cleans up.
Will post findings
what I think. I think the valve seals are bad or the head is gooed up and allowing oil to pool up and not excape the head and is fouling the spark plug. Any input?
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