Changing #4 Spark Plug in a 4.0
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New User
Joined: Feb 2004
Posts: 16
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From: Huntington Beach
Changing #4 Spark Plug in a 4.0
I can't believe how hard it is to get to the #4 spark plug! It appears to be neccessary to take off the power steering and AC pump. Since I need a new serpintine belt anyway, I am going to have it done in a shop tomorrow. Is this something I should go to the dealer for or can any competent mechanic handle it? My check engine light is on and the code says P1034 - Cylender #4 misfire detected.
Mountain Pass
Joined: Nov 2003
Posts: 176
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Hi,
I just changed all my plugs in my 95 Ranger 4.0L the other day. I'm just looking at my Haynes manual which lists the #4 cylinder as being the forward-most cylinder on the drives side of the truck. I can honestly say that I had no trouble changing the plugs off, and based on that, I would say that most anyone could do it. The hardest one for me was actually the back one on the drivers side (#6), I found that the EGR tubing was really in the way. When I changed mine off, all I brought out to the truck was a ratchet, a spark plug socket, an extension and a universal joint. Space is really tight in some spots, especially for someone my size, but I found that I could work around it by just sliding the spark plug socket onto the plug, then attaching the necessary extension or ratchet from there. I didn't have to remove any pumps or accessories. This was especially necessary on the passenger side of the engine with all the heater and a/c hoses.
Believe me, it can be done, just try different combinations of extensions/u-joints/ratchets etc.
Your trouble code may be caused by bad coil pack or wires as well. Be sure to use "double platinum" plugs. You won't be dissapointed.
Good luck.
Ron
I just changed all my plugs in my 95 Ranger 4.0L the other day. I'm just looking at my Haynes manual which lists the #4 cylinder as being the forward-most cylinder on the drives side of the truck. I can honestly say that I had no trouble changing the plugs off, and based on that, I would say that most anyone could do it. The hardest one for me was actually the back one on the drivers side (#6), I found that the EGR tubing was really in the way. When I changed mine off, all I brought out to the truck was a ratchet, a spark plug socket, an extension and a universal joint. Space is really tight in some spots, especially for someone my size, but I found that I could work around it by just sliding the spark plug socket onto the plug, then attaching the necessary extension or ratchet from there. I didn't have to remove any pumps or accessories. This was especially necessary on the passenger side of the engine with all the heater and a/c hoses.
Believe me, it can be done, just try different combinations of extensions/u-joints/ratchets etc.
Your trouble code may be caused by bad coil pack or wires as well. Be sure to use "double platinum" plugs. You won't be dissapointed.
Good luck.
Ron
Post Fiend
Joined: Jan 2003
Posts: 9,748
Likes: 16
From: Connecticut
Good advice given by Ron. That #4 plug is a toughie, but it's doable.
FWIW, some people have resorted to taking off the tire and removing the splash guard and going at the plugs from that angle.
FWIW, some people have resorted to taking off the tire and removing the splash guard and going at the plugs from that angle.
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