4.0L SOHC Engine Problem
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Joined: Aug 2009
Posts: 18
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4.0L SOHC Engine Problem
I have a 04 Explorer sporttrack 4.0L V6 SOHC. While driving the other night the engine started to run rough so I got it home as quick as possible. I had trouble codes telling me the #5 cylinder wasn't firing and I tested and had almost no compression. I took off the valve cover and discovered that the exhaust roller rocker on #5 cylinder had come off as well as it's lash adjuster had come out. After looking at the roller rocker I discovered it had way too much play in the bearing so I replaced it and the lash adjuster.
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After reassembly I had some ticking noises so I did and engine flush and then did an oil and filter change. I ran the vehicle for twenty minutes or so and with no more ticking I shut it off. After letting the vehicle cool off for a couple of hours I tried starting it again and then it felt like two cylinders weren’t firing. I would take off the valve cover again but it is pouring outside now.
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Any ideas what could be wrong?
<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com
fficeffice" /><o></o>After reassembly I had some ticking noises so I did and engine flush and then did an oil and filter change. I ran the vehicle for twenty minutes or so and with no more ticking I shut it off. After letting the vehicle cool off for a couple of hours I tried starting it again and then it felt like two cylinders weren’t firing. I would take off the valve cover again but it is pouring outside now.
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></o>Any ideas what could be wrong?
Tuned
Joined: Aug 2007
Posts: 321
Likes: 1
From: Tulsa, Oklahoma
I've not had much luck getting help on this "Explorer" forum in the past but hope you do.
My 93 Sport Trac is running rough and the diagnostic show #6 injector to be bad, so we change it out and no change at all .
I will keep an eye on this and maybe I can get help also on my 4.0 SOHC
My 93 Sport Trac is running rough and the diagnostic show #6 injector to be bad, so we change it out and no change at all .
I will keep an eye on this and maybe I can get help also on my 4.0 SOHC
Logistics Pro
Joined: Jun 2009
Posts: 4,808
Likes: 83
From: Cedar Rapids, IA
Did you need to take off a few plug wires to get the valve cover off, or does your 2004 use CoP ignition? If you pulled plug wires, maybe a couple of them didn't get seated properly.
-Rod
-Rod
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