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4.0L OHV & SOHC V6 Tech General discussion of 4.0L OHV and SOHC V6 Ford Ranger engines.

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Old 08-18-2012
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RANGER Down ! ! !

So heres the story i have a 02 4.Ol sohc with about 272,000 miles on it and she let me down today for the first time ever, the truck has been in my family since 17 miles on the odometer. I was climbing a hill 4th gear about 3 grand and all of a sudden huge loss power and a what sounded like a lifter knock. So i pulled over and checked all the plug wires good oil was good coolant good. Any idea of what it could be?? ?
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Old 08-18-2012
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Plus no oil anywhere it was not supposed to be and no hissing or leaking noises.
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Old 08-18-2012
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Timing chain tensioners busted?
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Old 08-19-2012
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Tensioner broke and a bank of valves kissing pistons. Id do a bank to bank compression check. Usually bank 1 will get out of time and bend the 3 intake valves. Just a guess though.
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Old 08-19-2012
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Originally Posted by 04XLTFX4 View Post
Tensioner broke and a bank of valves kissing pistons. Id do a bank to bank compression check. Usually bank 1 will get out of time and bend the 3 intake valves. Just a guess though.
This.

Timing chain decided to OD on you. Isn't too bad to replace. I'm surprised it didn't blow 100k ago.
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Old 08-19-2012
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Have you ever changed the timing chain?
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Old 08-19-2012
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I hope mine doesn't go. 131K and no rattle
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Old 08-20-2012
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Nope never changed the timing chain. Most major thing i have done to it is shimmed the transmission. and countless cv axles and wheel bearings. So i cant complain about repairs as far as miles go.
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Old 08-20-2012
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I thought someone installed a drop kit. Dang don't tease me. Sorry about your truck though.
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