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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 09-16-2009
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Lower engine "tink"

Hey everyone, I used the search to check up on this, but it didn't seem like any of the previous threads covered my specific problem.

I picked up an 01 2wd about 3 months ago, and it has the 4.0 SOHC. I have the Airaid CAI and a Flowmaster exhaust (which to my knowledge should put minimal if any added strain on the engine). She has 93700 miles on her, and about a week ago when I started it up to drive to school in the morning I could hear a metal on metal "tink" coming from the engine compartment (I'm 99% positive it's not the trans from the estimated location of the sound and the smoothness of the shifting). It happens at varying RPM's, it does not happen at a specific time interval, and it doesn't happen (to my knowledge) once the truck is warm...

I've already run a complete fuel system cleaner through it, and used a can of "engine restore" which worked well on my last high mileage vehicle. The noise is still present. No power has been lost, but I'm a bit of a perfectionist when it comes to my cars. Please, any ideas will help... Thanks
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Old 09-16-2009
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Timing chains. Common issues with 01-02 4.0's.


BTW, those accesories won't add strain to the engine.
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Old 09-16-2009
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Okay, is it something I should be worried about? I understand that the timing chain can make some noise, but it doesn't seem warn to the point of retarded or advanced timing... My idea would be that I should just live with it until it gets bad enough to have to be replaced.
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Old 09-16-2009
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Well it will cost quite a bit to fix if the rear timing set is making the noise. Mine makes noise and I have just been driving it. 134000 miles and no problems with it. Mine happens when the engine is cold at around 2600 RPM.

Also they were a problem in the 03 engines as well.
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Old 09-16-2009
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Will the timing chain Tick all the time? Mine only ticks around 2300 rmps to 3200 rpms
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Old 09-16-2009
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Nope only at a certain RPM range.
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Old 09-16-2009
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Hmmm... I think it might actually be coming from the back. That means they would have to pull the engine (or close to it) if I wanted it fixed, huh? Yeah, I think I'll just drive it. My noise is only when it's cold, but I haven't really found the RPM range that it happens at. I pay close attention to it when I drive with my window down in the morning, but it almost seems to be happening randomly.
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Old 09-16-2009
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Yup. Engine would have to come out. Not worth it in my opinion. If I'm pulling the engine a newer or reman engine is going in. Hopefully I won't have to before I sell it.
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