'10 4.0 Timing Chain Tensioner Install

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thehof2012

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Going to swap out the tensioners as preventative maintenance (94k) on my Sport Trac. Seeing mixed views on if the timing chain tensioners "need" to be primed prior to install.

Thoughts?

It sounds like it'll be easier to install them if they aren't full of oil and making more pressure as I push them in and install, but I also want them to work properly once installed... so... is it needed or not?
 

Ed Fenwick

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I would think that once the engine starts, the tensioners become full. That said, everyone says to fill them. When I have paid others to install them, I ask and they say they did fill with oil.
Ed
 

EddieS'04

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You can unplug the coil or fuel pump fuse. Turn the motor over and let the oil pressure build up..
 

DILLARD000

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I prime them full then press out 3/4 of the oil in the vice before install. Makes them easier to get threaded straight in the heads. Then precrank the engine with gas pedal to floor to refill them before starting engine.
 

RodMac

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I suggest going with Ford OEM tensioner. I used Autozone and the another brand and the rattle came back less then 5k miles on both. Someone on the site said don’t use non-OEM. Which I then installed and the motor sounds great 30k miles now.
 

thehof2012

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I suggest going with Ford OEM tensioner. I used Autozone and the another brand and the rattle came back less then 5k miles on both. Someone on the site said don’t use non-OEM. Which I then installed and the motor sounds great 30k miles now.
Yeah I'm in the same boat. I purchased Rock Auto ones... they came in... "Made in China" right on the box :( I thought they were Cloyes branded and built in AR, but not the case. SO, I'm in the market for some OEM tensioners, hopefully @Todd Z is able to help but it's not an immediate "need" for me at this point, just preventative.

I don't dare put the Rock Auto ones in it, I don't have problems (yet.. knock on wood) nor do I want to start problems!
 

DILLARD000

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Search links for OEM parts+prices:
1997~2011 V6~4.0L~SOHC Left (with "TopHat") TimingTensioner xu2z-6k254-aa\6L2z-6k254-b\7u3z-6k254-b
1997~2011 V6~4.0L~SOHC Rght (wOut "TopHat") TimingTensioner xu3z-6k254-ba\6L2z-6k254-a\7u3z-6k254-a
1997~2011 V6~4.0L~SOHC Gasket\Seal\Washer for above Tensioners (2 required) xu2z-6m252-aa

2001.Ford.ExST_Engi.Tmng_Left.Tens_Ford.xu2z-6k254-aa_1of3.GIF
2001.Ford.ExST_Engi.Tmng_Rght.Tens_Ford.xu3z-6k254-ba_1of3.GIF


Click here for more info.
 
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