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Timing guides weak

Old Sep 18, 2025 | 06:11 AM
  #1  
Trucker_Kevin's Avatar
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Joined: September 13, 2025
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From: Southern Illinois
Timing guides weak

Hey all

i bought the 2010 model with the 4.0, and I read that the timing chain guides are the Achilles heel in these engines. I am not surprised as this is nothing new. For some reason these manufacturers continue to use nylon and plastic parts even knowing that they are a ticking time bomb. Well actually I know the reason it’s all money.

I have 130K on mine and it runs good and has no noise, but it seems as when and not if these guides give out the engine must be pulled to replace the chains, but my question is, would it be possible to be proactive and replace just the guides with the engine still in before they give up? Has anyone done this? I have tried to do some research but there seems to be no information on replacing just a guide

I would much rather spend a day replacing a weak component verses seeking a replacement engine in the boneyard
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Old Sep 18, 2025 | 07:18 AM
  #2  
Bert's Avatar
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Joined: January 25, 2010
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From: Massachusetts
I think it's a good idea to replace them before they fail and cause major problems .... and I am not sure, but I think the lay-out of that engine requires that you pull the engine to replace them whether they have failed or not
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Old Sep 18, 2025 | 08:38 AM
  #3  
05stangkc's Avatar
Administrator clevparts@aol.com
 
Joined: November 27, 2004
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From: Visalia Ca.
The 2010 Being The One Year Wonder Often Has Issues Which You Can Find Answers in the 2005-2009 Section in Regards To The 4.0 Engine. Might Gleen Some Info Here!

https://themustangsource.com/forums/...8/#post7084849

Kc
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Old Sep 18, 2025 | 12:25 PM
  #4  
Trucker_Kevin's Avatar
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Joined: September 13, 2025
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From: Southern Illinois
Well if the engine needs to be pulled then I may as well just find a core in the junkyard and rebuild it and have it ready as a spare. Since I plan on keeping the car. Sounds extreme but I like doing stuff like this. If anyone k owns a definite answer though feel free to chime in, I’d rather just replace the guide now as an ounce of prevention
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Old Sep 18, 2025 | 12:34 PM
  #5  
05stangkc's Avatar
Administrator clevparts@aol.com
 
Joined: November 27, 2004
Posts: 12,515
Likes: 4,278
From: Visalia Ca.
I Would Contact This Guy as It Seems He is The 4.0 Guru!


KC

https://www.youtube.com/@iamdjnam

https://www.facebook.com/groups/4.0sohc
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