RichGT350R
Well-Known Member
So if we have a good one in the right, the left is fine.. there looking for the batch of bad ones!
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TSB for Secondary Cam Chain Tensioner
- Thread starter The Chairman
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stanglife
Well-Known Member
What activates them then? I know the coyote had a retaining pin that you would remove to "activate" it. Is it like, once it sees oil pressure, it's all set?
Edit - now that I think of it, Im probably thinking of the primary tensioners.
Edit - now that I think of it, Im probably thinking of the primary tensioners.
Last edited:
mroad
Well-Known Member
Could be the cause of my engine failure. The driver side secondary chain was broken (along with followers). You can see the broken chain set aside on the red towel.
https://www.mustang6g.com/forums/threads/new-2020-gt350-hep-engine-failure.152495
https://www.mustang6g.com/forums/threads/new-2020-gt350-hep-engine-failure.152495
Chris2020GT500
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Looks goodThere it is!
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Postal Bob
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Whether it's a faulty part, or builder error, its effecting engines mainly built during the whole covid crisis and shutdown. Just wondering if that played a role in this. Both car manufacturing and parts manufacturing were shut down for several weeks, which might have led to sloppy work being done.
honeybadger
Just don't care
Well, they do a have a plastic lock when brand new. But you have to physically remove it when installing, so it’s not possible to miss it as far as I know.
To install, you push down with it turn 90*, then slide the chains over and then turn the tensioner back 90* so it’s supporting the chain. None of this can be done with the plastic lock in place as far as I’m aware. I tried because it’s a bitch to push down.
Not a 100% guarantee, but the odds are very good!So if we have a good one in the right, the left is fine.. there looking for the batch of bad ones!
Yep. You’re thinking primary.
And they’re hydraulic just like the primary ones. So if they’re not tension-ing, they’re defective.
GT350HE29
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Performed the check according to the procedure. My first observation the tensioner was in the collapsed position. Began rotating the engine per procedure, checked tensioner position every 90’ of rotation until engine had traveled the full 255’, no change in the tensioner position.
Car background.
Purchased in May of 2020, presently at 2604 miles, never tracked (yet), driven moderate to aggressive definitely over 7500 rpm on occasion. Always has ran strong with no issue, however, I noticed before a slight blip at idle, nothing concerning and very rarely occurred. Car has been a blast to drive, owning a Shelby has been a desire since the first time I saw one in 1966, plan is this car is going nowhere and to be passed down to my son (enough of that).
The Pain.
Now I must contact my local dealership.
Questions are:
Are they competent enough to go into this engine? I will have this conversation. I have used them on other occasions and have reasonable confidence in them.
If it has compression issues, almost sounds like it is practically a near complete rebuild?
Is Ford allowing dealerships to do this?
Hopefully all this works out, I have 6yr/50,000 warranty, I think I ask for more for POM?
Car background.
Purchased in May of 2020, presently at 2604 miles, never tracked (yet), driven moderate to aggressive definitely over 7500 rpm on occasion. Always has ran strong with no issue, however, I noticed before a slight blip at idle, nothing concerning and very rarely occurred. Car has been a blast to drive, owning a Shelby has been a desire since the first time I saw one in 1966, plan is this car is going nowhere and to be passed down to my son (enough of that).
The Pain.
Now I must contact my local dealership.
Questions are:
Are they competent enough to go into this engine? I will have this conversation. I have used them on other occasions and have reasonable confidence in them.
If it has compression issues, almost sounds like it is practically a near complete rebuild?
Is Ford allowing dealerships to do this?
Hopefully all this works out, I have 6yr/50,000 warranty, I think I ask for more for POM?
CJJon
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Whatever you do, don't run the motor!
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GT350HE29
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Not a chance, thanks.
CJJon
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You really have no choice but to take it to the dealer.
They won't do a major rebuild, they will replace. The tensioner issue they can fix at the dealer.
They won't do a major rebuild, they will replace. The tensioner issue they can fix at the dealer.
Threebanger
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So, maybe there never was a "bad" batch of valves? This would explain most of the Generation 2 Voodoo failures I've seen between here and FB.
