After replacing the timing chain for the second time, when I press the accelerator pedal it jumps timing and starts running very rough?

2008 FORD MUSTANG
120,000 MILES • 4.6L • V8 • 2WD • MANUAL
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JETTLEE
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The car listed above is a GT. I've put timing chain in twice. It cranks perfectly idles great, as soon as I hit the gas pedal it jumps timing and starts running very rough. Idk why.
Apr 20, 2023 at 5:08 PM
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STRAILER
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It sounds like the timing chain tensioner is not working. Did you replace that as well? I and if so, did you remove the lock pin from it? Here is what I am talking about. Also, did you replace the timing chain guides as well? Please check out the images below to see what I am talking about. Let us know what happens and please upload pictures or videos of the problem so we can see what's going on.
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Apr 21, 2023 at 2:10 PM