I have an 05 mustang gt. started to have slight hesitation or misfire followed by the car knocking. Thought it was phasers so I replaced both sides. Car still starts to knock under load only after he car is warm at running temp. I can either rev or shut car off then back on immediately and the knock goes away. Second I take off the knock is back. Sounds identical to phaser knock. Has good oil pressure to. Any ideas?? Timing chain guides tensioners?? I'm stumped