Hi,
That's a tough question to answer. What problems are you experiencing? Does the engine use oil or has any other mechanical issues? Is this something that has just started and what symptoms are you noticing?
As far as the cam phaser is concerned, I would rather replace that than the engine. Take a look below. Those are the directions for the cam phaser. Of course, you need to remove the timing chain, but if the engine is still good (other than the phaser), I feel it would be better to replace the timing components and phasers.
Let me know.
Joe
See pics below.
Images (Click to make bigger)
Thursday, August 10th, 2023 AT 12:46 PM