Hi Chuck,

Thanks for your reply.

I did check to see if the chain had jumped.....with the cam marks aligned on the passenger side cam shaft, I was seeing about 2-3 degrees to the right of zero. Also, as I mentioned previously, the compression ranges from 169-175 in all 8 cylinders.

Also, is there a thread somewhere that describes the procedure to replace timing chain, tensioner, & all guides/rails ?

Thanks,

Brian