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Well, just for future Forum-Searchers reference ... I discovered it was my compression gauge. I tested my Mustang and got the same results ... but I knew it was good. Sooo ... after hearing and feeling no resistance, I crossed the fingers and cranked her up. Purrs just fine!

Cranked it over with the starter power ... not running. I have timed numerous vehicles before and I just have an extremely difficult time believing its impossible to time without those tools ... which do nothing but hold the cam and crank in position. As long as they are lined up exactly as the...

So I replaced the chains and guides ... and according to the guides I found, I lined up the camshaft markings parallel to the head surface with it going below the cam-center. Crankshaft is at TDC according to the pin (under timing cover) as well as the sensor marking AND a hanger inserted...

Delete this thread. This was a user error and I clearly have the timing wrong. Glad I did a compression test before trying to drive it!

120,000 miles. Seem to be running fine ... but bothe the traction and other side guides are clearly broken. 90% in-tact .. but snapped off from the bottom pivot point.

I've seen all the nightmare stories online about the 4.0 SOHC timing system. The engine wasn't making any significant noise but when I pulled the valve covers off for some other maintenance I noticed the REAR (passenger side) chain guides are broken. I hardly feel like yanking the engine...