what's that sound?

First start it up and run it at high idle where you can hear the noise and crack each injector line one at a time to see if the noise goes away. A bad injector nozzle can cause a knock just like a rod bearing.

Looks to me like you've been running on 3 cylinders....no fire in that one hole.
I'd guess one of the remaining cylinders is acting up so your down to 2+ and no power.
Do the injector check, swap around to verify cylinder operation and then determine if the head needs to come off.
If you have bad valves you should be hearing the engine spit out the exhaust or at the intake.

OM and JMV have pretty well pin pointed the miss and by the manifold color it looks like the #1 is the culprit.As was suggested switch the #1 with #4 and see if the miss follows.I have found dozens and dozens of them that were not firing and many times if your dealer or an injection shop is near with a tester have them pump it out and many times will clear them out of the debree and will work again. Maybe as long as it,s gone you may need a new one or a good used one. If you advertise for one get the number off the old nozzle and go by that unless someone else had put the wrong one in sometime.

thanks guys I will see if I can get it into the shop latter this week and I'll let you know what I find. At least I might be barking up the right tree now.😛