Yes indeed a good shot. I love my Canon DSLR but its really the lens that makes all the difference!
Its a shot of the top deck of an EMD 16 645 diesel burning MDO. The watchkeeper noticed a drop in exhaust temperature, but he was very persistent and notice the wiring for the pyrometer was not connected properly, and did not identified the proper cylinder. The low temperature had been investigated and found normal for the labeled for the cylinder, so we were just going to change the pyrometer... but as it turns out there the instrument was reading right and there was an obvious problem visible right away once investigated. The engine had just been rebuilt, so whether the very small retaining clip was forgotten or just fell off, the clevis pin fell out. It connects the unit injector to the rack.
The clip was found, and replaced. Unit was again producing power. A simple fix with a quick conclusion. Gotta love that !
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