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Message: [QUOTE="backwoodsboy, post: 1043908, member: 5415"] No one has anything? I thought for sure someone would have seen something similar to this. In any case, I am going to replace UVCH, valve cover gasket and solder in new injector harness pigtails this weekend. Ohmed the harness' out today and everything appeared good. Did notice a trace of oil seeping through a connector at valve cover gasket. Not convinced this is my issue but if I can eliminate the possibility and do some preventative maintenance at the same time, I figure why not. While I have the valve covers off I plan on ohming out resistance in the injector solenoids, as well as remove solenoid and check clearance at the armature plate. IPR% has been increasing alarmingly fast at cold start. What was 14% IPR is now approaching 20% at ~70* EOT. IPR% drops down to its typical 10-12% once oil is at operating temps. Power has also been decreasing noticeably until oil reaches operating temp, accompanied by excessive black smoke. Truck will barely get out of it's own way under any kind of load until EOT reaches ~150*. You can audibly hear the engine chugging under load or on any type of hill, similar to retarded injection timing. [/QUOTE]

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