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Message: [QUOTE="isootmypants, post: 403139, member: 1060"] Well.... On Friday, was getting the truck ready for the Buck. Loaded new tunes, took for a ride, running awesome. Pull in garage, check fluids over, start up, back out of garage, CLACK CLACK CLACK, SES light on. Heart drops. Pull inside, shut off. Pull driver side valve cover. Find this: [ATTACH=full]92274[/ATTACH] [ATTACH=full]92275[/ATTACH] [ATTACH=full]92276[/ATTACH] [ATTACH=full]92277[/ATTACH] Both rocker are retainers snapped, same cylinder, exact same time. Luckily found all pieces in the head, nothing dropped down. Push rods laying there, rollers all good. Run over to my buddy Jims place in Vernon, was able to snag parts from him, got back, put it back together. Start it up. CLACK CLACK CLACK. White smoke at idle. Put AE on, said Cylinder #6 injector balance failure, did the buzz test, etc. Let truck idle, unplugged #6 injector, stopped smoking, OK. Pulled injector, checked it, looked perfect. Swapped over injector 4 & 6. Started up, unplugged injector 6 that was in #4 now, still smokes, ok not injector, unplugged injector 4, that was in hole 6, stops smoking. Ok, thats that, only thing it can be is a bent rod. Injector putting fuel in cylinder, not coming up high enough to ignite fuel, so only raw fuel coming out. Pulled motor in 2 1/2 hours, head off, find #6 piston, 1/4" shorter on TDC. FACK! Flip motor, pull pan, found the knock. Piston to crank contact. [ATTACH=full]92278[/ATTACH] [ATTACH=full]92279[/ATTACH] [ATTACH=full]92280[/ATTACH] [ATTACH=full]92281[/ATTACH] [ATTACH=full]92282[/ATTACH] [ATTACH=full]92283[/ATTACH] [ATTACH=full]92284[/ATTACH] Slight score in cylinder wall, doesnt go past ring mark. Now Im stumped on what to do. Save for Billet rods, or replace one piston and rod. Cryo'd forged. .20 over piston with 15.5 comp, radiused and delipped. Im not sure what caused the retainers to break, and if that is what caused the rod to bend, valves slamming shut during exhaust stroke, or what. But I am damn lucky it bent and did not install windows in my block. [/QUOTE]