(Another) 05 6.0l starts/dies
Ok guys, grab a beer and put you're thinking caps on! I think I got a good one here.... So I drove to work fine this morning, went to fire it up after it sat for 2hrs and it started up really rough, but ran, albeit very rough. I tried to move the truck but it wouldn't hardly move (i was on a slight incline) and was BILLOWING white/blue smoke once i got over 2k rpms, but no smoke at idle. This has never happened and other than the STC failing I've never had a no start/rough running issue. So I parked it and began going through the scangauge. After 10 min of starting it up, shutting it down and so on it completely stopped starting all together (not due to batteries) and i had to get a tow. It has an egr delete, updated STC, no CAT. My reading are all good, ficm is at 48v, ICP shoots up to 1100 while cranking, i don't believe it's related to the hpop system, I've been down that road with the STC. I unplugged the IPR still no start, cleaned the EBP sensor/tube, MAP sensor (checked for leaks) no start. The VGT sensor is working since when I unplugged it the VGT's stopped reading on the scangauge (while it was running). It did fire up once for about 20 seconds while I was testing all this stuff, puked out some white/blue smoke (not near as much as earlier in the day) ran like crap then died. Now back to no start. I have no diesel or coolant in the crankcase, It doesnt seem like an injector, I drove my old duramax almost 500 miles on 4 bad injectors and the crankcase was full of diesel. maybe an electrical problem with the injectors though? No oil in the Intercooler tube and I can't detect a boost leak anywhere. The only codes it threw were P0046 (tc/sc boost solenoid, im sure this is from when i unplugged the sensor) and P0263 (#1 cyl contribution/balance). So If anyone is still reading, I'm leaning towards a bad FICM. Can they go bad and still have accurate voltage readings? I talked with Bob at ficmrepair.com and he didn't think it sounded like an FICM, but I'm running out of options. How about standpipe/dummy plugs? would it show a low ICP reading if these were failing? Im totally stumped on this one, anyone got any ideas?
Last edited by JGI; 04-08-2013 at 08:11 PM.