OK, i think i'm having a problem with my 60,000 mile 01 LB7 and i need advice. Rewind 3 1/2 months, i had injectors going out. I take the truck in for a set of new Exergy 30 overs. When doing the injectors the shop finds that 4 of my valves are cracked where they meet the bridge. The heads come off for the valve job and go back on with Grade C Gaskets and ARP studs. The truck has been running really good ever since. About 2 weeks ago i rolled into it from a roll and the truck hesitated and made a funny noise almost like a miss for just a brief second and then takes off. I didn't think anything else of it at the time because all seemed fine after. However in the last few weeks i have been noticing more black smoke under light throttle but not enough to worry about. Yesterday I had my truck backed up to my garage to load the bed and i noticed my garage filling with white haze. It was light enough that you couldn't see it in the sunlight but could in the garage. When i pulled out you could see a light cloud of white smoke come off. When i get back home i check my balance rates and #7 was checking 4.7. I changed my fuel filter even though my old one only had 3,000 miles on it. When i dumped the fuel out of my old filter it looked like a considerable amount of particulate came out of the filter. I checked the balance rate again and it was 3.7 and the smoke was gone. This morning the smoke is still gone but i checked the balance rate when i got to work and it was 5.4. I added some injector cleaner to my tank, hoping it is just contaminated fuel. My air filter is clean (not oiled), I cleaned my MAF with MAF cleaner on Sunday, I am making enough boost to max out my factory sensor and the truck runs good, I have no codes, New Fuel Filter, and i am holding 22.8K on my big tune. What are everybody's thoughts?
