Hey guys,
Saturday morning, my buddy's 04 C4500 Rollback started puffing white smoke and running with a miss on the way to work. Initial thoughts were injector perhaps, as we finally got a p0302, cylinder #2 misfire. I checked the balance rates with his predator and my laptop, and in D, with the brake on, injectors were all around -6, except #2 was 15. Figured it was an injector, so he got one today as he depends on this truck for his repair business. Replaced the injector, and it is running the same, same code, lots of white smoke, same miss.
He told me today that about 20,000 miles ago, (truck has about 65k total) he had the head gasket on the drivers side replaced by GM under warranty. His fear is now that the block is warped, and it's never seated right since the repair, and wont' seat right until it's decked. Would a head gasket blow bad enough to do this? Any thoughts? I won't be back that way until Thursday night, but he's looking at getting another engine, so he can run the truck until his gets to the machine shop, and then keep it for a spare.
He has a predator on it for about 50k miles, mostly on 85 or 65hp settings.
I appreciate any advice.
Will let you know tonight. Pulled engine yesterday.
