I was changing my o-rings and I didn't have a torque wrench so I overtightened the valves and cracked the block because it's aluminum. I tried to jb weld it but the jb weld didn't hold; I thought about welding it but I could run into problems with leaking inside the pump -inner crack. So I'm on ebay... there's a non turbo pump for 450 and a turbo pump for 150 that's in better condition. I wonder if my fuel mileage would suffer from 30 mpg, but at this point I'm not sure I care, as long as it runs lol. Hopefully the black smoke won't be too much. I was worried that the extra heat (what I read online) from the extra diesel burning would add damage to the internal engine.