Well I finally fired my engine up today, its been a year since it was running. I orignally tore it down because I had coolant coming out of my left exhaust, and it was the no. 7 cylinder, also seen scaring on the piston wall so decided to go total rebuild. I told the machine shop their was no signs of the head looking bad and the bolt threads looked sealed also, they said they would take care of it. So I got it back a few weeks ago. The motor ran for about 1 minute today, the thing was hard to crank like it was out of timing, I double checked everthing, checked the oil again and had water in the oil. Decided to pull the no.7 plug everything fine, so I pulled the no.2 and I had water coming out of that cylinder. What do you think the chances are that that head is on the other side now? And that the machine shop did not flux it for cracks? Thanks.