I finally got the pressure tester. Well, I pumped the system up with 15psi. After five minutes it lost a 1/2psi. Next I performed a combustion leak test. As soon as I started the car it read 3psi. Five minutes later it was at 5psi. 15 minutes later it was at 16psi and close to overheating. I also had no heat while I performed the test. Next, I let the engine cool off and I removed the belt from the water pump. I performed the test again and it had the same results. What does this mean?
