Hi guys and gals. I was wondering if HZJ 73, HZ1 engine is prone to head gasket failure? I recently pulled my tent trailer over some steep roads over to Tye on Kootenay lake. I was watching my temp gauge and everything was fine then the temp went a little above half. when I got to the summit and started down hill it was smoking which wasn't normal. Then it seemed to go away and I noticed it was low on power. I checked the coolant no sign of higher pressure and no oil. I checked the oil and no water in it. I ran some Lubromoly though the tank with the next fuel fill up. I am buying a compression leak down tester from Lordco. I was wondering what normal compression is at 154000 km.
Compression pressure:
IPZ and 1HZ
37.0 kg/cm2 (526 psi, 3,628 kPa) or more
1HD-T
35.0 kg/cm2 (498 psi, 3,432 kPa) or more
Minimum pressure:
IPZ and 1HZ
27.0 kg/cm2 (384 psi, 2,648 kPa) or more
1HD-T
25.0 kg/cm2 (356 psi, 2,452 kpa) or more
Difference between each cylinder:
5.0 kg/cm2 (71 psi, 490 kPa) or less
This is out of my manual. Any help would be great. Cheers
Compression pressure:
IPZ and 1HZ
37.0 kg/cm2 (526 psi, 3,628 kPa) or more
1HD-T
35.0 kg/cm2 (498 psi, 3,432 kPa) or more
Minimum pressure:
IPZ and 1HZ
27.0 kg/cm2 (384 psi, 2,648 kPa) or more
1HD-T
25.0 kg/cm2 (356 psi, 2,452 kpa) or more
Difference between each cylinder:
5.0 kg/cm2 (71 psi, 490 kPa) or less
This is out of my manual. Any help would be great. Cheers