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Tester came in and I started by pumping the system to 20 PSI, after 5 minutes no loss of pressure. Released pressure and started engine. after
4 minutes 150 degrees 2 PSI
6 minutes 175 degree 2 PSI
8 minutes 185 degrees 5 PSI
10 minutes 185 degrees 8 PSI
12 minutes 185 degrees 9 PSI
14 minutes 185 degrees 9 PSI
16 minutes 190 degrees 11 PSI
18 minutes 195 degrees 12 PSI
20 minutes 195 degrees 12 PSI
Gauge stayed steady during this. Engine ran at slow idle until I blipped it at 8 minutes and then it ran at 1200 RPM.
All this was done in my garage so there was no air circulation to help cool it.
Any ideas? Chas
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