middlecalf
SILVER Star
Anyone ever have an F135‘s radiator overflow tank overflow without any sign of overheating? Radiator top and thermostat housing measure ~100-deg while water pump and lower radiator hose measure ~150 to 170-deg. Head on spark plug side measures ~120-deg around #1 and ~165-deg around #6. Temperature sender mount measures ~155-deg. (IR temp measurements). Perplexed where the pressure is coming from to open cap and fill up/overflow the overflow tank. Also, coolant doesn’t return when motor cools down. New issue, problem just started.
As simple as a bad radiator cap, or something more?
As simple as a bad radiator cap, or something more?
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