Coolant Loss 1989
#1
Coolant Loss 1989
Changed water pump, Ford thermostat and radiator cap now I'm losing coolant. Pressure tested cooling system and found new cap was bad. While I had the system pressurized for about 2 hours I removed glow plugs and cranked engine to see if water blew out and it didn't. No oil in water and no water in oil / a puff of white smoke at start up and maybe a puff now and then under heavy acceleration. Replaced with a good cap and still having coolant loss of about 1/2 gal per day ( it only takes about 10 miles to do this). Truck has 240,000 or so miles and I have owned it since new. Used antifreeze additives once I heard of cavitation. Runs strong and uses very little oil. What do I check next?
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