I’ve exhausted my knowledge with this issue, needing some help.
2003 Jcb 540-70 4cyl Perkins turbo engine only done 2000hrs
Symptom was is presurising cooling system and ejecting fluid out of expansion tank. Neither oil or coolant contaminated. I replaced the head gadget last year, cleaned both surfaces and with a straight edge appeared sound. Rad is clear and sound, water pump, thermostat sound, pipe between expansion tank and thermostat housing sound. It lasted a few months before problem returned. Limped around throughout the summer, kept revs down, it doesn’t get hot. Not smoking excessively.
Stripped head off again, had it pressure tested its come back clear, it’s now getting a light skim. Don’t really want to take the block out. I’ve also tested the oil cooler.
Is there something I am overlooking that could be the causing problem????