I have 1993 GMC conversion van, V-8. It was heating up so I put in a new thermostat and it ran for three days without any problem. After that it acted up again. The hose from the radiator to the engine popped off from pressure build up. I took it in for diagnosis and the guy told me it has a leakage from the intake. Is that correct?
Optional Information:
1993
GMC Vandura 4.0
Already Tried:
Changed a thermostat and put in new antifreeze