I’m learning, bear with me.
So my truck likes to puke to a level that is below the top row of tubes. Sounds like I might be taking on air somewhere in the system. For what it’s worth I do have a 1/8 inch hole drilled in the thermostat. I understand now that might not be a bullet proof solution if the system is sucking air elsewhere.
It’s easy enough to replace the cap and check that off the list. Is it possible that small air leaks (that don’t produce visible leaks) could also contribute to the problem?
For instance, I know that my heater core has some sort of small leak. It can’t be more than a pinhole. I can smell it if the fan is turned on but have yet to find any moisture. Would it be with bypassing the heater core while I’m replacing the rad cap? I suppose it would also be good to tighten all hoses?
