This is going too far:
3 weeks ago I do my intake gaskets and coolant elbows, coolant started appearing as if its boiling because its getting to hot. (Like water boiling in a stove was like my coolant resivoir) Thought it when away but 2 weeks later after a long trip i get a 'knock in the engine' We figure it was the head gasket that was getting air into the coolant but either way, engine is now garbage.
Today i replaced my engine with a used one with way less kilometeres. Take it for a few short trips and get home and can hear the coolant boiling again! Get out, pop the hood, exact same thing but not as bad because it wasnt a long trip. As the car cools down it stops bubbling.
Notes:
-The guy that owned the car before me put *tons* of sealant in the cooling system to stop the intake leak
- Brand new Thermastat
- Brand new Rad Cap
- Swapped the old coolant temp sensor to the motor i have in my car now because old one was a different style
- Heat gauge doesnt even seem to be abnormal when this happens
- Flushed the rad and heater core with hose many times to try and get old sealant out (seemed to have normal flow)
Bad coolant temp sensor?
Sealant clogging something still?
Possible two bad head gaskets in a row?
No clue what to do! Please give me any ideas
