try replacing your coolant temp/sensor $5.00
start by popping the bonnet
Good chance you have a bad head gasket or a cracked head.
Typically a single pop followed by some hissing. If you continue driving there may be popping or knocking noises as you ruin the engine.
Somehow there is cylinder pressure or radiator pressure getting into the crankcase. There is a problem. Take it to a repair shop ASAP.
It's a stupid little plastic plug that can be stripped very easily. Take it to a rad shop and have them replace it.
Try oiling the hinges on the door. Replace the check strap. That is the part between the two hinges.
Popping back, also known as backfiring.
Could be that the metal pipe that the hose is going on to is out of shape or damaged thro corrosion, your hose clip might need changing ( the device you tighten around the hose ) or something is defective in the Radiator Cap, you may need a new cap or, you have a serious Blockage in your Radiator. if you can't find the problem, you better take your car to a service centre to a Mechanic, before you Cook your engine, then you will be up for serious $$$$$.
Popping tags means that you go shopping and buy clothes. They call it popping tags because you "pop" the tag off after you buy it.
There here is no evidence that popping you knucles does any particular harm.
The program "Fairly Odd Parents" has eye popping magic in it.
No, 'popping' is not an onomatopoeia. However, just the word "pop" is regarded as an onomatopoeia.