yes it will start, however it will not run. It will quickly overheat due to loss of coolent. Running a engine with a blown head gasket will cause all types of other issues as well. Water in the oil will quickly cause damage to the main/rod bearrings and can damage all internal parts.
Sure it will start with a blown head gasket. But, if you continue to run this engine with a blown head gasket you will destroy the engine.
Cracked block or blown head gasket.
Your 1991 Ford Explorer 4.0 liter takes 5 quarts ( 4.7 liters ) of motor oil WITH FILTER CHANGE
If the motor will start and idle- let it warm up then carefully remove the radiator cap while the motor idles, if you see small bubbles coming to the surface in the radiator it is a blown head gasket. Replace gasket promptly it can do damage to the motor.
You can change a head gasket if that is all that is wrong.
Coolant mixing with the oil from a blown head gasket.
yes but if it is a blown head gasket it will make it miss and put steam and some water out the tell pipe if its not doing these things then check your anti knock sensor
The most typical reason is a blown head gasket(s).
5.0 liter motor
If the front of the engine leaks coolant there is a blown head gasket. This requires immediate repair as it can lead to a blown engine if not managed appropriately.
The only motor it came with from the factory is the 4.0 liter - OHV - V6
The 4 liter Ford engine is a V6 motor,meaning there are 6 cylinders,3 on each side of the motor.