You will need to do either a cylinder leak down test or a compression test.
Either a blown head gasket or a cracked block possibly
Blown head gasket - Warped or cracked head - cracked block.
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.
What is your 1996 Chevy blazer LS with a blown motor worth?".
Cracked block or blown head gasket.
Blown head gasket, cracked head or cracked block. Busted head gasket; cracked cylinder head; broken piston; or bad oil pan gasket if driving thru high water.
the local shop wanted $1400. DIY cost me about $700 for gasket set and having heads checked.
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.
Timing not set properly, carbon deposits in the combustion chamber, cracked head, blown head gasket, overheating.
no gasket is used
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