A faulty head gasket can be a very serious problem for the health of an engine, allowing engine coolant to leak into combustion chambers and causing hydro lock. Hydro lock occurs when engine coolant enters the combustion chamber of an engine and cannot be compressed by the upward motion of the piston, usually resulting in catastrophic engine failure.
Things You'll Need
- Complete set of U.S. and metric wrenches
- Replacement gaskets
Remove necessary parts, including the throttle linkage from the throttle body, air-conditioning compressor, alternator, power-steering pump, drive belts, intake manifold, intake manifold gasket as well as the exhaust manifold attached to the cylinder head with the faulty gasket.
Disassemble and remove the cylinder head by removing the valve cover from the top of the cylinder head with a box end wrench, then remove the rocker arms using a socket wrench and pull out the pushrods. Next, easily remove the cylinder head bolts and the head from the engine.
Place the new gasket on the engine block and place the cylinder head on top. Torque cylinder head bolts to 65 pound-feet using a torque wrench while making sure to tighten bolts in a crisscross pattern. Torque should be applied in 20 foot-pound increments to all bolts.
Reassemble engine components in reverse disassembly order, starting with the exhaust manifold. Replace all gaskets and tighten all fasteners using the torque wrench to factory specifications.
Tips & Warnings
- Label each piece's location as you remove it for reassembly.
- Make sure that the mating surfaces between the cylinder head and engine block are clean to ensure a proper seal.
Chevy Venture Heater Problems
Heating problems are a frequent repair need in some vehicles. Chevy Ventures have some history with related issues, which GM has officially...
How to Replace Head Gasket on Chevy 350 Engine
The 350 is quite possibly Chevrolet's most popular small-block engine. Although the 350 is known for its durability, this does not mean...
How to Replace Intake Manifold Gaskets on a 3.4 Chevy
The Chevy 3.4 liter engine has had a history of developing leaks in the intake manifold gaskets, causing coolant to mix with...
How to Change an Oil Pan Gasket in a 1999 Cavalier
Several things can go wrong with the oil pan in your 1999 Cavalier that can lead to the need for a replacement....
How to Replace a Head Gasket in a 5.7 Chevrolet
The 5.7-liter 350 Chevrolet engine has been installed in GM trucks, passenger cars and sport cars since 1967. If the head gasket...
How to Replace a 3.4L Intake Gasket
General Motors used the 3.4L engine on numerous popular vehicles, including the Pontiac Grand Am, Chevrolet Venture, Pontiac Montana, Chevy Malibu, Olds...
How to Replace a 1997 Chevy Cavalier Head Gasket
General Motors manufactured the 1997 Chevy Cavalier as a sporty sedan and coupe. Regardless if you have a coupe or sedan, replacing...
How to Replace the Intake Gaskets on a Chevy S10
The intake manifold on the four-cylinder Chevrolet S10 is a two-piece intake, with a gasket located between the lower and upper intake...