What is a Hood Lift Support?
A hood lift support, also known as hood struts or hood shocks, is a critical component that assists in opening and holding up a vehicle’s hood securely. It eliminates the need for a manual prop rod, making it easier and safer to access the engine bay. Whether performing routine maintenance or repairs, having functional hood struts ensures a hands-free and hassle-free experience.
How Does a Hood Lift Support Work?
The hood lift support operates using a gas-charged strut mechanism:
- Gas Compression – Inside the strut, pressurized gas (typically nitrogen) provides resistance to help lift the hood.
- Hydraulic Damping – A small amount of hydraulic fluid inside the strut controls movement, preventing the hood from slamming shut.
- Support and Stability – Once fully extended, the hood shocks hold the hood in place until manually closed.
Over time, these struts lose their gas charge, causing them to weaken and fail to support the hood’s weight.
Types of Hood Lift Supports and Their Use Cases
Different vehicles and applications require specific types of hood struts based on their weight and size.
1. Standard Gas Struts
- Most common type found in sedans, SUVs, and trucks.
- Designed for factory-installed hood weights.
- Available in direct OEM replacements.
2. Heavy-Duty Hood Struts
- Used in larger vehicles, including trucks and SUVs.
- Provides extra strength for heavier aftermarket hoods.
- Ideal for reinforced hoods or vehicles with added insulation.
3. Universal Hood Shocks
- Adjustable gas-charged struts that fit multiple vehicle types.
- Used in custom applications such as modified engine bays or aftermarket hoods.
- Available in different pressure ratings for customized lifting power.
Common Causes of Hood Lift Support Failure
Several factors contribute to hood strut failure, including:
- Gas Leakage – Over time, the nitrogen gas inside the strut escapes, reducing lifting capability.
- Hydraulic Fluid Loss – If the fluid inside leaks, the struts lose their ability to dampen motion.
- Wear and Tear – Daily use and exposure to temperature changes weaken the seals and internal components.
- Rust and Corrosion – Moisture exposure can corrode metal parts, making the strut less effective.
- Excessive Force or Impact – Rough handling, slamming the hood shut, or using incorrect struts can cause premature failure.
When Should You Replace Your Hood Lift Support?
A failing hood strut can lead to an unsafe situation, as the hood may not stay open. Consider replacing the hood shocks if you experience:
- Difficulty Opening the Hood – Struts no longer provide enough force to lift the hood easily.
- Hood Doesn’t Stay Open – The hood slowly drops or slams shut unexpectedly.
- Visible Damage or Leaks – Signs of oil leakage or rust on the struts.
- Weak or No Resistance – Struts feel weak or completely fail to support the hood.
Most hood lift supports last between 5-7 years, but regular inspections help catch failures early.
DIY Hood Lift Support Replacement Guide
Replacing hood struts is a simple DIY task that requires minimal tools and takes only a few minutes. Follow these steps for a safe and effective replacement.
Tools and Materials Needed:
- New hood lift supports (OEM or aftermarket replacements)
- Flathead screwdriver (for removing retaining clips)
- Gloves and safety glasses
- Shop towels (to clean mounting points)
- Partner or Prop Rod (to hold the hood open during replacement)
Step-by-Step Instructions:
- Secure the Hood – Use a prop rod or ask a helper to hold the hood open.
- Locate the Hood Struts – Identify the mounting points where the struts connect to the hood and fender.
- Remove the Old Struts:
- Use a flathead screwdriver to release the retaining clips at both ends of the strut.
- Gently pull the strut away from the ball socket.
- Install the New Hood Lift Support:
- Snap the new strut onto the ball sockets without removing the clips.
- Ensure a secure fit by pressing firmly into place.
- Test the Hood Operation – Open and close the hood several times to ensure smooth functionality.
- Check for Proper Installation – Make sure the hood remains fully open without dropping.
Additional Parts and Consumables Needed
When replacing hood struts, consider checking or replacing these related components:
- Hood Hinges – Ensure smooth operation without binding or stiffness.
- Ball Studs and Retaining Clips – If worn, replace for a secure fit.
- Rust Inhibitor Spray – Prevents corrosion at mounting points.
- Thread Locker – Helps secure mounting bolts if needed.
Final Thoughts
A properly functioning hood lift support ensures safe and easy access to your engine bay. Regular inspection and timely hood strut replacement can prevent accidents and frustration. Whether you drive a sedan, truck, or SUV, understanding how hood shocks work and when to replace them can save time and effort.
By following this DIY hood strut replacement guide, you can restore the functionality of your hood quickly and affordably. If your hood struts are failing, don’t wait—replace them today for a safer and more convenient driving experience.
