Hood Lift Support Replacement: DIY Install Guide

Hood lift supports, also called hood struts or hood props, wear out over time and lose their ability to hold the hood open safely. This is a beginner-to-intermediate repair that typically takes 30–45 minutes and requires only basic hand tools. The steps below are general guidance; specific fastener types, torque specifications, and procedural details vary significantly by vehicle make, model, and generation. Before starting any work, consult your vehicle's service manual to identify the correct torque specs, fastener sizes, and any vehicle-specific variations that may apply to your repair.

What You'll Need

Tools

• Socket set and ratchet — for removing and installing fasteners
• Torque wrench — to tighten fasteners to manufacturer specifications
• Jack and jack stands — to safely lift and support the vehicle if required for access
• Screwdrivers (flathead and Phillips) — for prying or removing clips and trim
• Work gloves — for protection and grip while handling struts and fasteners
• Safety glasses — to protect your eyes from dust and debris

Parts & Materials

• Replacement hood lift support struts — verify that the stroke length and pressure rating match your vehicle's original equipment specifications
• Replacement fasteners (bolts, clips, or retaining pins) if the originals are damaged or corroded during removal
• Silicone-based lubricant or assembly grease — to apply to fastener pins and end fittings for smooth operation
• Work gloves and eye protection — for personal safety during the entire repair

Before You Begin

• Park your vehicle on a level, stable surface, engage the parking brake, and use wheel chocks or wedges for additional safety. Open the hood fully and either use a padded hood prop rod or have a helper support it; never work under the hood without a secure support in case the struts fail and the hood closes unexpectedly.
• Consult your vehicle's service manual before starting work to identify the correct torque specifications for fasteners, the exact fastener types used on your vehicle, and any procedural variations specific to your make and model. Incorrect torque or fastener installation can cause the hood struts to fail prematurely or the hood to drop unexpectedly.
• Inspect the hood hinges, hinge attachment points on the frame, and surrounding body panels for rust, corrosion, cracks, or other damage before beginning the strut replacement. If hinges are damaged or corroded, they may need service or replacement as well to ensure the hood operates safely.
• If you are inexperienced with pressurized strut components or uncomfortable working under the hood, professional installation is recommended. Hood struts are pressurized and, if damaged during removal or installation, can lose their support function or cause injury; a qualified mechanic can ensure the repair is completed safely and correctly.

Step-by-Step: How to Replace Hood Lift Support

1. Open and secure the hood fully. Open the hood all the way and position a padded hood prop or support rod underneath to hold it at a safe working height. Ensure the hood is stable and will not fall during the repair; if you do not have a prop rod, have a helper hold the hood open while you work.
2. Locate the hood lift supports. Hood struts are typically mounted at the top corners of the hood opening where the hood frame meets the engine bay frame, or along the inside edges of the hood hinges. They appear as cylindrical, pressurized metal tubes with ball-socket or pin-type end fittings; there are usually two struts, one on each side of the hood.
3. Remove the fasteners from the first strut. Using the appropriate socket or screwdriver, carefully remove the bolts, clips, or retaining pins that secure the first hood strut to its upper and lower mounting points. Work slowly and do not force any fastener; if a bolt is stuck, apply penetrating oil and wait a few minutes before trying again. Do not attempt to pry or damage the strut itself, as these components are pressurized and puncturing them can cause injury.
4. Disconnect the old hood lift support. Once the fasteners are removed, gently pull or unclip the old strut from both its upper and lower mounting points. The strut may require gentle wiggling or rocking to free it from the sockets or pins; be patient and avoid sudden jerking movements. Keep the hood supported with your prop rod or helper throughout this process to prevent strain on the hood hinges.
5. Consult your service manual for torque specifications. Before installing the new struts, look up your vehicle's specific torque specifications, fastener types (bolt size, clip design, or pin diameter), and any procedural variations in your service manual. This step is critical because specifications vary by vehicle, and using incorrect torque values can cause fasteners to loosen or overtighten, leading to strut failure or safety hazards. Write down the torque specs and fastener sizes before proceeding.
6. Install the new hood lift support. Position the new strut at the correct upper and lower mounting points on the hood and frame. Align the end fittings with the sockets or pin holes and push the strut firmly into place until it seats properly. Begin inserting the fasteners loosely by hand or with light tool pressure; do not fully tighten them yet.
7. Tighten fasteners to specification. Using your torque wrench and the specifications from your service manual, gradually tighten the fasteners on the first strut in a criss-cross pattern (upper-left, lower-right, upper-right, lower-left, or as applicable) to ensure even pressure. Tighten to the specified torque value and verify that the strut is firmly seated and does not shift or move when you apply gentle pressure.
8. Repeat for the second hood lift support. Follow the same sequence for the second hood strut: remove the old fasteners, disconnect and remove the old strut, position the new strut, insert the fasteners loosely, and tighten to specification using your torque wrench. Ensure both struts are installed with equal tension and proper seating; mismatched installation can cause the hood to open unevenly or fail prematurely.
9. Test the hood operation. Gently open and close the hood several times to verify that both struts are functioning smoothly and supporting the hood evenly. The hood should open without binding, stay open at a comfortable working height, and close smoothly without sagging or resistance. If you notice any unusual noise, resistance, or uneven support, stop and recheck the fastener tightness and strut seating.
10. Perform a final inspection. With the hood closed, visually inspect all fasteners to confirm they are tight and properly seated; do not use a wrench or driver to tighten any fastener further unless it visibly moves. Look for any gaps between the strut end fittings and their mounting sockets, signs of leakage or damage to the new struts, and any loose trim or body panels you may have disturbed during the repair. Confirm that the hood hinge alignment is unchanged and the hood sits evenly in the closed position.

Tips for a Successful Hood Lift Support Replacement

• Apply a small amount of silicone-based lubricant or assembly grease to the fastener pins and end fittings before installation. This ensures smooth operation and makes future removal easier; wipe away any excess lubricant to prevent dirt accumulation.
• Take extra care not to cross-thread fasteners, especially when working with older vehicles where corrosion may have weakened the threads. Start each fastener by hand before using a tool, and listen for any grinding or catching sounds that indicate a cross-threaded fastener; if you feel resistance, back out and try again carefully.
• Verify that both replacement struts are identical in type, stroke length, pressure rating, and fastener configuration. Mismatched struts can cause the hood to open unevenly, support the hood at different heights, or fail prematurely; check the part labels and manufacturer specifications to confirm both struts match before installation.
• Use a padded hood prop rod or enlist a helper to safely support the hood throughout the entire replacement process. A hood that closes unexpectedly during strut removal can cause serious injury or damage; never work under an unsupported hood or one held only by your hands.

When to Call a Professional

If fasteners are severely corroded, rusted, or cannot be removed safely without damaging the hood or frame, a professional mechanic has tools and techniques to extract seized fasteners without harm. Similarly, if you discover that the hood hinges are cracked, warped, or damaged during the strut removal, the hinges must be repaired or replaced before new struts can function properly. If mounting holes are stripped or threaded inserts are damaged, professional repairs are necessary to restore safe fastener installation. Finally, if you encounter any unexpected complications during removal or installation, or if you are uncomfortable working with pressurized strut components, a certified mechanic should complete or inspect the work before you drive the vehicle. Hood operation is critical to vehicle safety and weatherproofing; improper installation or undetected hinge damage can result in the hood opening unexpectedly while driving, creating a serious safety hazard for you and other drivers.