1. Locate the Stuck Lifter:
- Park your Blazer in a safe and level area, turn off the engine, and allow it to cool down.
- Open the hood and locate the engine valve covers.
- Remove the valve covers to expose the lifters.
- Look for stuck lifters that may appear higher than the others or have a different appearance.
2. Confirm the Stuck Condition:
- Gently press down on the stuck lifter using a long flat-head screwdriver or a lifter tool.
- If the lifter moves freely, it's not stuck. If it doesn't move or requires excessive force to move, it's stuck.
3. Clean and Inspect:
- Use a soft cloth to clean around the stuck lifter and the surrounding area to remove any dirt or debris.
- Inspect for any signs of damage to the lifter, pushrod, or camshaft.
4. Apply Oil and Work the Lifter:
- Apply a small amount of clean engine oil to the stuck lifter and the contact surfaces.
- Use the screwdriver or lifter tool to gently work the lifter up and down several times.
- This process helps to free up the stuck lifter.
5. Reinstall Valve Covers:
- Replace the valve covers, ensuring they are properly sealed and tightened to the recommended specifications.
6. Start Engine and Observe:
- Start the Blazer engine and let it run for a few minutes.
- Listen for any unusual noises or observe the engine's performance.
7. Recheck for Stuck Lifter:
- After the engine has warmed up, turn it off and recheck the lifters to see if the stuck lifter is now moving freely.
8. Test Drive and Monitor:
- Take the Blazer for a test drive to observe its performance and any potential issues.
- Continue to monitor the engine's performance over the next few days, checking for any signs of lifter problems.
9. Seek Professional Help:
- If the stuck lifter issue persists or you notice any engine performance concerns, it's advisable to consult a qualified mechanic for further diagnosis and repair.
Note:
Working around the engine can be dangerous. Always take appropriate safety precautions, such as wearing protective gloves and eyewear. If you're not comfortable performing these steps, it's best to seek assistance from a qualified mechanic.
