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Valve Lash Adjuster

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HL129 Valve Lash Adjuster - Direct Fit
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Product Details
Warranty : 24-months or unlimited mile AC Delco limited warrantyAnticipated Ship Out Time : Same day - 1 business dayQuantity Sold : Sold individually
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Valve Lash Adjuster Guides

How to Easily Replace a Valve Lash Adjuster

It was there when you started your car. You continued driving, but it just won't go away. Irritated by that loud tapping noise? Do not ignore it any longer. Check under your car's hood and you'll find that your valve lash adjuster needs replacement. Now, if you're on a tight budget, it won't be a problem because you can replace the valve lash adjuster by yourself. Below are steps to teach you how.

Tools you need:

  • Nose pliers
  • Allen wrench
  • 10mm Socket 3/8" Drive
  • 17mm Socket ?" Drive
  • Torque wrench
  • Feeler gauges .008" and .010"
  • 10mm end wrench

Difficulty level: Moderate

Step 1: Remove the plug wires and the battery.

Step 2: Remove the valve cover by using the pliers to squeeze the tabs on the clamps that hold it in place. You should already see the rocker assembly after the valve cover is removed.

Step 3: Loosen the bolts holding the rocker assembly, and pull the lash adjuster out with nose pliers.

Step 4: Push the air out from the new lash adjuster by pushing its ball spring in for about 12 times. Use an Allen wrench to do this.

Step 5: Install the new lash adjuster in the rocker assembly.

Step 6: Reinstall the rocker assembly back onto the head.

Step 7: Reverse these steps to reinstall everything back to their proper places.


  • If your plug wires aren't numbered, take careful note of their proper positions.
  • The valve lash adjuster and the rocker assembly are precision parts. Even the slightest hint of dirt will affect their performance. Keep them in a clean area while you're doing the job.

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