engine 🚗 Dodge Ram 1500 Moderate

How to Fix Dodge Ram 1500 Hemi MDS Tick

Red Rocket · August 7, 2026 · ⏱ 3-4 hours · 2009-2021 Dodge Ram 1500

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A rhythmic tick on cold start in a 5.7L Hemi is classic collapsed MDS lifter failure. Catching it early prevents camshaft damage. Here’s how to swap the lifters.

Step-by-Step Instructions

1
Confirm the tick is from the MDS lifters with a stethoscope.
2
Drain oil and remove the valve covers.
3
Inspect and replace collapsed MDS lifters.
4
Replace the lifter oil pressure check valve if scored.
5
Refill oil, prime the system, and test.

Tools & Parts Needed

🔧 Socket set, New MDS lifters, Camshaft position sensor, Oil and filter

Frequently Asked Questions

How long does this fix take?

3-4 hours

Do I need special tools?

Yes — see the Tools & Parts list above.

Is this covered under warranty?

Check your vehicle warranty. Some repairs may be covered, especially if the issue is a known defect.

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