HEMI Lifter Tick Repair Cost: What the Dealer Won't Tell You (GTA)

Cars With Fares does not accept timing-chain, internal-engine, head-gasket or lifter/camshaft repairs as a mobile service. This guide explains the failure and workshop repair considerations. Ask a suitably equipped repair shop to confirm the diagnosis, scope and written estimate. An enquiry does not book this repair or guarantee a referral appointment.

What the HEMI lifter tick actually is

Here's the problem. Those MDS lifters ride on the cam on a tiny roller bearing, and that roller seizes. Once it stops spinning, it stops rolling over the camshaft lobe and starts skidding across it. Metal-on-metal, every revolution. That skid is the tick you hear. Leave it long enough and it wipes the lobe flat, the cam is toast and the shavings go straight into your oil, which is how one bad lifter turns into a few of them.

The real symptoms, what I listen for

People describe it a dozen ways, but it comes down to a short list. The earlier you catch it on this list, the cheaper it stays.

• A tick or tap at idle that quiets down as you bring the revs up. Classic early MDS lifter. This is the one you want to catch, text me a 10-second clip of it cold and I can usually tell you over the phone.
• A misfire light. P0300, or a cylinder-specific code like P0301 through P0308. Now the lobe is wearing and a valve isn't opening fully. The clock's ticking faster.
• Power loss under about 2,500 RPM, a rougher idle, sometimes a faint shudder. The motor's down a cylinder and doesn't want to pull off the line.
• An oil-pressure dip on deceleration, or the light flickering at a hot idle.
• Metal on the dipstick or in the oil. Fine glitter or flakes. That's the cam and lifter grinding themselves up. Stop driving.

Can it wait, or do I park it?

Straight answer, because that's the whole point of calling someone you trust:

If it's just a faint tick at idle that goes away with RPM, no check-engine light, nothing on the dipstick, you've got some time. Not all winter, but you're not stranded tonight. Book it, drive it gently, skip the highway hammering up the 401 and the heavy throttle.

What it actually costs, done right, at your door

Why this job is better done at your door

About the MDS delete

HEMI lifter tick. FAQ

The roller on an MDS (cylinder-deactivation) lifter seizes, stops spinning, and skids across the cam lobe instead of rolling over it, metal on metal. That skid is the tick. The lifter bore only gets a strong oil feed when the MDS solenoid opens, so at idle those lifters run starved, which is why it ticks worst at idle and why it's the MDS lifters that go, not the others.

A faint idle tick that quiets with RPM and no misfire light, you've got a little time, book it soon. A P0300-series misfire, a power loss under 2,500 RPM, or metal on the dipstick, park it. Past that point every kilometre grinds metal through the engine and risks turning a $3,000 repair into a long block.

Do you have to pull the engine to do the lifters?

Ready to deal with it? Mobile engine repair · mobile diagnostic · how mobile service works · get a flat quote