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2023 Outlander Engine Ticking Noise on Cold Start

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Brittany E. · rep 0 · May 22, 5:31 AM · 1 replies · solved · Question

Vehicle: 2023 Mitsubishi Outlander SE

Hey everyone,

I've got a 2023 Mitsubishi Outlander SE with the 2.5L engine, and I've noticed a new and concerning sound lately. On cold starts, especially after the car has been sitting overnight, there's a distinct ticking or tapping noise coming from the engine bay. It's quite noticeable for the first minute or two, and then it seems to quiet down significantly as the engine warms up.

The car only has about 15,000 miles on it, so I wouldn't expect any major engine issues this early. There's no check engine light, and once the ticking subsides, the engine runs smoothly with no loss of power or other strange symptoms. I'm using the recommended oil weight (0W-20).

Is this a normal characteristic for the 2.5L engine in the newer Outlanders, or should I be worried? What could be causing a cold start ticking noise that goes away when warm?

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 5:31 AM

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ClearTheCode admin answer:

A ticking or tapping noise on a cold start that subsides as the engine warms up is a common complaint across many vehicle makes, including your 2023 Mitsubishi Outlander 2.5L. While it can sometimes be benign, it's always worth investigating, especially in a newer vehicle.

Possible Causes:

  1. Hydraulic Valve Lash Adjusters (Lifters): These components rely on oil pressure to maintain proper valve clearance. On a cold start, especially if the oil has drained down, they can be slow to pump up, causing a ticking sound until oil pressure builds and they fill with oil.
  2. VVT (Variable Valve Timing) Actuators/Solenoids: The VVT system uses oil pressure to adjust camshaft timing. If the actuators or their solenoids are slow to respond or have minor issues on cold start, they can cause a ticking. This could eventually lead to codes like P0011 or P0014.
  3. Exhaust Manifold Leak: A small crack or loose bolt in the exhaust manifold can cause a ticking sound that is more pronounced when the engine is cold and the metal is contracted. As it heats up and expands, the leak can seal itself.
  4. Fuel Injectors: Some fuel injectors can produce a normal ticking sound, which might be more noticeable when the engine is cold and other engine noises are less prominent.
  5. Timing Chain Tensioner: While less common in newer vehicles, a faulty timing chain tensioner can cause a rattling or ticking noise until oil pressure fully extends it.

When to See a Shop: Since your vehicle is still under warranty and relatively new, it's highly recommended to have it inspected by a Mitsubishi dealership. Document the sound (perhaps with a video) and note the conditions under which it occurs.

Recommended Steps:

  1. Schedule a Dealership Visit: Explain the issue and try to leave the car overnight so they can perform a cold start diagnosis.
  2. Oil Quality/Level Check: Ensure the correct oil viscosity (0W-20) is being used and the oil level is consistently full. Sometimes, a slightly low level can exacerbate lifter noise.
  3. Listen with a Stethoscope: A technician can use an automotive stethoscope to pinpoint the exact location of the ticking sound, helping to differentiate between lifters, injectors, or exhaust leaks.

While some cold start noises are considered normal, a persistent or worsening tick should be professionally evaluated to rule out any underlying issues that could lead to premature wear.

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