Hearing Engine Brake Sounds In The Cab

[Corkey]

Check the exhaust manifold for leaks or loose nuts.

Spray soapy water on the manifold and flange.

If air bubbles form, you have found the culprit.

Due to heat cycles, expansion, and contraction, over time, a stock manifold will start to crack and develop your symptoms.

Is it more noticeable at Temp or under a load rather than cold?

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[jgruberman]

Check the exhaust manifold for leaks or loose nuts.

Spray soapy water on the manifold and flange.

If air bubbles form, you have found the culprit.

Due to heat cycles, expansion, and contraction, over time, a stock manifold will start to crack and develop your symptoms.

Is it more noticeable at Temp or under a load rather than cold?

It seems to be noticeable at any temp.

This morning the truck was colder than usual, and the idle ticking was louder, but when at high speeds, it's barely noticeable.

However, the engine brake sounds like a jet engine in the cab.

Sent from my SM-S908U using Tapatalk

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[AK Bob]

It seems to be noticeable at any temp.

This morning the truck was colder than usual, and the idle ticking was louder, but when at high speeds, it's barely noticeable.

However, the engine brake sounds like a jet engine in the cab.

Sent from my SM-S908U using Tapatalk

Agree with @Corkey it sounds like you have an exhaust leak in the engine bay.

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