Ticking sound not inside engine

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Oct 3, 2017 | 10:19 AM

westend

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Ticking sound not inside engine

5.4 V8-197K mi. When accelerating I hear a ticking sound that is continuous and even. When idling or not accelerating there is no ticking sound.

A friend said this may be EGR related but I thought I'd ask here, first, before diving in. This Forum is typically accurate and positive with help and advice. Thanks guys, for making my experience here awesome!

Oct 3, 2017 | 12:18 PM

FractureCritical

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Quote:

Originally Posted by westend

my guess would be an exhaust leak under load at one of the manifolds. the passenger side manifold at the rearmost bottom bolt is particularly fond of snapping off in the manifold casting.

Oct 3, 2017 | 02:06 PM

westend

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Quote:

Originally Posted by FractureCritical

my guess would be an exhaust leak under load at one of the manifolds. the passenger side manifold at the rearmost bottom bolt is particularly fond of snapping off in the manifold casting.

Thanks, I will investigate.

Oct 3, 2017 | 08:47 PM

westend

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No problem with exhaust passenger's side. Noise is on driver's side and is difficult to replicate, opening throttle while stationary. I was able to hear a slight "chuff" so a more detailed inspection of that side exhaust is coming.

When under load, on the highway, while accelerating, the "tick" is not in rhythm with any cylinder. It is spaced more apart than RPM. It is fairly loud and almost metallic.