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Knocking noise possibly exhaust related

mxdirtrider56

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mxdirtrider56 Enthusiast

mxdirtrider56

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I have noticed a knocking noise coming from my truck. The noise is consistent. It happens on cold starts and when it's hot, doesn't matter it is always there. The noise does not seem to be coming from the engine. If the hood is up the engine sounds smooth. The noise is more noticable near the front wheel wells. It is the loudest up under the truck near the passenger side catylitic converter. Is this possibly exhaust related? Anyone have any thoughts? I took a video where you can hear it but we can't attach files over 1MB so I don't know how to upload it.

tyhuck Senior Enthusiast

tyhuck

Posted
Posted

Leak. I have the same problem right now. Does it sound like a lifter ticking, and get worse under acceleration? Thats what mine id doing, but like you said, its in the wheel well, not under the hood.

mxdirtrider56 Enthusiast

mxdirtrider56

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  • Author
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Leak. I have the same problem right now. Does it sound like a lifter ticking, and get worse under acceleration? Thats what mine id doing, but like you said, its in the wheel well, not under the hood.

 

 

I don't hear a knocking sound under acceleration. Sometimes when I'm cruising around 50 mph, I hear a slight rattling sound under acceleration. It's not a metallic sound. I'm taking it into the shop to have it looked at next week.

tyhuck Senior Enthusiast

tyhuck

Posted
Posted

Still sounds like a leak to me. Yours is probably just further back than mine. Mine is where the manifold connects to the down pipe.

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