MYSTERY EXHAUST LEAK???

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CarolinaOBS

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Just recently I've noticed a distinct exhaust leak "tick" coming from under the hood on the drivers side. I only hear it under acceleration, and it is quite loud because i can hear it over my loud exhaust. I have checked the manifold bolts and gasket-> good, down pipe flange-> good, and checked the manifold for cracks-> none to be found. So where the heck is it coming from???? please, any suggestions? 99 tahoe, L31 vortec.
 

SAATR

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Checked the EGR tube? Runs from the back of the driver manifold to the intake. It has a braided cover over it that would cover it and help quieten the sound at idle.

Sent from my XT1585 using Tapatalk
 

CarolinaOBS

ZIP TIES AND PB BLASTER
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Checked the EGR tube? Runs from the back of the driver manifold to the intake. It has a braided cover over it that would cover it and help quieten the sound at idle.

Sent from my XT1585 using Tapatalk

it was the down pipe flange bolts but i checked the egr tube and dang it was loose too, all tight and quiet now.
 
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