Tips for finding an exhaust leak

Huck · 08-07-2012, 08:52 AM

Ok guys I need your help on this one. I'm wondering if you guys have any cool tips or tricks to finding an exhaust leak. I recently installed my FI headers, and there's a loud hiss sound coming from somewhere near the passenger side O2 sensors. I can't pinpoint the location exactly. So far I've tried using a stethoscope and a smoker machine. The smoker uses baby oil to produce a vapor which it then pumps through the muffler into the exhaust system while you block everything else off. We pumped at about 7lbs pressure and found a few tiny leaks, but the sound is still there. I have checked every bolt and everything seems to be tight. I'm gonna try putting some sea foam in the intake manifold and see if I can find something that way. Do you guys have any other suggestions? This sound is driving me nuts, so I really appreciate any help you can give.

Sent from my iPizzle using magic and new-fangled science stuff

08-07-2012, 08:52 AM	#1 (permalink)
Huck A True Z Fanatic Join Date: Jan 2012 Location: Cocoa, Florida Age: 41 Posts: 5,075 Drives: Pantydropper machine Rep Power: 33	Tips for finding an exhaust leak Ok guys I need your help on this one. I'm wondering if you guys have any cool tips or tricks to finding an exhaust leak. I recently installed my FI headers, and there's a loud hiss sound coming from somewhere near the passenger side O2 sensors. I can't pinpoint the location exactly. So far I've tried using a stethoscope and a smoker machine. The smoker uses baby oil to produce a vapor which it then pumps through the muffler into the exhaust system while you block everything else off. We pumped at about 7lbs pressure and found a few tiny leaks, but the sound is still there. I have checked every bolt and everything seems to be tight. I'm gonna try putting some sea foam in the intake manifold and see if I can find something that way. Do you guys have any other suggestions? This sound is driving me nuts, so I really appreciate any help you can give. Sent from my iPizzle using magic and new-fangled science stuff __________________ VLEDS \| Evo-R \| Moddiction \| CF Hood Struts \| F.I. CF CBE & LTH \| Stillen CAI \| NST Pulleys \| UpRev \| Z1 \| M7 \| Status \| Forgestar \| PSS \| Whiteline \| SPL \| SPC \| Kenwood \| Zenclosure \| Kicker \| Alpine Type R

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