Test Pipe Bolt Came Loose - Serious Leak

CBRich · 11-14-2010, 06:01 PM

As stated I had a test pipe bolt come loose. I'm out of town working and can't fix it right now. You guys think a few days with this thing leaking at the headers will cause any issues besides the unbelievable racket?

Jordo! · 11-14-2010, 07:52 PM

Might confuse the primary O2 sensor on that bank -- an exhaust leak just past the O2 is often misread as a vac leak, and so it may get high positive fuel trims and eventually a CEL.

Shouldn't hurt anything, but just a heads up...

CBRich · 11-15-2010, 07:19 AM

I've heard some people worry about valves but I still have the header intact and I can't imagine the valves cooling too quickly after shutting down with the amount of heat under the hood.

Thanks for the input.

christian370z · 11-15-2010, 10:45 AM

Thankfully, the leak is after the upstream wideband o2 sensor which means fueling shouldn't be affected too much. It will definitely throw off the downstream o2 sensor but that is pretty much only there to look for a functioning cat (*ahem*

).

11-14-2010, 06:01 PM	#1 (permalink)
CBRich A True Z Fanatic Join Date: Apr 2009 Location: SC Posts: 2,464 Drives: 370Z Rep Power: 544	Test Pipe Bolt Came Loose - Serious Leak As stated I had a test pipe bolt come loose. I'm out of town working and can't fix it right now. You guys think a few days with this thing leaking at the headers will cause any issues besides the unbelievable racket?

11-14-2010, 07:52 PM	#2 (permalink)
Jordo! A True Z Fanatic Join Date: May 2010 Location: nirvana Posts: 6,394 Drives: 2023 NATM Rep Power: 417	Might confuse the primary O2 sensor on that bank -- an exhaust leak just past the O2 is often misread as a vac leak, and so it may get high positive fuel trims and eventually a CEL. Shouldn't hurt anything, but just a heads up... __________________ Enjoy it. Destroy it.

11-15-2010, 10:45 AM	#4 (permalink)
christian370z A True Z Fanatic Join Date: Jul 2010 Location: Newport Beach Posts: 3,900 Drives: 2010 370Z/Saab 900se Rep Power: 431	Thankfully, the leak is after the upstream wideband o2 sensor which means fueling shouldn't be affected too much. It will definitely throw off the downstream o2 sensor but that is pretty much only there to look for a functioning cat (ahem ). __________________ -320whp / 259wftlbs- SP Rays -- RE-11s -- SpecialtyZ Tune -- Swift Springs -- Stillen 25R Oil Cooler -- Stillen G3 Intakes -- Berk HFCs -- F.I. 12" CBE -- Stillen Sway Bars -- Es14 Spring -- INGS+1 lip -- CF Spoiler -- GTR Start Button -- VLED Parking Lights -- PWJDM V2 shift knob

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11-15-2010, 07:19 AM	#3 (permalink)
CBRich A True Z Fanatic Join Date: Apr 2009 Location: SC Posts: 2,464 Drives: 370Z Rep Power: 544	I've heard some people worry about valves but I still have the header intact and I can't imagine the valves cooling too quickly after shutting down with the amount of heat under the hood. Thanks for the input.