S2000 Under The Hood S2000 Technical and Mechanical discussions.

Went back to stock, smoke?

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Old 10-01-2011, 02:58 PM
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Default Went back to stock, smoke?

So I just went back to stock and turned on the car and white smoke came from under my hood. Upon closer inspection it seems to be coming from somewhere on my header. My car is MY06 if that makes a difference. Does anyone know if there are other openings on the header besides the part that attaches to the engine and to the cat, as well as the o2? I was looking but couldn't see the exact culprit. It definitely was not coming from the cat joint or where it meets the engine. Any help is greatly appreciated!
Old 10-01-2011, 03:11 PM
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Originally Posted by acus2k
So I just went back to stock and turned on the car and white smoke came from under my hood. Upon closer inspection it seems to be coming from somewhere on my header. My car is MY06 if that makes a difference. Does anyone know if there are other openings on the header besides the part that attaches to the engine and to the cat, as well as the o2? I was looking but couldn't see the exact culprit. It definitely was not coming from the cat joint or where it meets the engine. Any help is greatly appreciated!
could it be burning something off the header? like oils and such? have you let it run for 10 min to see if it went away? if there was an opening it would be very loud.. is it loud?
Old 10-01-2011, 03:27 PM
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Yeah I think its not anything bad now. I thought that too but was unsure since this header wasn't new and had been on my car previously.. i just tightened a few bolts a bit and just ran it with very little smoke, gonna check again just to be sure before I put all the heat shields back on and bring it off the jacks. Thanks!
Old 10-01-2011, 04:05 PM
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no problem hope its nothing serious!
Old 10-01-2011, 05:39 PM
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Did you use PB Blaster or anything on the nuts/studs of the manifold? That can smoke a bit but goes away after 10 minutes or so.....

Utah
Old 10-01-2011, 06:44 PM
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When you say you went back to stock, what was removed/ touched?
Old 10-02-2011, 12:19 PM
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Just bolt ons. Header/Intake/exhaust. I think it could possibly be a mixture of things including PB blaster. It smoked a little when I just drove it but was not overheating or anything and it was just coming from the joints (where I used PB blaster on all of them). I'll keep this updated though but I think it's all good.
Old 10-03-2011, 04:51 AM
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yup, if you installed header/exhaust with PB blaster its definitely that burning off. PB blaster/WD40 is a super light oil so its flash point is pretty high.
Old 10-03-2011, 03:54 PM
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Last time something like this happened to me I had a ceased catalytic converter. I'd pull the cat and make sure the comb is not melted.

That said, if it's not the cat, you've added good bit of back pressure. Maybe it's the gasket.
Old 10-03-2011, 05:23 PM
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I just installed my stock header also and it did the same thing I drove it around after letting it idle for about ten mins and it stopped its just dirt and random stuff from it sitting up I believe I burned a few leaves also haha thought I cleaned it good enough but guess not hopefully yours went away like mine did stock header doesn't sound near as nice at vtec as my amuse header
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