S2000 Under The Hood S2000 Technical and Mechanical discussions.

grey smoke in vtec?

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Old 11-25-2011, 02:44 PM
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Oil causes a light blue smoke, coolant causes a white smoke, and unburned fuel causes blackish smoke. My guess is probably unburned fuel mixed with the slightest oil, which is normal in an AP1. Is it ALOT of smoke or just a small amount? A valve adjustment may help if you have an oil burning issue. Do you keep an eye on your oil dip stick? How often do you top off the oil?
Old 11-25-2011, 03:54 PM
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Old 11-25-2011, 04:03 PM
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vtec fluid? LOL JK (: i believe it's just oil burning. what kind of oil do you use? 10w-30?
Old 11-25-2011, 05:50 PM
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Leaves a dense cloud for as long as im in vtec i use 10w30havnt had to top off yet with about 800miles on oil change
Old 11-27-2011, 01:07 AM
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Originally Posted by jdmda9noke
I use pensoil
what??????
Old 12-05-2011, 03:56 PM
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anyone else?
Old 12-05-2011, 08:50 PM
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If its the entire range thats strange. I think you should get a compression test to check if your rings are shot. I still think its the carbon blowing out of your car exhaust. After DDing my S for about a week, if I get on it I'll get a cloud of black (looks gray in the rearview, but its black at the exhaust tips) smoke near my ignition cut in 1st, 2nd gear. Are you getting puffs or constant streams? You'll need a friend to check it though, its impossible for you to see the color at the exhaust pipes and the timing of it.

Are you running a test pipe by any chance?
Old 12-07-2011, 08:18 PM
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I think it has to do with the lack of periods and commas and other such stuff
Old 12-07-2011, 11:17 PM
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Thats oil,but a little bit. When you start burning alot of oil,then you will see a blue hue to it. Might want to check your pcv system. Otherwise,it could be the oil control rings starting to give out.
Old 12-08-2011, 11:05 AM
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Originally Posted by B0neSt0ck
Thats oil,but a little bit. When you start burning alot of oil,then you will see a blue hue to it. Might want to check your pcv system. Otherwise,it could be the oil control rings starting to give out.
My AP1 with 94k on it does the exact same thing. It's most likely just the typical oil burning issue with these cars. Do you have a test pipe? I noticed it more when I installed mine. I wouldn't worry too much at this point.


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