Exaust smoke
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From: Sioux Falls SD
Exaust smoke
Please take a peek at the first video and give me some opinions. Videos have been edited on youtube but that takes awhile so the early viewers may see my dorky walk up to the car and me talking to myself at the end.
Cold Start and then rev to 4k (50F outside, just washed car, water dripping from muffler)
http://youtu.be/MUMrYcIYzWg
04 6MT Maxima with 93k. I'm cheating and posting a VQ question here on my home forum since the maxima forums just don't have the same traffic. The max VQ is the non-revup version, detuned from what's in the G. I recently changed OE plugs and PCV valve (cheap part easy to reach when doing plugs, thought it could help smoke issue). Completely stock. 5w30 Mobil1.
2 additional videos which I've summarized
Slightly warm, rev to 5k (side view, more of the same smoke)
http://youtu.be/qGG0e_New6w
Warm after several full throttle runs up to 65mph. I could see smoke in rear mirror the first few runs, but then it's gone. I can't see any smoke in this vid:
http://youtu.be/ruyXMx7yy3Q
I have a coolant leak on one of the small lines that's difficult to replace. I replaced the upper and lower hose awhile back. So because of the existing leak, I can't say one way or another that my loss of coolant is manifold gasket related. I can't see anything milky in the oil. I removed the oil filler cap after the enthusiastic runs and I didn't notice anything abnormal there. Engine runs smooth and feels like new (I can compare it to my 06 G coupe). Consumes very little oil.
My opinion here is something is building up somewhere (exaust, intake manifold) and burning off with heated acceleration. But I could be wrong and this could be a gasket problem which I don't know if I want to do myself. I had a common gasket failure on a 99' Alero (3400 engine, dexcool class action lawsuit, it was a big deal). On that, you could see leaking around the gasket on the outside of the engine, no exhaust smoke. I also couldn't see any milky look to the oil on the Alero so I really don't know what that looks like.
I've thought about seafoam but that stuff still scares the crap out of me. I'm not completely opposed to trying it though.
Cold Start and then rev to 4k (50F outside, just washed car, water dripping from muffler)
http://youtu.be/MUMrYcIYzWg
04 6MT Maxima with 93k. I'm cheating and posting a VQ question here on my home forum since the maxima forums just don't have the same traffic. The max VQ is the non-revup version, detuned from what's in the G. I recently changed OE plugs and PCV valve (cheap part easy to reach when doing plugs, thought it could help smoke issue). Completely stock. 5w30 Mobil1.
2 additional videos which I've summarized
Slightly warm, rev to 5k (side view, more of the same smoke)
http://youtu.be/qGG0e_New6w
Warm after several full throttle runs up to 65mph. I could see smoke in rear mirror the first few runs, but then it's gone. I can't see any smoke in this vid:
http://youtu.be/ruyXMx7yy3Q
I have a coolant leak on one of the small lines that's difficult to replace. I replaced the upper and lower hose awhile back. So because of the existing leak, I can't say one way or another that my loss of coolant is manifold gasket related. I can't see anything milky in the oil. I removed the oil filler cap after the enthusiastic runs and I didn't notice anything abnormal there. Engine runs smooth and feels like new (I can compare it to my 06 G coupe). Consumes very little oil.
My opinion here is something is building up somewhere (exaust, intake manifold) and burning off with heated acceleration. But I could be wrong and this could be a gasket problem which I don't know if I want to do myself. I had a common gasket failure on a 99' Alero (3400 engine, dexcool class action lawsuit, it was a big deal). On that, you could see leaking around the gasket on the outside of the engine, no exhaust smoke. I also couldn't see any milky look to the oil on the Alero so I really don't know what that looks like.
I've thought about seafoam but that stuff still scares the crap out of me. I'm not completely opposed to trying it though.
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