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Old 08-20-2012, 02:47 AM   #1
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Default Black exhaust

Wondering if anyone knows what this is. I noticed some black crap coming out of my FM turbo exhaust even before I put on my MSPNP with the 1000cc's. Now it seems to be even more black crap. Weird thing is it doesnt have a sweet smell, so i ruled out coolant. Doesnt appear to be oil either (maybe it is), but doesnt seem to be blueish or have the touch/feel of oil. Its almost like condensation that has soot in it. You can put your hand an inch or two away from the pipe and your hand gets spit on with water like liquid that has essentially no odor, and had a black soot color. Any ideas?
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Old 08-20-2012, 03:56 AM   #2
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...it's condensation with soot in it.
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Old 08-20-2012, 09:57 AM   #3
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Quote:
Originally Posted by savington View Post
...it's condensation with soot in it.
lol!!!! - +1
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Old 08-20-2012, 10:01 AM   #4
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tune leaner.
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Old 08-20-2012, 10:13 AM   #5
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taste it.

if it tastes bad its condensation with soot in it.
if it tastes good its probably chocolate.
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Old 08-20-2012, 10:19 AM   #6
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Seafoam that bitch.
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Old 08-20-2012, 10:49 AM   #7
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I tried to rule out condensation since it does it even after its warmed up. I have my auto tune running in tuner studio, and it seems pretty close. My datalogs show a fairly close AFR. Seafoam eh? The fuel additive, or oil additive? (I think it does both right?)
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Old 08-20-2012, 11:03 AM   #8
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Just FYI, anytime my motor has spewed the black water from its orifice, it was time for a new block.
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Old 08-20-2012, 11:04 AM   #9
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If your muffler packing is soaked with wetness it will take quite a while to cook off. Drive around for an hour and it will stop. Perfectly normal, btw.
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Old 08-20-2012, 11:11 AM   #10
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Well its been doing it for a while, and wont stop so it must be still happening at the engine/turbo level, and not just soaked up in the exhaust system. Not loosing any coolant, and oil seems normal. My fear is the turbo bearings. Would there be any other signs if the turbo was starting to puke?
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Old 08-20-2012, 11:14 AM   #11
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don't think it can even puke coolant. just oil.

compression/leakdown?
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Old 08-20-2012, 11:16 AM   #12
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I am going to test compression this week. Car runs great, just that black crap...
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Old 08-20-2012, 11:23 AM   #13
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I've noticed on exhausts with no cat/less sound dampening/straight thru mufflers and no resonators, they have more of this upon startup/warmup. Mine does it a lot until I go for a drive. It's never bothered me. Did it with a brand new engine too...like 900 miles new, so I know it wasn't an engine problem.
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Old 08-20-2012, 11:30 AM   #14
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Got a FM cat and FM turbo exhaust. You think that will fit the category? Obviously cant tell while driving it, but I do notice it's worse while cold and warming up vs. once its warm. Once its warm it doest it but not nearly as much. I guess i am just curious what the heck it is. Oil, gas, condensation, coolant, morning coffee....
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Old 08-20-2012, 11:35 AM   #15
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I wouldn't be worried about it. It's just soot mixed with water vapor that builds up when the car cools down.
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Old 08-20-2012, 11:40 AM   #16
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Any way to limit this? My driveway has seen better days. We still thinking I am too rich? I have noticed pretty bad MPG's when i am just cruising and not flogin' it.
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Old 08-20-2012, 11:47 AM   #17
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well you are running 1000cc injectors on a 1.6L

so i'm sure you're rich as crap... considering I doubt you are running seq. injection, so you're probably at what? 11.0:1 at idle?
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Old 08-20-2012, 11:52 AM   #18
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what does the wideband say?
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Old 08-20-2012, 11:52 AM   #19
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These ID's are down to 1.1ms response time, so i can get it to run at 20:1 at idle if i want, but now its about 14:1 (where my AFR table is at idle). I wonder if my Accel/Enrich settings are a bit too aggressive though. My idle pulse width is about 1.67ms, and i only have accel/enrich kicking .1 to .9ms at heavy throttle blips.
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Old 08-20-2012, 11:54 AM   #20
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they should have a faster response time then that. I run my 460cc injectors at 1.7ms at idle...with seq. injection.
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