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What is shooting out of my exhaust???

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Old 05-24-2007, 02:21 AM
  #16  
Loquat15
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I have the autothority stage 2 chips and no cat, i do notice a little condensation, but its not shooting out black liquid... maybe i'll give her a check when i put her head back on ;-)
Old 05-24-2007, 11:23 AM
  #17  
Slantnose!
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Originally Posted by maximus951
Whatever happened to be behind the car when it was started; bins, boxes, tools, me or the lawnmower all received a healthy oval shaped spattering of black speckles... I used to hate it but now that the car is gone, it's kinda cool. I agree with ST.
Yeah, I have a round target too on the garage door.
Kind-of funny we all have this...
Old 05-24-2007, 11:32 AM
  #18  
Oddjob
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Originally Posted by Slantnose!
Yeah, I have a round target too on the garage door.
Kind-of funny we all have this...
Ive got the spatter marks in multiple spots on both the inside and outside of the garage door - wont wash off, needs to be repainted...

As others have said, very normal for a catless car on cold startup.
Old 05-24-2007, 11:35 AM
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ehall
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Autoauthority chips run quite rich at midrange, so yours may be a bit more than others but just think of it as Posche's version of crop circles.
Old 05-24-2007, 01:04 PM
  #20  
cyinisis
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My tailpipe is completely black...

...but the PO of my car did replace an injector, so...
Old 05-30-2007, 10:50 PM
  #21  
nize
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i would say pull the injectors and have them flow-matched;
www.witchhunter.com

if one (or more) injectors are running richer/leaner than the others, you could experience this problem. my car used to do that until i had the injectors flow-matched and it stopped.
Old 05-30-2007, 11:09 PM
  #22  
Ian Carr
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mine does it as well, no cat makes it even worse. its just carbon built up hurray!
Old 05-30-2007, 11:20 PM
  #23  
Geneqco
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Originally Posted by nize
i would say pull the injectors and have them flow-matched;
www.witchhunter.com

if one (or more) injectors are running richer/leaner than the others, you could experience this problem. my car used to do that until i had the injectors flow-matched and it stopped.
With so many people experiencing this, it makes me wonder if it couild be contributing to hg failures... overall reading could be okay but you could have one cylinder that was a bit lean when being pushed.
Old 05-30-2007, 11:50 PM
  #24  
Andy1212
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Hmmm mine doesnt do that at all.
Old 05-31-2007, 12:04 AM
  #25  
Geneqco
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Originally Posted by Andy1212
Hmmm mine doesnt do that at all.
Mine doesn't either, but like Nize, it did before I did the injectors. I think just because an issue may be common doesn't necessarily imply it is normal.
Old 05-31-2007, 04:07 AM
  #26  
nize
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Originally Posted by Geneqco
With so many people experiencing this, it makes me wonder if it couild be contributing to hg failures... overall reading could be okay but you could have one cylinder that was a bit lean when being pushed.
bingo.
Old 05-31-2007, 09:56 AM
  #27  
5speed300
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Mine does it a little too, but it has lessened since I the #1 cylinder injector connector replaced. So you guys think having them flow matched will cure it?
Old 05-31-2007, 02:52 PM
  #28  
nize
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doesn't hurt to try.
Old 05-31-2007, 06:31 PM
  #29  
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how would injectors cause this? the spatter is water mixed with soot...how is a slight mismatch in injector flow going to create water that wouldn't otherwise be there?
Old 05-31-2007, 06:52 PM
  #30  
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mine used to shoot water and soot out. I assume the muffler fills up with water when you make alot of short trips. I fixed the problem by drilling a small hole at the lowest point in the muffler, and you wont believe how much water came out.


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