hey, i was just toying with my fuel pressure today under the hood and pry had the car running for like 10-20 minutes total while sitting there in the driveway... and of course i was reving it up and screamin her and letting it sit and idle and once i was done i turned the car off walked behind it to my amazement to see these to big wet spots on the cement.. there still wet too... i mean like thick oil sorta... it looked alot like maybe some watery oil almost ... but i'm guessin some water with soot on it... but it was just so black and was splattered about in an area about the size of a basketball on each pipe... and i noticed this one other time too i was in a shop and behind each pipe was like a 5 inch wide splatter area that shot back about 2 foot... and this stuff after it dried and i noticed it wouldn't come off it was like black spots of tar or oil or somethin like that you know ... something that wouldn't come off.. what kinda problem do i have ???



-vetter

 

I noticed that in your sig, you have you smog pump removed. How long have you had it removed for? I think it has something to do with that. I had the same thing happen to me and it baffled me for some time. I'm pretty sure it's the cat that is clogging and or falling apart. They tend to do that without the smog pump since they won't run hot enough to burn the crap off that is inside of it. I took my cat off and not no watery soot out the back.


Tom

 

so let me get this right you took your cat off and now just have pipe... will this make my car alot louder because right now my car seems to be loud enough the way it is... seems like takin the cat off would make it alot louder.... smog pumps been off since august or so.... thx




-vetter

 

removing the smog pump isn't going to make your exhaust spit crap.

It's completely normal for moisture to accumulate in your exhaust due to condensation, and when you run it, it's got to go somewhere, so it winds up on your garage floor. if you have ever stuck your hand into a tail pipe, I'm sure you've seen that you have a bunch of black crap on your hands after. Well when the water is evaporating and boiling off in your exhaust, it's "steam cleaning" the inside of your exhaust, so some of that black crap is going to mix with the steam and accumulate. My guess is that this is what you're seeing.

Generally there's not enough black crap in the exhaust for this to happen unless you're running very rich. My IROC was so bad that it left black stains on my garage floor.

 

ya thats what i was assuming it was water but mine also left black stains on my garage floor so i was like what the heck water can't leave stains can it...

ya i replaced my 02 sensor and man that thing was black sooted bad.... my car has to be running extremely rich... cause the **** is black.... anyone know how to set my edel brock 1406 down so its not running rich anymore ??



-nathan vetter

 

its not oil ur just runnin rich, sounds like you boosted the fuel pressure up a little too much causing it to richen up the mixture quite a bit