streetstang

Anyone know what the white smoke is all about? Seems like the car's running rich, and when I kick my right foot down, it'll be fine from 2k-4k, then when it hits right there, it starts to stutter, and sorta bog out. That's rich, right? Anything I should be concerned with right now? Might be the tune that I'm running. Kinda got me freaked out. I appreciate any info that I can get [&:], I kinda got a heads up from a Predator tuning device thing (LOL looks like a gameboy), but it says that it's somehow running a fuel trim like 10% rich when it gets up there in the revs. Thanks again!


-C

TheDarkPath

White smoke is caused from a lean condition (worse than running rich). I would get it on a dyno and have the A/F ratio checked.

mygt500

1+

Mustang3GT07

I agree with TheDarkPath.

chupac

Correct about it running lean, when the fuel trim says rich it's trying to make the a/f richer, it doesn't mean that it's running rich. Get it fixed befor you hurt something.

Lees07GT

Well, I'm no expert on the Mustang engine, but with most engines I have worked with over the years, white smoke was the result of oil getting into the combustion chamber. I have never heard of it being caused by a lean condition before.

StartMeUp

I thought it went this way:

Blue = oil
Black = rich
White = coolant (not to be confused with condensation after start up)

howarmat

Only at start up though, not 2000-4000 rpm after start up

streetstang

ahhh...dang..so I've been running lean the whole time? I checked the coolant to see if I had oily residue(there was none though)because my friend's uncle said that I might get a little bit of head lift with the boost (around 5psi). ARP studs should do the trick I think. I fixed the oil problem, the turbo was clocked just a little off, and it affected the oil flow, and some of it got back into the chamber, just like Lees07GT said. The thing that I don't really get is, that it's lean. A friend of mine has a turbo'd S197, and she said that before they got it tuned right, it would throw a little bit of white smoke andstutter out at the top of the rev range, and when it was lean, it just ran super hot and stuttered down low. It could be different, since tuning won't be the same around the whole range. I'm not even sure. All I know is that I need a bunch more info (if you guys can bear with me [&:]) on the whole lean/rich situations, and what I can use to diagnose a lean/rich scenario. Also, does anyone know how much an average dyno tune costs?


Thanks a lot. You guys are great [&:]


-C