White smoke & Unburned Gas
So I have had my car turbo'd for around 4 months now and loving it. It's a '00 running a DIYPNP and begi-S kit. It's running 9ish psi and I have it @ 11.3 AFR while above 6psi or so. I have tuned the spark map with the diy det cans and everything has been running really great, except for one thing. I always thought it was "normal" for a turbo car, but someone brought it to my attention that it is not. Whenever I step on it in boost, there's a good amount of white smoke that comes out that smells a strong stench of hydrocarbons. I have had no issues losing coolant, and it's certainly not the smell of it. It's most certainly gas (which I assumed normal) but there is quite a bit that comes out (a smokescreen behind the car when I get on it). My injectors are not fouled at all, the car runs fine, there isn't any ping, and no real performance issues....Is this normal?
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No, not normal.
Is it bluish-white? That would be burning oil. You may have a problem with the turbo oil seals. You may need a restrictor in the oil feed line to the turbo. Etc. Normally, a too-rich mixture causes black smoke. I have had one case where a super-rich mixture caused white smoke. That was on a Mercedes. The Bosch K-Jet fuel injection was running so rich that gasoline diluted the oil and the oil was burning off. You can check for that by smelling the oil . . . does it smell like gasoline? I don't think that's your issue though. I'd start with the turbo seals. |
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