I have a rebuilt 13BT from Banzai, TO4Z turbo setup, 550cc prime and 1600cc sencondarie running on a Power FC in a AE. I purchased the car back from the person I sold it to years ago and he never did anything with the car after I sold it to him. I was able to fix a few wiring issues and I was able to get the car running/driving. One of the problems is that there is a black fluid that comes out of the exhaust flange at the bottom of the downpipe and mid pipe and falls onto the ground. It smells like raw fuel. It has left a large body size spot where the downpipe connects to the midpipe and another smaller spot further back where the midpipe and muffler connect. The car has had the OMP removed and is running premix. I have done compression test and the motor is producing 110psi on the rear housing and 105psi on the front housing. There was no oil that came on of the motor during the compression testing. The spark plugs are black as if it is running extremely rich if not close to flooding. The turbo is new and has zero shaft play. The car does smoke like hell but does not smell like engine oil burning or coolant. Both engine oil and coolant levels are at OE recomended levels. I am curious what others people ideas are. I was thinking leaking injector and allowing to much fuel in the motor. The raw fuel is premixed and it is hitting the hot turbo and being burnt there causing the smoke and all the rest of the unburnt fuel is pooling in the exhaust...

 

I wouldn't think fuel could pool in the exhaust with out igniting from the heat, especially considering the high temperature of rotary exhaust. It would be more likely to just be condensation that's mixing with carbon in the exhaust that makes it look oily and smell strong.

Does it go away after the car is warmed up?

 

If you take a look at this thread post your thoughts. I'm open to all ideas.

 

Actually I wish I could post pictures of these black marks on the concrete. It actually looks as if it just drains out of the exhaust. It doesn't go away. This is the first time the motor has ran in a driving condition and it is just so weird.

 

When things smell like fuel, its fuel. Sounds like your running super rich. And to the guy above, fuel cant burn when theres not enough oxygen.

I dont know enough about power fcs to tell you what to look for.

 

I thinking about inspecting the injectors to see if they are failing.

 

I just think you are running too much fuel and it's not getting burnt.
Post this up on the Power FC section in the forum and see if the Guys there can help you out.

 

Thats a great idea. Thanks.