blue smoke is oil, and synthetics usually are harder to tell, they can burn white or something?
the new way is to smell it i believe, and if it smells "sweet" it's coolant.


try the new ecu idea if you can.

local SC owner u can try it out with?

oright, from what i read from the link it sounds like i have the same problems, im gonna check the ecu tomorrow.

my car was automatic before and i made it a stick. does it matter if i use a at or manual ecu?

No it does not matter

is the ecu from a 1993 gs300 the same as a 1993 sc300 ecu

white - coolant
black - fuel
blueish gray - oil
brown - old engine that hasn't turned over in a while and is blowing stuff out

does anyone have a ecu for sale in southern cali?

I have a stock 5speed computer if your intrested. Shoot me a PM

im positive it's ur valve stem seals. When the engine is idle the oil drips onto the valve and that mixes into ur a/f, that burns off and that's y u get the smoke. pretty expensive to fix.

i just took it to a shop again. and the smoke is all fuel. its running super rich. the spark plugs are super black.

What are you using for tuning?

im not using anything for tunning. as far as electronics go i have boos controller and aftermarket fuel pressure regulator.

I got an extra ECU out of a known working NA-T

oright i just purchased an ecu, and connected it. the car still has the same problem. white smoke comes out of the exhust and it smells like gas, and when the car warms up the smoke goes away. and there is gasoline in the oil.

As megadeth pointed out, it's likely the valve stem seals.

The supra owners out there are VERY familiar with this problem. The seals on the valve stems get dried out and leak while the car is warming up. After the car is warm, the seals swell and make a good seal again... and the smoking goes away.

I was quoted 10 hours of labor by a VERY reputable shop to perform this service... it's time and labor intensive. There's two ways to do it: pull the head, or pressurize the cylinders with air and do it with the head still on the motor. One way has you buying (and paying for installation on) a new head gasket... the other does not.

Now the fouled plugs and gas in the oil suggest you might have a different problem, or a problem separate from the leaky valve stem seals. Have you tried changing the plugs and seeing how it runs? If the plugs are fouled, you're not burning all of the fuel you're sending to the cylinder any more.... which could be exacerbating your problem.... or an indication of the cause. I don't know enough to tell you the difference.

Good luck.