I have a 1994 Lexus es300 with 170,000 miles it started to smoke white smoke out of the exhaust it smells like raw gas I had replaced the oil due to gas mixed into the oil I could literally lite the dipstick on fire. There is no sign of antifreeze in the oil no milky residue and antifreeze. Does not bubble. Heard it could be the ecu so i went and purchsed. one from the junk yard and i still have the same problem please someone &p me *** my car thanks

 

From your description of what is going on, it sounds like a fuel injector may be stuck open, just pouring fuel into the engine...

That is the only thing, aside from very bad piston/ring damage, that would allow that much fuel into the crank case where the oil / dipstick is...

The easy way to test which cylinder is having issues is to disconnect the fuel injectors one at a time... every time you disconnect one, the engine should change the way it runs - if it doesn't change, you have found the problem cylinder / injector... So, disconnect one, see what happens, plug it back in, try another one...

Once you find the problem cylinder, get a compression tester and see if you still have compression in that cylinder... if its decent, probably worth trying to replace the injector and see what happens... if the compression isn't so good, time for a motor... excess fuel can wash the oil from the cylinders causing metal on metal contact between the pistons/rings and cylinder walls...