1993 Lexus SC 300 Sensors or engine?

  • 1993 LEXUS SC 300
Engine Mechanical problem
1993 Lexus SC 300 6 cyl Automatic 200k miles

My car has thick white clouds of smoke from the tailpipe when its running. It doesn't overheat, and the smoke smells like gas. I was originally told it may be the Mass air flow sensor, and I replaced that but there is still smoke, not as much but still more than usual. It idles low, the check engine light is not on and prior to replacing spark plugs, there was oil inside where the spark plugs were. Does any of these symptoms point to a particular problem? I have clues that it could be a couple things but every time I think I may know what it is, I find a reason why it may not be what I originally thought. Please help, I'm so confused. I have talked to at least three mechanics that have looked at the car and I am still unsure, maybe, they weren't the best people to consult since I replaced the part they suggested was the problem


Do you
have the same problem?
Saturday, September 18th, 2010 AT 12:38 AM

1 Reply

Your possibilites here could be the coolant temperature sensor, oxygen sensor, injector/s or the fuel pressure regulator leaking or the fuel return line is clogged and causing the fuel pressure to be excessive
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Saturday, September 18th, 2010 AT 3:19 AM

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