92 SC300 Pouring white smoke - Club Lexus Forums


92 SC300 Pouring white smoke

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Old 07-19-14, 04:44 PM   #1
SCShawn
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Default 92 SC300 Pouring white smoke

So a little back story on when this happened. I was driving home then I noticed my CD player and gauge cluster would cut on and off after I would go over a bump. When I got home I took a look underneath my driver side fender and saw that the tire had chewed up a couple of the wires. So I decided to relocate and tape up the wires that had been damaged.
I go to start the car and I realize that I no longer hear the full pump prime up, and sure enough I was not getting any fuel to the car. I figured that the Fuel pump ecu had taken a dump on me so I did the 12V mod and bypassed the whole thing all together. Now the fuel pump is working.
Now when I start the car, it just dumps out white smoke and when I smell it, it smells like gas. I checked my oil also, smells very gassy. So I figured, well ****, I guess the ECU took a dump on me also. So i went ahead and ordered another ECU. I was really hoping this will fix everything, but unfortunately nothing really changed. So I ordered ANOTHER ECU just in case this one was a dud. Same thing, the car just dumps out lots of white smoke.
I decided to just pull some codes off of the car so I jump TE and E and I get code 41 and 55. Which is TPS and Knock Sensor respectively.
I just feel like a bad knock sensor would not do this, nor a TPS... am I wrong? I am curious if anyone has also had similar problems from chewing up that harness under the driver fender. It just seems like a lot to go wrong from a couple of wires.

Also I would like to note, took out the spark plugs, everything looked fine, except on cylinder 3 it smelt heavily of gas and was wet. Any ideas at all?
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Old 07-21-14, 07:32 AM   #2
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you have a bad headgasket!
is water coming out of your exhaust?
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Old 07-21-14, 08:51 PM   #3
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Use sea foam.
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Old 07-22-14, 05:50 AM   #4
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Quote:
Originally Posted by luke5656 View Post
Use sea foam.
seafoam wont help.
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Old 07-22-14, 09:06 AM   #5
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Blew a headgasket without a doubt....the only way to get white smoke is if coolant is getting into your cylinders
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Old 07-22-14, 11:51 PM   #6
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Turned out the third ECU was bad. I got it all figured out.
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