Running rough-white smoke
#1
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Running rough-white smoke
Replaced starter on my 1994 LS400. After buttoning up the engine cranked but was not starting. Finally go it to start but now white smoke billows out the exhaust an after about 15 seconds of idle a bubbling foam of what looks like a mix of gas and oil backs out the throttle body. What's going on? Car has 110,000 miles and original timing belt which looks frayed. Could engine have jumped out of time? How do I check to see if timing is correct?
Last edited by RA40; 09-08-13 at 10:42 AM. Reason: descriptive title
#2
Lexus Test Driver
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White smoke is burning coolant.
Rough running is likely the cause or byproduct of this. 110k is way past the service interval of the belt, and sounds like it is in dire need of replacement.
I'd check the timing and pull the plugs as a start. Post back and we can advise from there!
Rough running is likely the cause or byproduct of this. 110k is way past the service interval of the belt, and sounds like it is in dire need of replacement.
I'd check the timing and pull the plugs as a start. Post back and we can advise from there!
#3
Lexus Champion
Replaced starter on my 1994 LS400. After buttoning up the engine cranked but was not starting. Finally go it to start but now white smoke billows out the exhaust an after about 15 seconds of idle a bubbling foam of what looks like a mix of gas and oil backs out the throttle body. What's going on? Car has 110,000 miles and original timing belt which looks frayed. Could engine have jumped out of time? How do I check to see if timing is correct?
a frayed timing belt is one that is about to break, and removing all of the covers and checking the timing is about 40% of just doing the job entirely, so I would just do it!
you can get the complete kit to do it right with all real Toyota parts on ebay for about $190 which sure beats spending $700 in parts alone from the dealership, plus a lot of labor!
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Is it possible for coolant to enter intake through the EGR valve or the IAC valve? After 10 to 15 seconds of idle; foaming gas and coolant starts backing up out of the throttle body.
#7
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why don't you use my poor man's IAC valve and find out real fast if that is the problem!
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Think I am getting close to narrowing in on the problem. Checked my Power Steering level and it was half full. There is a line going to the front of the Intake housing from the power steering reservoir and I believe the fluid is being sucked in through there and mixing with the fuel thus the white smoke coming from the exhaust. Is this possible? Am I getting close?
#11
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Think I am getting close to narrowing in on the problem. Checked my Power Steering level and it was half full. There is a line going to the front of the Intake housing from the power steering reservoir and I believe the fluid is being sucked in through there and mixing with the fuel thus the white smoke coming from the exhaust. Is this possible? Am I getting close?
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