alokkataria Posted February 8, 2012 Share Posted February 8, 2012 Hello, I have 2001 LS430 with 106k miles on it. This morning all of a sudden I heard knocking sound under the hood and lots of white smoke coming from the exhaust. I turned off the car immediately and am planning to towe it to a garage in a couple of days. Any ideas on what it might be. How serious might it be etc? Thanks for the advice. Regards, -Al Quote Link to comment Share on other sites More sharing options...
landar Posted February 9, 2012 Share Posted February 9, 2012 Might be as serious as a heart attack. Thats what I would have had if mine did that. White smoke 'usually' means coolant or power steering fluid being combusted. Maybe a gross leakage into a cylinder causing knocking? As a start, carefully check and note all of your fluid levels to see if one is very low. Check the timing belt. Has it recently been changed? Quote Link to comment Share on other sites More sharing options...
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