six6six Posted June 3, 2008 Report Share Posted June 3, 2008 I have an 03 deville and every once and a while when i start it up i get some white smoke once at night and once during the day when the car was all ready warm . any ideas ? as to what can cause this and one more thing the other day i left from work no smoke but when i got to the stop light and waited for the green the car just died started up fine and drove off Link to comment Share on other sites More sharing options...
BodybyFisher Posted June 3, 2008 Report Share Posted June 3, 2008 Check your oil level to see if its high and check for codes set by the PCM, to see if you have any issues like crank sensors, etc Pre-1995 - DTC codes OBD1 >> 1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/ Cadillac History & Specifications Year by Year http://www.motorera.com/cadillac/index.htm Link to comment Share on other sites More sharing options...
six6six Posted June 3, 2008 Author Report Share Posted June 3, 2008 Check your oil level to see if its high and check for codes set by the PCM, to see if you have any issues like crank sensors, etc no pcm codes and oil is fine Link to comment Share on other sites More sharing options...
lothos Posted June 3, 2008 Report Share Posted June 3, 2008 I had white smoke on startup. The smoke smelled heavily of fuel. Take off your oil filler cap and see if it smells like gasoline. My issue was a leaking injector. Another cause might be a bad Fuel Pressure Regulator (FPR). There might be other causes too, but if your oil smells like fuel it's an injector or FPR. WARNING: I'm a total car newbie, don't be surprised if I ask a stupid question! Just trying to learn. Cheers! 5% discount code at RockAuto.com - click here for your discount! Link to comment Share on other sites More sharing options...
John Wicz Posted June 3, 2008 Report Share Posted June 3, 2008 Any milky color on the bottom side of the oil filler cap or on the dipstick? Link to comment Share on other sites More sharing options...
Ranger Posted June 4, 2008 Report Share Posted June 4, 2008 Have someone start it while you stand behind it and get a good whiff. White smoke is either coolant (steam) or unburnt fuel vapors (gas). It should be very easy to differentiate. Link to comment Share on other sites More sharing options...
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