Don Don Posted May 20, 2009 Share Posted May 20, 2009 Hi all, First time on this forum. Sorry to start with a question but I have a problem with my 2001 TD4 which as I have to travel a few hundred miles soon I feel needs sorting now. On starting I get a cloud of white smoke which carries on for approximately five miles and reoccurs when stationary at a junction for a couple of minutes. On pulling away I leave a smoke screen behind. On subsequent starting ie engine still warm I again get white smoke. Seems a little short of power too. Was serviced last week but not fuel filter. have tried a search on here but nothing seems to match. Forgive me if I have missed another thread. Any help would be much appreciated. Thanks in anticipation. Don Quote Link to comment Share on other sites More sharing options...
dann Posted May 21, 2009 Share Posted May 21, 2009 Hi Don, White smoke is usually caused by poor combustion and is most common after cold start due to glow plug probs but as yours happens also when the engine is warm it won't be a glow plugs issue. That leaves fuel contamination, coolant problems, injectors or low fuel pressure in the high pressure common rail. As you don't mention hard starting or engine misfire when idling it is probably not a single injector failure. Try cleaning the electrical connections: a. High pressure fuel sensor located at the battery end of the common rail. b. High presssure regulator located just left of starter on back of HP pump. I have taken Fuel pressure signal voltages from an identical engine which is operating normally: High pressure sensor: voltmeter connected between blue/black cable and earth. Ign 'on' engine off = 0.5v Engine idling = 1.28v approx 3000rpm =1.96v approx Take care when the engine is running. Good luck.Dann.. Quote Link to comment Share on other sites More sharing options...
dann Posted May 21, 2009 Share Posted May 21, 2009 P.S. A new fuel filter is always worth a try as they cost little and often improve performance.D.. Quote Link to comment Share on other sites More sharing options...
EggNChips Posted May 25, 2009 Share Posted May 25, 2009 P.S. A new fuel filter is always worth a try as they cost little and often improve performance.D.. I'll second that, always the first port of call is the fuel filter. try the leak off pipes, makes sure they're not leaking,....... Any sign of diesel leakage from the pump? I think air is getting into the pump and it could be the front seal. Quote Link to comment Share on other sites More sharing options...
Don Don Posted May 27, 2009 Author Share Posted May 27, 2009 Hi all, Thanks for your replies. Since I originally posted I have changed the crankcase filter... makes you cough a bit at £26.....and this seems to have solved the problem!! Seems to me after reading the threads on here that most things revolve around this very small and expensive component. Again thanks. Cheers Don Quote Link to comment Share on other sites More sharing options...
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