Joe67 Posted July 17, 2014 Share Posted July 17, 2014 Hi new member, looking for help with first disco, I have a 93 200 tdi disco with 187000 miles, when first started it runs on 3 then as it warms up it runs on 4, when first started its normarly putting out white smoke then once warmed up dont really see it. If i hold the revs at 1500 rpm it puts out blue smoke, same if am driving around at about low revs/mph at times, see blue smoke So far ive replaced air filter oil filter oil fuel filter cleaned sedimentor changed glow plugs last night, only one out four were working, the inside of one came away from glow plug housing when trying to remove.. ( still to see if it makes much difference on start up ) ive tryed some injector cleaner, a few bottles now lol, hasnt helped Disco seems to pull ok, will do over 80 mph on a private road. Any helps appreciated, cheers Quote Link to comment Share on other sites More sharing options...
Marten Posted July 22, 2014 Share Posted July 22, 2014 As a broad rule of thumb for a diesel, white smoke is caused by water in the combustion areas and blue smoke is caused by burning oil. How do you know you are only using 3 cylinders on startup? Is there any evidence of water in the oil? (White goo inside the rocker cover filler) I would suspect a failing head gasket and possibly piston ring/cylinder bore wear. Valve condition could also be an issue. This might be obvious once you have removed the cylinder head! What do you know about the history of the vehicle? Has it had good regular maintenance? I have never used the glow plugs to start from the day I collected my vehicle from the show room! A worn engine is quite capable of giving you speed, but it might be a different story towing a heavy trailer. Quote Link to comment Share on other sites More sharing options...
DrRob Posted July 23, 2014 Share Posted July 23, 2014 Get the head off and do a proper inspection as Marten says or get a mechanic to do it Quote Link to comment Share on other sites More sharing options...
tuskar Posted July 23, 2014 Share Posted July 23, 2014 Good advice . Quote Link to comment Share on other sites More sharing options...
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