gruntus Posted October 12, 2006 Share Posted October 12, 2006 Gents, My dad owns a 300TDI Disco which has developed a starting problem. It is lazy at starting first thing which he first put down to either duff glow plugs or battery. He changed the glows plugs which were the cheapest option (neaded done anyway) no luck..... He got a loan of a heavy duty battery which cranked the engine over well but still no luck... We can confirm that there is a good voltage at the glow plugs and have tested them individually so we don't think it is the preheating side of things. He has noticed however that if he puts his foot down hard on the accelerator on initial start up it fires up pretty much immediately. He thinks it may be the injectors or the pump that are the problem. Before he starts forking out a load of money do you have any ideas? There are no problems with it starting once it has been running. I eagerly await replies from the wise, seasoned ones Grant Quote Link to comment Share on other sites More sharing options...
simonb Posted October 12, 2006 Share Posted October 12, 2006 Sounds like what my Def 300Tdi was doing, after doing glow plugs, stop solenoid and knowing the battery was ok, it proved to be the lift pump... make sure you get the olives for the fuel lines when you change the pump. But check the fuel lines aren't rusty where they leave the top of the tank ubder the loadbay floor. There may be a pin hole in them allowing air to be drawn in. Quote Link to comment Share on other sites More sharing options...
Turbocharger Posted October 13, 2006 Share Posted October 13, 2006 If the 300Tdi is in good nick, you shouldn't need the glowplugs at all. Mine aren't even wired in, I find below -5°C it turns over five times instead of three before it catches. While it's cranking 'lazily', is there any smoke? If not, there's probably no fuel getting to it. If you crack an injector line you'll see how long it takes before fuel spits out. Quote Link to comment Share on other sites More sharing options...
western Posted October 13, 2006 Share Posted October 13, 2006 take the fuel stop solenoid out,remove the spring & plunger, refit the body/reconnect & try it, if it starts OK, then a new solly is required, in the tech archive is a diesel & petrol diagnosis chart that maybe useful. Quote Link to comment Share on other sites More sharing options...
gruntus Posted October 13, 2006 Author Share Posted October 13, 2006 thanks for the help guys. The lift pump was changed two weeks ago with new olives fitted as well. He mentioned a fuel filter upline that looked a bit damp which he will fix next (air gettting in maybe). Thanks again Grant Quote Link to comment Share on other sites More sharing options...
GBMUD Posted October 13, 2006 Share Posted October 13, 2006 When you say it is lazy at starting, does it crank over fast enough? Perhaps not if a new bettery was tried? Any problem with poor cranking could lie with the starter motor or the live connection to it - or with the often ignored earth connection. Chris Quote Link to comment Share on other sites More sharing options...
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