nisfan 836 Posted July 10, 2017 Share Posted July 10, 2017 I'm nearing the final stage of getting the xud9te? engined 305 ready for an mot. While it's not an mot phail there's a lot of clag on start up and a slight misfire, after about 30 seconds or so it's gone and it runs fine.Was just looking for any ideas on what it could be? Glow plugs? Injectors?Ta Link to post Share on other sites
bramz7 8325 Posted July 10, 2017 Share Posted July 10, 2017 So my ZX smoked like buggery on start up and it went when the glow plugs were changed.And it misfired. Link to post Share on other sites
artdjones 4308 Posted July 10, 2017 Share Posted July 10, 2017 Also could be one or more injector nozzles leaking diesel into the cylinders overnight.Probably nothing to worry about if there isn't excessive smoke when the engine is warmed up. cpjitservices 1 Link to post Share on other sites
Lacquer Peel 17135 Posted July 10, 2017 Share Posted July 10, 2017 TADTS. Link to post Share on other sites
jonathan_dyane 1702 Posted July 10, 2017 Share Posted July 10, 2017 Might be worth checking the valve clearances if you can be arsed... Link to post Share on other sites
nisfan 836 Posted July 11, 2017 Author Share Posted July 11, 2017 I was going by FOADS many diesels which havent smoked at all, its supposed to be a low mileage engine. Link to post Share on other sites
derskine 2263 Posted July 11, 2017 Share Posted July 11, 2017 Some prime clag.Mine doesn't smoke at all either. Did you not reckon the pump had been messed with? Link to post Share on other sites
dean36014 3239 Posted July 11, 2017 Share Posted July 11, 2017 Also a slight airleak will cause a misfire and smoke on start on start up. Both my xud's do it, and both fast passed on emmisions mot time. Link to post Share on other sites
cpjitservices 1937 Posted July 11, 2017 Share Posted July 11, 2017 Also could be one or more injector nozzles leaking diesel into the cylinders overnight.Probably nothing to worry about if there isn't excessive smoke when the engine is warmed up.This is what mine does, smokes like a chimney when I start it and idles lumpy for about a minute. I suspect as you say Diesel leak into Cylinders. Link to post Share on other sites
Lacquer Peel 17135 Posted July 11, 2017 Share Posted July 11, 2017 Could be poor injector spray pattern too, indirect injector nozzles are fairly easy to set up and replace. I guess it hasn't had a good run in ages. Link to post Share on other sites
DodgyBastard 21168 Posted July 11, 2017 Share Posted July 11, 2017 Glow plugs. Sent from my F5321 using Tapatalk Arthur Foxhake and alf892 2 Link to post Share on other sites
Arthur Foxhake 2352 Posted July 11, 2017 Share Posted July 11, 2017 Agreed. Link to post Share on other sites
kee616 41 Posted July 11, 2017 Share Posted July 11, 2017 On xuds it common to replace the black hose from the top fuel filter to the fuel pump with a clear piece of hose, as said a air leak could cause this and you'd be able to see any air getting in Lacquer Peel 1 Link to post Share on other sites
mat_the_cat 10979 Posted July 12, 2017 Share Posted July 12, 2017 Which glow plug relay are you using? The XUD9TE needs the glow plugs kept on for 30 seconds or so after a cold start, otherwise it'll smoke like buggery...Check by keeping the glow plugs on with a jump lead for a bit after starting, see if it sorts it. Link to post Share on other sites
Bobthebeard 6534 Posted July 12, 2017 Share Posted July 12, 2017 One faulty glowplug? White ish smoke being un burnt diesel, hence the misfire? Link to post Share on other sites
nisfan 836 Posted July 12, 2017 Author Share Posted July 12, 2017 I'll replace the glow plugsonce it's moted, it starts fine when the starter decides to work! Link to post Share on other sites
mat_the_cat 10979 Posted July 12, 2017 Share Posted July 12, 2017 Before you spend any money and time changing anything, check the glowplug relay! The donor vehicle would have had a timer relay which keeps the glowplugs on (even though the light itself goes out) after starting - unless coolant over a 60 degrees C or throttle is opened past a certain point. You will probably still have the switch on the fuel pump and the temperature sender for the glowplug relay on the thermostat housing. If you're still using the 305's glowplug relay (which goes off immediately after starting) then this could well explain the smoke, and it's free to check Rave 1 Link to post Share on other sites
nisfan 836 Posted July 14, 2017 Author Share Posted July 14, 2017 Thanks for all the advice, the glow plug light goes out on the clocks but you have to wait a further 5 seconds before hearing the relay turn off, its more than likely still the 305 relay Link to post Share on other sites
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