skirky dave Posted October 12, 2017 Share Posted October 12, 2017 Ok, the following is from a Land Rover F.A.Q article i just happened to come across. I'm a little confused by what the editor means,.. anyway here goes 2.25L Diesel Engines Original Author: Mike Rooth (M.J.Rooth@lut.ac.uk) Running the Engine As with all diesels,starting must take place with a wide open throttle. Indeed the original Owners Manual specifies this. Since diesels require a copious amount of air,particular attention should be paid to keeping the air filter clean,and the airways unobstructed. S11,11A,and 111 models have a hand throttle,which can be used to raise the tickover on cold mornings until the engine has warmed through ............................................................................................................................................................................. ( Q, 1) Does this mean, before starting the engine you should floor the accelerator If so,.i was always led to believe that you DON'T touch the accelerator until the engine has fired up. .............................................................................................................................................................................. Second thing i read which is a little confusing. If it is necessary to remove the cylinder head,do NOT be tempted to have it skimmed.This should not,in any event,be necessary,since the head is a large and rigid iron casting,and not,to the writers knowledge,unduly given to warping. Skimming the head will(not may,but will) result in the aluminum"hot spots" recessed and pegged into the head falling out in service.When this occurs,the engine will be a write off.Head overhaul is a specialist job,and must be treated as such.This danger cannot be over emphasized. The cylinder head,when returned to the engine*must* be torqued down twice. When the writer rebuilt his engine he bought a head gasket advertised as being such that it only needed torquing down once. However,the firm from which it was bought said that they used this gasket,but even so,they torqued their heads down twice. Start the engine and run it for about twenty minutes at fast idle until warm,shut down,remove the injectors,torque again,replace injectors, bleed fuel system,and run.Yes,it *is* a fiddle,and yes,it *is* worth it. ( Q, 2 ) So, what happens if your hot spots need replacing, little confused by the meaning/ interpretation on this one. In my previous post i have just had new hot spots fitted. The cylinder head must be skimmed . Mine is the 2.5 N/A but the same head as far as i know ........................................................................................................................................................................... Quote Link to comment Share on other sites More sharing options...
steve b Posted October 12, 2017 Share Posted October 12, 2017 ............I think the fact that he describes the hot spots as aluminium is enough to suggest that there may well be no correct information in that at all. Steve b Quote Link to comment Share on other sites More sharing options...
skirky dave Posted October 12, 2017 Author Share Posted October 12, 2017 Hi steve b, Mmm, yes it's a little confusing and thank god it's not just me, but what about the Open full throttle bit ??. Quote Link to comment Share on other sites More sharing options...
skirky dave Posted October 12, 2017 Author Share Posted October 12, 2017 Oh, i see what you mean, as in disregard all the information. Derr!!. Quote Link to comment Share on other sites More sharing options...
steve b Posted October 12, 2017 Share Posted October 12, 2017 The only time I find that holding the throttle wide open helps is when bleeding a stubborn DPA IP by cranking with the injector pipe top nuts cracked off , otherwise given that everything is operating correctly a cold start shouldn't need any throttle , with the 2.25 / 2.5 diesels it does help to crank the engine for a few seconds to warm the air in the bores a little before doing the normal preheat when it's really cold . cheers Steve b Quote Link to comment Share on other sites More sharing options...
skirky dave Posted October 12, 2017 Author Share Posted October 12, 2017 Yep, that's the way i do it in winter. Get it started first then apply the hand throttle for a couple on minutes to help warm thing up. I just thought, by what he was saying, ooh have i been doing it wrong all these years but apparently not. Quote Link to comment Share on other sites More sharing options...
skirky dave Posted October 12, 2017 Author Share Posted October 12, 2017 There is, however,..someone on youtube ( Land rover series 3 88" 2,25 diesel cold start) Red land rover with B/W CAT, who starts his series 3 in this exact fashion with the addition of other switches, which, i can only think is for keeping the glow plugs on for a few extra seconds AFTER the engine has started. Have a look Steve, it's a bit different!. Quote Link to comment Share on other sites More sharing options...
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