DrewinBots Posted December 28, 2010 Share Posted December 28, 2010 Hi, I have been learning from this forum for some time, so thanks. I live in a very remote part of Botswana, and currently rebuilding a 1998 300 tdi Discovery, thanks to lots of bits bought from Turner Engineering. The question I have is how hard should a injector pump be to turn. I used to work on trucks, and never felt the resistance that i have with my pump. I can turn it, just, with my hands and the sprocket on. Is this normal? Thanks Drew Quote Link to comment Share on other sites More sharing options...
fozsug Posted December 29, 2010 Share Posted December 29, 2010 Hi, I have been learning from this forum for some time, so thanks. I live in a very remote part of Botswana, and currently rebuilding a 1998 300 tdi Discovery, thanks to lots of bits bought from Turner Engineering. The question I have is how hard should a injector pump be to turn. I used to work on trucks, and never felt the resistance that i have with my pump. I can turn it, just, with my hands and the sprocket on. Is this normal? Thanks Drew Have you got the injector pipes connected and connected to the injectors, if so will be very hard to turn. If not has the pump stood "dry" for a time, if so pour some diesel into the inlet to lubricate. If not sounds like pump maybee seized Quote Link to comment Share on other sites More sharing options...
DrewinBots Posted December 30, 2010 Author Share Posted December 30, 2010 Hi. I don't think it is seized, but probably needs to see the Doctor. Since buying the Disco I have had nothing but trouble. Engine overheated and seized 500km after buying it. (More than likely my fault) Bought a second hand engine that was problematic from the word go. As I was due back at work the next day, we had to drive it 800 km's. There was diesel getting into the sump, and I had to change the oil every 100km's, and no guts whatsoever. When I got back home I have stripped it. It appears that they used the wrong size head gasket, and all piston crowns were badly marked where the valves were hitting them. The injectors were also hitting the points in the combustion chamber, so I am guessing that the injectors are all stuffed, and that is how the diesel was getting into the block. It all turned pear shaped when the cam shaft bolt snapped and the cam stopped turning. How it made it that far is still a testament to the resilience of a 300 tdi. So I am busy rebuilding it now, but as I live a 30 minute flight from anything resembling a spares shop, and things not quite going to plan, it is tough going. Just discovered that the pistons that I imported are the standard size, but way too small. Back to the drawing board.... Cheers Drew Quote Link to comment Share on other sites More sharing options...
JimAttrill Posted December 30, 2010 Share Posted December 30, 2010 If your standard pistons are too small then your engine has been rebored or the the pistons are rubbish. The normal way here in SA is to use standard pistons as they are cheaper and have the block bored out to fit dry liners (don't tell LR) and then have those bored out to standard size. The liners are easily available from Britpart or whoever in the UK and here are available from CCA at +27 11 7080326 speak to Ruan I know he posts them. (I have a set in my garage plus a set of Std KS pistons waiting for my overhaul). Ruan will sort out all your 300Tdi spares problems. (he and his helper CP have a Tdi each so they know the engine well) Quote Link to comment Share on other sites More sharing options...
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