Vehicle & Technical > Discovery
Overheating 300tdi
discograham:
--- Quote from: "bilge rat" ---just thinking that but i'd take the multi belt off so the pump aint working and brim the header tank .then any bubbles will most definatly be air , cant run for long like this though. failing that ,long winded this. make some sort of plug to fit in where the glow plugs fit one at a time set that cylinder to tdc lonck the engine in gear brake on or something then pressure the cylinder with air again with the expantion tank brimmed, you would have to reduce airline pressure though . do each cylinder see iff you get any bubble that way . you woud even know which cyl has the leak iff any ?. alan.....
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Will remove belt in a moment.. ( bacon roll first... :wink: .. I need the energy ! ) and try that... as for the pressure test... I understand totally your suggestion... just got to make up something to block up the glow plug ports... or persuede someone to bring a pressure tester around.... :shock:
discograham:
--- Quote from: "bilge rat" ---Had it running yesterday with cap off... some water comes out, as it should do, then it levels off and movement is there so water pump is doing it's job... but no bubbles or excessive pressure from header...
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you say no pressure but it blew a pipe off, is your expantion bottle cap o.k ment to release pressure at a certain point ?. cheap to try . alan......[/quote]
Good point... bacon roll can wait... checking cap....
bilge rat:
while im thinking of you with that bacon roll , i think you can iff your carefull pull them caps apart. theres a little spring and ball arangement iff i remember. keep an eye on how it comes apart, enjoy the roll :wink: .alan.....
discograham:
Here's another question...
The hose from the bottom of the header tank runs into a non return valve... at least that's what I assume it to be... that is what "blew" earlier this morning... the "valve" is completely in two... could the problem have been that valve all along ? Or maybe that was the next weakest point to give....
bilge rat:
not a clue with that one just had a look at mine see what you mean. try one .they dont look to sustantial but to blow one of them your back to excess pressure, which your cap would have released. even iff the head gasket had gone id have thought the cap would blow before that. easy and chepest way is going to be to get a new cap an valve . just keep an eye on the pressure then. alan......
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