Bmw m51 6 pot diesel - part 2

comfortablynumb Posted a lot Posts: 3,068	Bmw m51 6 pot diesel - part 2 comfortablynumb @comfortablynumb
	Nov 8, 2020 9:30:46 GMT Select Post Deselect Post Link to Post Back to Top
	And the saga continues Short story- blew up the original engine, 1999 model with plastic plenum and black injector plug on injector no4 The replacement engine is an earlier model with a cast alloy plenum, but of unknown origin although it’s another p38 lump Changed the no4 injector and the engine harness because the early stuff is not compatible with the later ecu etc New electric fuel pump, new fuel filter, new leakoff pipes, plenty of diesel in the tank Tried manually bleeding dozens of times, poor supply on a couple of injectors Ive heard that the injector pumps are coded to the ecu, but cant get a definitive answer on that Engine will kick and fire for about half a second and then just cranks again I'm leaning toward the injector pump either being faulty or not compatible with my ecu etc Any bmw gurus out there? TIA
	Last Edit: Nov 8, 2020 9:32:02 GMT by comfortablynumb

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giuliettaevo Part of things Posts: 453	Bmw m51 6 pot diesel - part 2 giuliettaevo @giuliettaevo
	Nov 8, 2020 20:35:44 GMT Select Post Deselect Post Link to Post Back to Top
	On my E30 which i converted to a E34 tds engine i once swapped the engine but i couldnt get it to run. I was also told that the ecu needs to match to the pump, seems there are different versions.


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welshpug Posted a lot Posts: 4,328	Bmw m51 6 pot diesel - part 2 welshpug @welshpug
	Nov 8, 2020 20:45:03 GMT Select Post Deselect Post Link to Post Back to Top
	being that late an engine/vehicle it will have some variant of bmw's ews anti theft system. I'm not sure about the coding, I thought the vp37 was quite a simple evolution of the ve, so quite a basic system. Enda ward at EndTuning may be able to help you, I have one of his chips in my e34 and he knows a lot about the various ecu's bmw have used.
	Last Edit: Nov 8, 2020 20:47:33 GMT by welshpug ZX 16v, 205 GTI. my ZX's project thread - retrorides.proboards.com/thread/151997/16v-project-pt2-power-upgrades

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comfortablynumb Posted a lot Posts: 3,068	Bmw m51 6 pot diesel - part 2 comfortablynumb @comfortablynumb
	Nov 9, 2020 6:24:49 GMT Select Post Deselect Post Link to Post Back to Top
	Thanks guys, I’ve also heard that the becm can loose its code over time, and since it’s been sat for over a year this could be part of it Time to call in the big guns methinks


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