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No spark, no fuel return

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    No spark, no fuel return

    So nearing the end of my swap I have a few problems

    Engine Cranks
    Fuel input but no return (leaks out exhaust ports)
    No spark coming from coil but coil has voltage

    Im thinking its an ECU problem

    Ideas?

    #2
    Come on guys someone has to have another idea! I think its the DME too, we're going to check and see if the injectors are held on with a LED test light, and verify that the coil is getting a pulsed signal (or rather, not getting it). I feel its a DME being that is the only way the injectors can flood as they are...
    :wgaf:

    PNW BMW Crew ///
    '93 325iS
    '99 528iT

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      #3
      maybe i missed something but there seems to be a serious lack of information. what ecu are you using? (hopefully the one which came with that motor originally)are you sure the harness was wired correctly (difference between us and euro as well) i mean need something to go off of here. it's kinda like saying "my car won't start....it's blue....what's wrong with it? did everything work before the swap or was this a basket case you had to put back together? definetly need some details man. in the mean time. keep it simple and double check everything! see if you can borrow an ecu from someone if you think that's the problem. sorry can't help ya more at this point

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        #4
        Check for switched voltage at the coil and for that matter test the coil to see if its any good. i had a bad connection to my coil when i first tried to start mine

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