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3-Series (E21, E30) Chat relating to the BMW 3-Series from 1975-1983 and 1984-1991 line. Specific models: BMW 315, BMW 316, BMW 318, BMW 318i, BMW 320/4, BMW 320i, BMW 320/6, BMW 323i, BMW 320i. E30 Family models include: BMW 325e, BMW 325i, BMW 325is, BMW 325ix.

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Old 08-16-2009, 06:08 PM   #1 (permalink)
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Unhappy Engine Turns But Will Not Fire

Can anyone help with this problem. My E30 320i 1991, will turn over but will not start, it fails to fire. On number 1 lead, there is a sensor lead which goes towards the flywheel area, part of this has melted would this be the cause. What exactly is this lead, and if not problem HELP!
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Old 08-16-2009, 07:58 PM   #2 (permalink)
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are you talking about the crankshaft sensor? If it is damaged, yes, that contributes to you NO-START condition.
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Old 08-17-2009, 03:41 PM   #3 (permalink)
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If you are not getting any spark from the coil, then it is a RPM/Crank sensor.
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Old 08-18-2009, 04:59 AM   #4 (permalink)
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Thanks for replying. I am getting a spark to my spark plugs. The engine turns but will not start. I have petrol, so do not understand why it will not run. I have changed distributor, rotor arm, spark plugs, checked idle valve control O.K. any suggestions.
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Old 08-18-2009, 08:34 AM   #5 (permalink)
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Is there any evidence of fuel on the plugs ??? if not its either your fuel pump or fuel filter blocked or the camshaft sensor.
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Old 08-18-2009, 10:16 AM   #6 (permalink)
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Can you tell me where the fuel pump relay is located ?, 6 cylinder 320i 1991 e30
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Old 08-18-2009, 10:39 AM   #7 (permalink)
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Relay should be in the fuse box, and it should be a big long/tall black one.
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Old 08-18-2009, 11:26 AM   #8 (permalink)
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You should be able to hear the fuel pump kick on with the key on engine off. I don't have my repair manuel or else I would be able to help.
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Old 08-18-2009, 02:41 PM   #9 (permalink)
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There is no petrol on spark plugs, and there is not tall black relay in my fuse box, i have the Motronic system, so is it the middle relay orange?
I cannot hear the fuel pump at all, so would it be the relay or the pump.
Thanks to all replies
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Old 08-18-2009, 03:31 PM   #10 (permalink)
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have you fixed the melted/damaged part?
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