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E30 M50 crank no start suggestions

Discussion in 'DIY (Do-It-Yourself)' started by ckennedy2, Jun 8, 2025.

    • Member

    ckennedy2

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    Good afternoon everyone,

    Long time member first time poster here. I have a 1986 BMW 325es I have been wrenching on for the past 5 years now, and have decided attempt an m50 engine swap. The motor is from a 1992 BMW 325i (so no vanos, woohoo!) and I have the swap 95% completed. I am having this unsolvable wiring issue which is causing the car to crank but not start. I have a new ecu, wiring harness, coil and plugs, crank sensor, fuel pump, fuses and relays, and a maf. The fuel pump will run when jumped, but I am still getting no fuel out of the injectors, and no spark from the plugs. I am now out of hope for my technical abilities, and wondering if anyone in the ohio area can direct me on what to do next. I tried calling to local shops (larchmere imports and Koala motorsports) but neither of them were interested in taking on the project, so I am looking for someone who has completed the swap before to set me in the right direction. I am willing to pay handsomely for anyone able to get her running right! Thank you in advance for any suggestions.

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