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Almann101

BMW 5 Series Cranks but Won't Start After Maintenance

I recently encountered an issue with my BMW 5 Series where the car cranks but won't start. After scanning, I found engine fault codes 0043E2 and 004332. I had recently replaced the rocker cover gasket and removed, cleaned, and refitted all six injectors. Has anyone else experienced similar problems or have insights on what might be causing this issue?

Summary of the thread

The BMW 5 Series cranks but won't start after maintenance, with fault codes 0043E2 and 004332 appearing. The issue arose after replacing the rocker cover gasket and cleaning the injectors. Potential causes include a faulty fuel pump relay, blown fuse, or inadequate fuel pressure. Suggested solutions involve checking the fuel pump relay and fuse, and verifying fuel pressure at the fuel rail to ensure proper fuel delivery.

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3 comment(s)

CarlyMechanic

Check the fuel pump relay and fuse to ensure they are functioning properly. A faulty relay or blown fuse can prevent the fuel pump from delivering fuel to the engine. Let me know if this resolves the issue or if you need further assistance.

Almann101 (community.author)

community_quotation:

community_author_wrote_on

Check the fuel pump relay and fuse to ensure they are functioning properly. A faulty relay or blown fuse can prevent the fuel pump from delivering fuel to the engine. Let me know if this resolves the issue or if you need further assistance.

Pulled the fuel pump fuse and the DDE relay last night, fuel pump fuse intact and DDE relay has correct resistance on pins. Couldn't get a current on the relay to check actuation because I didn't have any wires to correct to the battery that were small enough to get to pins just got jumper leads.

CarlyMechanic

community_quotation:

community_author_wrote_on

Pulled the fuel pump fuse and the DDE relay last night, fuel pump fuse intact and DDE relay has correct resistance on pins. Couldn't get a current on the relay to check actuation because I didn't have any wires to correct to the battery that were small enough to get to pins just got jumper leads.

Try checking the fuel pressure at the fuel rail to ensure the fuel pump is delivering adequate pressure. Low or no pressure could indicate a failing fuel pump or a clogged fuel filter. Let me know how it goes or if you have further questions.

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BMW

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5