1.5T The Rebuild Journey of the L15C9（Non-Si） Engine

[PangziXin]

Still in the break-in period, I encountered a sudden P0028 fault during slow city driving. I noticed the DIFP dropped to 0.4 bar—sure enough, the high-pressure fuel pump had failed. When I removed the old 6B2 pump, I was surprised to find it had actually broken, which is extremely rare. Since the 6B2 pump I was using came from a salvaged vehicle, it's unclear whether the failure was due to its prior condition or a mismatch with the camshaft. I believe the latter is highly unlikely. I replaced it with another used 6B2 pump and continued with the break-in process.

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[Cueyo]

Still in the break-in period, I encountered a sudden P0028 fault during slow city driving. I noticed the DIFP dropped to 0.4 bar—sure enough, the high-pressure fuel pump had failed. When I removed the old 6B2 pump, I was surprised to find it had actually broken, which is extremely rare. Since the 6B2 pump I was using came from a salvaged vehicle, it's unclear whether the failure was due to its prior condition or a mismatch with the camshaft. I believe the latter is highly unlikely. I replaced it with another used 6B2 pump and continued with the break-in process.

Do you have any idea of the forces that move caused it to break? It just seems like such a weird spot to have breakage.

Great thread btw, but holy jump scare with the clubbed fingernails. You should get those checked out asap!