HORROR Diagnose vom MOTORENBAUER! Billigster 335i NICHT zu retten

Summary

In this video, the speaker shares a detailed and frustrating journey of attempting to repair a BMW engine, focusing on issues like a defective crankshaft, problems with the conrods, and damaged injectors. Despite investing in numerous parts from AliExpress and original BMW components worth millions of euros, the engine remains in disrepair after several weeks. The crankshaft, initially thought to be slightly bent, could not be corrected due to its forged nature, resisting straightening attempts. Additionally, mismatched conrod weights and injector failures further complicate the repair process. The speaker expresses disillusionment with the project's progress and considers selling the vehicle as is, highlighting the challenges and financial strain of engine restoration.

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Q & A

What was the main issue discussed in the video?

The main issue discussed was the repair and challenges faced while fixing a BMW car, including a defective electric steering lock, issues with the crankshaft being slightly bent, and problems sourcing and replacing various engine parts.

What specific part was mentioned as being defective from AliExpress?

The script mentions 'AliExpress Blenden' as defective, which implies there were issues with parts (possibly trim or covers) ordered from AliExpress.

What was the condition of the crankshaft and how was it addressed?

The crankshaft was found to be bent by 0.15 mm and needed to be polished. The attempt to straighten it failed due to the limitations of the 60-ton press used, indicating it could not be corrected simply.

What were the challenges faced with the crankshaft replacement?

The challenges included the crankshaft being unsuitable for a straight replacement due to the specific screw hole pattern required for the dual-mass flywheel, and the difficulty in finding a compatible crankshaft due to the pre-facelift model specifics.

How did the narrator plan to address the injector issues?

The narrator mentioned receiving news that three of the injectors were broken, which added to the complications and costs of the repair process.

What issue was encountered with the connecting rods (Pleuel) and their replacement?

There was a problem with matching the weight classes of the connecting rods, as BMW specifies a maximum weight difference allowed among them, complicating the procurement of compatible replacement parts.

What was the outcome of attempting to fix the crankshaft issue?

The attempt to fix the crankshaft issue was unsuccessful, leading to the decision to sell the car as is, due to the inability to economically justify further repairs.

What did the narrator conclude about the cylinder head's condition?

Upon inspection, it was concluded that the cylinder head, especially the exhaust side, was significantly worn out and would require substantial repairs, including replacing the valve guides and possibly the valves themselves.

What was the narrator's sentiment towards the project by the end of the script?

The narrator expressed regret and sadness over the project, acknowledging it as a significant learning experience but ultimately a financial misstep due to the unanticipated complexities and costs.

What future plans did the narrator mention regarding other projects?

Despite the setbacks with the BMW repair project, the narrator mentioned moving forward with another project, focusing on making a car street-legal with a turbo upgrade, indicating a continued passion for automotive projects.