26/08/2026
“It’s not a major problem.” Then we removed the engine. 😅
It looks dramatic, but there’s a reason behind it.
This BMW X3 with the N57 3.0L diesel engine came in for timing chain work. As these engines age and accumulate kilometres, timing chain wear can become an issue and may lead to abnormal noise and, if left to deteriorate, more serious engine problems.
The challenging part is the location.
On the N57, the timing chain system is positioned at the rear of the engine, making access a much bigger job than many owners might expect. For this X3, the engine was removed so the three timing chains, guides and tensioners could be properly replaced.
But once the engine was out, we found something else.
There were also signs of oil leakage around the Oil Filter Housing / Oil Cooler area.
Since the engine was already removed, it made sense to address the confirmed leak at the same time rather than leave it and potentially pay for significant labour again later.
That doesn’t mean replacing everything simply because “we’re already in there.”
Our approach is to identify what actually needs attention, explain why, and use the opportunity to address confirmed issues where it genuinely saves the owner from duplicated labour later.
Sometimes a repair looks much scarier than the problem itself.
What matters is understanding why it needs to come apart, what we find once it does, and what actually needs to be repaired.
GM Auto Mechanic
📍 27 Bailey Crescent, Southport QLD 4215
📞 0435 885 888
💬 Contact us to book an appointment or discuss your vehicle.