Here's a look inside a Volvo 5 Cylinder engine, how it works, what caused it to fail and why inline 5 cylinder engines aren't that popular anymore!


The engine in this video was taken from a 2005 Volvo S40 and suffered from oil starvation and coolant mixing with the oil. In this video, the B5244S4 inline 5 cylinder engine is torn down to take a look and what caused it to fail, how it works, the component setup, a discussion on its integrated lubrication and PCV systems and engine balance.



Skip to the sections in this video:

0:00 Introduction
1:14 Teardown
7:54 Engine Lubrication
11:17 Positive Crankcase Ventilation System
13:57 Engine Balance


The Volvo B5244S4 is a modular design that scalable from inline 4, inline 5 and inline 6 applications on the same production line. It features an aluminum design, with a lubrication system integrating the valve cover and oil pan. The head is wide, having dual overhead cams situated far apart from each other. The version shown here is naturally aspirated and has variable valve timing on the intake side only. The valve-train is driven off a timing belt.



The cooling system integrates an externally mounted oil cooler, while the PCV system uses a unique oil separator to extract oil from the crankcase before venting it back into the intake plenum.



Make sure you maintain your vehicle so the engine does not become like this one! You can get replacement supplies and parts here:
Engine Oil:
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Oil Filter:
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Engine Coolant:
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3/8" Ratchet set for common repairs:
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OBD2 Diagnostic tools for scanning codes and engine lights:
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