The M272 uses plastic triangular actuator levers on the front of the intake manifold to control internal air flaps. The plastic brittle-hardens from engine heat and snaps.
Q: What are the common issues with the M272 engine? A: Common issues include oil leaks, timing chain problems, and engine noise.
for this engine, such as the balance shaft gear or intake manifold flaps? M272M273 Manual Engine PDF - Scribd
The DOHC (Double Overhead Camshaft) cylinder heads are cast from aluminum and house 4 valves per cylinder. Mercedes Benz M272 Engine Parts Diagram
On 2004–2008 models, the sprocket teeth wear down smoothly, causing timing codes (P1200/P1208).
: It utilizes continuously variable timing for both intake and exhaust, allowing for a 40-degree adjustment to optimize torque.
The parts diagram will show the balance shaft as an assembly with two eccentric weights. The problematic sprocket is directly behind the timing chain. When ordering parts, later diagrams show a revised shaft with a hardened sprocket (part # 272 030 11 05). The M272 uses plastic triangular actuator levers on
As a V6 engine, the M272 rests on fluid-filled engine and transmission mounts. Over years of heat cycles and engine torque, these mounts collapse and leak their hydraulic fluid. Collapsed mounts transmit heavy vibrations directly into the vehicle's cabin. Sourcing Parts and Reference Tools
Plastic screw-on cap for the cartridge filter.
The M272 features an aluminum engine block with silicon/aluminum lined cylinders to reduce friction and weight. A: Common issues include oil leaks, timing chain
Located at the rear of the engine block near the flywheel. If this fails, the engine will crank but will not start. 6. Cooling & Lubrication System Parts
Leo ordered the special timing tools—two metal bars that locked the camshafts into a precise 40-degree rotation. The story's twist came when he removed the oil pan. Peering up, he saw them: tiny, glittering flakes of hardened steel, like metallic snow. The balance shaft sprocket's soft original coating had worn off, and its hardened teeth had begun eating the crank sprocket alive.
Aluminum plate cooler bolted to the housing. Common M272 Failure Points to Spot on a Diagram
Technical diagrams like those found on Benzbits often break down the engine into these essential sections: