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1.5 Blue HDi PSA Engine Problems

Model: (Various brands) Various
Part: Engine

Video tutorial

This video explains the main problems of the PSA 1.5 Blue HDi engine: first, you will hear the characteristic noise of an elongated chain, which should be a cause for immediate concern; in fact, from January 2023 production, vehicles are fitted with a larger chain and new exhaust valves to prevent the camshaft chain from breaking, even with low mileage.

Owners of pre-modification vehicles must pay close attention to maintenance, and if the chain breaks, you will have to fit the 7 mm pre-modification chain, as the larger one would be impossible to install on that type of engine.

Additionally, the recommended oil has been changed from 0W30 to 5W30, which is thicker and has different characteristics. Repairers outside the official network may not be aware of this modification, so ensure you check what oil is being used in your car.


Updated on 14 October 2026 by ScegliAuto


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by ScegliAuto

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