Can worn piston rings trigger Antipolution Warning

  • Geoff675
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2 months 2 weeks ago #202105 by Geoff675
I have a peugeot 308 1.6 vti non turbo 2010. The engine is the same as a mini. The antipolution light is coming on and the car goes into limp mode. If i turn off the engine, take the key out and restart it it runs fine, but the warning light stays on. I have been told by the peugeot gagage that the piston rings are worn on cylinder 3 and this is triggering the warning light. The car does use a bit of oil but not in my view excessively. I have checked the spark plugs and sure enough cylinder 3 is blackened, all the others are fine.

Do you think that the Peugeot mechanic is correct.

Can the piston be removed while the engine is still in the car by removing the sump and cylinder head, loosening the conrod and pushing the piston up.

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2 months 2 weeks ago #202109 by foreigntec
Not sure what engine it was but think it was The non turbo one that had a tsb (technical bulletin) where you update The ecu change sparkplugs and clean valves becuse of excsessive sot. Mayby not so helpfull but common on citroen in europ a brand i worked for. The offical failure mode to warrenty The repair was. Anti polution light, porr preformens,sparkplug failure and engine stop when driveing. It was a very big issue atleast in my region/country (sweden) they would warrenty it. Mayby not so helpfull but i rarly seen big fauilers of PSA engines. But if it is a worn piston ring it is more cost effektiv to change engine it takes less time and less likley to damage or improperly repering the engien. ( i know my english is bad but i am working on it :)

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