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thomasflame4

Mini Countryman Cold Start Problem

My 2022 Mini Countryman is exhibiting poor engine running during the cold start phase. Vehicle starts poorly. Suspect a faulty cold start injector. Any experience with this issue? Is a defective injection valve the likely culprit?

Summary of the thread

A 2022 Mini Countryman is experiencing poor engine performance during cold starts, suspected to be due to a faulty cold start injector. The issue is characterized by hard starting and rough idling, which are indicative of potential fuel delivery problems. While injector cleaning was suggested as a possible solution, the problem was ultimately confirmed to be a defective injection valve. The resolution involved replacing the faulty injector, which successfully restored smooth engine operation.

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4 comment(s)

haraldkrueger89

Hard starting and rough idle point to fuel delivery issues. Have you tried an injector cleaning product? It's like a spring cleaning for your fuel rail. Might be worth a shot before diving into replacements.

thomasflame4 (community.author)

Mileage definitely puts injector failure within the realm of possibility. Think of it like this: cleaning might clear some gunk, but a failing injector is like a leaky faucet eventually, you need to replace it. A proper injector test will confirm, but sounds like a workshop visit is in order.

haraldkrueger89

Injector cleaning crossed my mind, but with that many km on the clock, could a simple cleaning really resolve a potentially defective injection valve? I'm leaning towards a more definitive injector test. What are your thoughts?

thomasflame4 (community.author)

Confirmed diagnosis of faulty cold start injector. Replacement including labor and injector test came to 515€. Running smoothly now, thanks for the input.

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MINI

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COUNTRYMAN