jonathankrause61

Peugeot 106 Running Rich

Hi, I'm having trouble with my 2003 Peugeot 106 (gasoline engine). It seems to be running excessively rich. I've noticed reduced power, the check engine light is on, it's running rough, fuel consumption is up, and it's jerking when I accelerate. I checked the spark plugs and air filter, but they look fine. Could this be a bad injector?

A 2003 Peugeot 106 is experiencing issues with running excessively rich, leading to reduced power, a check engine light, rough running, increased fuel consumption, and jerking during acceleration. Initial checks of the spark plugs and air filter showed no issues, suggesting a possible problem with the fuel injector. Another potential cause could be a faulty lambda sensor, which can be tested by unplugging it to see if the engine runs smoother. Ultimately, the problem was confirmed to be a defective fuel injector, which was replaced, resolving the issue.

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4 comment(s)

Rich mixture, check engine – injector likely. Lambda sensor could cause similar. Unplug it, see if anything changes.

Thanks for the quick reply. If I unplug the lambda sensor, what should I expect to change if that's the problem? Should the engine run smoother, or is there something else I should look for?

Smoother running. But with those symptoms, and mileage, injector is odds-on. Workshop time.

Thanks for the help. It turned out to be a defective fuel injector, just like you suspected. The workshop confirmed it and replaced it. The total cost was 515€. The car runs perfectly now.

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PEUGEOT

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106