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Mend Heavy Black Smoke

is the ecu faulty?

an intermittent fault has happened . the vehicle seems to be over fuelling,,, heavy black smoke but sometimes clears. fuel consumption down to 20 m.p.g. poor starting when hot.

peter c
November 2010
Vehicles, CarsHeavy Black Smoke
Check the coolant temp sensor first.steve

steve
November 2010
the type of vehicle is a 1999 saxo 1.4

peter c
November 2010

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ECU Fault & Overfueling - Symptoms & MPG Loss