Lots smoke out of exhost pipe

Asked by Mar 05, 2017 at 02:34 PM about the 2007 Alfa Romeo 159 Sportwagon 1.9TD Lusso

Question type: General

Lost of smoke

1 Answer

1,220

The smoke you're getting from the exhaust could be down to a whole host of different problems XJS_40. Worst case scenario is a blown turbo... does the car still accelerate well, if so then it's probably not the turbo. One common cause could be a split intake hose or boost pipe - check all the pipes carefully, they can often split underneath where it's not immediately obvious. Other possible causes could be injectors, the EGR (exhaust gas recirculation) valve, a faulty MAF (Mass air flow sensor) or a faulty temperature sensor. Generally, smoke shows that there is too much fuel being injected into the cylinders and if any of the above components are faulty they could confuse the car's ECU into injecting too much fuel. Do you have any more information on the smoke you're experiencing? Is it all the time, or just under acceleration? Is it white or black? Has the car been regularly serviced? Has it been modified in any way or is it standard?

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