General Motors trademark referring to a series of emissions technologies that were implemented into a range of engines produced for GM vehicles. These are both gasoline (petrol) and diesel engines. ECOTEC equates to "Emissions Control Optimization TEChnology".

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Malibu turns over, does not start

2005 Malibu (Classic, fleet version) with 2.2 L Ecotec four-cylinder engine fails to start. It turns over, and scattered weak pops indicate that there’s rudimentary combustion going on, but it does ...