This does sounds like you are having a problem with the injector but I want to ask if the plugs are OEM replacements becasue these engine are sensitive to plugs that do not fit the heat range. Here are some guides to help you confirm the problem and get it fixed.
This guide will help you test the injector
Here is an idea of what it will be like to change it out
The diagram below will show what replacing the injector will be like on your car.
Lightly lubricate the fuel injector O-rings with a couple drops of clean engine oil. Install retaining clips on fuel injectors. Push injectors into fuel injector rail until clips are in the correct position. Position fuel rail over cylinder head, and push rail into place. Tighten fuel rail mounting bolts to 11 Nm (100 in. lbs.) torque. Connect fuel supply tube quick connect fittings at the rear of intake manifold. Connect electrical connectors to fuel injectors. Install intake manifold plenum. Connect negative cable to battery. Use the scan tool to pressurize the fuel system. Check for leaks.
Check out the diagrams (Below)
Please let us know if you need anything else to get the problem fixed.
Sunday, December 3rd, 2017 AT 5:55 PM