If one cylinder is off balance (not the same as the others) the engine will run very poorly, and quite rough too.
With my (faulty) vacuum solenoid, I had excellent performance at low RPM and at very high RPM but the midrange (2000rpm-3500rpm) was only acceptable for a short time then the ECU limped the motor. It was easy to see watching the boost levels: at low rpm, boost was a little higher than expected but followed the expected curve (more demand = more boost). Passing 2000rpm and the boost level spiked at 22.3psi then fell to -14psi or so where it remained for a few seconds before going to 15.6psi.
Manually changing gears did nothing. Pressing the accelerator on full did nothing. Setting the cruise control at 100km/h then slowing to 50km/h and making the system fail then engaging cruise control (so that the throttle wasn't used at all) did not change things either.
It could be a similar thing with yours - the easiest way to tell is to watch the boost levels as you drive. As you approach 2000rpm the turbo should be developing peak boost (under higher loads, like towing up a hill) which ordinarily should be around 19-20psi at the most. If yours doesn't behave that way, you may have something wrong with the solenoid.
Injector issues do happen, absolutely, but they're nowhere near as common as busted vac hoses, glitchy solenoids etc.
With my (faulty) vacuum solenoid, I had excellent performance at low RPM and at very high RPM but the midrange (2000rpm-3500rpm) was only acceptable for a short time then the ECU limped the motor. It was easy to see watching the boost levels: at low rpm, boost was a little higher than expected but followed the expected curve (more demand = more boost). Passing 2000rpm and the boost level spiked at 22.3psi then fell to -14psi or so where it remained for a few seconds before going to 15.6psi.
Manually changing gears did nothing. Pressing the accelerator on full did nothing. Setting the cruise control at 100km/h then slowing to 50km/h and making the system fail then engaging cruise control (so that the throttle wasn't used at all) did not change things either.
It could be a similar thing with yours - the easiest way to tell is to watch the boost levels as you drive. As you approach 2000rpm the turbo should be developing peak boost (under higher loads, like towing up a hill) which ordinarily should be around 19-20psi at the most. If yours doesn't behave that way, you may have something wrong with the solenoid.
Injector issues do happen, absolutely, but they're nowhere near as common as busted vac hoses, glitchy solenoids etc.
