|
At that bad a mileage number, it would probably be exhibiting other symptoms as well, like hard hot starting, sluggish low power acceleration, and smelly exhaust. I suspect overrich mixture is the problem. Pull your sparkplugs, they are probably sooty. There are a couple of checks you can do on the D-Jet injection with minor work and no major dissassembly. And finding someone who knows this system is rare.
Most likely: The first thing to check is the connection the the coolant temp sensor, at the front-top of the engine. These wires are subject to much heat and are frequently dislodged. With the engine running, jostle the wires back and forth or disconnect them to see if you there's any change in the idle. If so, fix that bad connection. If could be a bad sensor as well, but not as likely.
Less likely: The injectors often drip excess fuel into the cylinders. You can check this by loosening the locking ring on each injector, liftng the entire fuel rail out, placing a pan underneath, and running the electric fuel pump. Without the car running, no or minimal fuel should drip from the injectors. If so, you may need some new injectors. They can be replaced individually.
The cold start injector is another likely culprit and should not drip or spray at all when the engine is even slightly warmed up. Easy to remove and check. Also try unplugging the wire from it altogether.
Check your cap, points and rotor. Combinations fo factors can cause poor running.
Thermal timer switches fail.
|
