|
A easy way to check the cold start injector is to remove a small sliver of insulation from the blue/yellow wire at the cold start injector and touch a hot wire directly from the battery to the exposed copper wire (leave the injector plugged in). If the injector is good it will click when energized. Make sure that the other wire is continuous to ground. Another cause of cold start failure on the Kjet cars is the fuel accumulator which is mounted beside the main fuel pump, This device has a spring loaded diaphragm which is pressurized with gasoline by the fuel pump. Upon engine shutdown this pressure is trapped by the fuel pump check valve and the fuel pressure regulator valve (located in the fuel distributor) on the return end to the gas tank. This maintains pressure on the fuel system (including the cold start valve). If the accumulator is defective, the fuel pump and injection system has to start from zero pressure on every start. This causes a delay in reaching the operating pressure required to open the main injectors as the pump has to fill the accumulator first and then pressurize the system. If it were my car, I would perform a fuel pressure and leak down test. This will prove if the fuel pump is delivering adequate pressure to open the injectors and also show any problems with the accumulator and/or valves.
|
