Fuel Injectors
 

I had all new injectors installed on my 03 f250 super duty XL, 5.4 liter. The originals were a yellow orange color. The new ones are hot pink. When I start up cold the engine has a hard time starting. I crank the engine there is a pause and then the engine begins to start up. When the engine is hot and I turn it off and then on no problem. It’s when it sits for a couple of hours. Then the problem starts again. Are they the wrong injectors or does it need new wires? I looked up the pound pressure and the stock are 19 lb. The pink ones are apparently 21 lb from what research I can find. I am going back to the auto repair shop tomorrow morning. Just looking for advise so I can talk intelligently. tia