Smoking and hard start after injector change
Here is my problem. I have a 2002 7.3 F250 with 150K miles. I have a superchip tune on performance, K and N air intake, turbo back 4" exhaust, 35" tires, 4.56 gears and a 4" lift.
I had/have a "tap tap tap" noise in the engine that runs good. No miss, no smoke (except black when you punch it). One guys said bad piston, one guy says fuel/injector knock. I take it to Ford and have a buzz and contribution test done. They tell me #3 injector is bad ($239 for that info). I order a re-manufactured stock injector and replace the #3 injector along with the gasket and UVC harness and MAP Sensor. Swap out seemed to go very well. No problems.
Now it will not start via the auto start (did before perfectly) and needs to be turned over for 3 or 4 seconds before starting. Now it has a constant plume of gray smoke that comes out as I drive and the freaking tapping is just as bad.
So good advice here would be greatly appreciated. These motors are supposed to be bullet proof.....