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James, Ford Technician
Category: Ford
Satisfied Customers: 3631
Experience:  Ford Senior Master Tech, Ford gas and diesel expert, ASE Certified
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I have a 2003 7.3 power stroke. It starts hard( have to

Customer Question

I have a 2003 7.3 power stroke. It starts hard( have to crank for about 10 seconds. Put both new valve cover gaskets in. Did a buzz test on injectors and get a P1273,1274&1276. Injectors all same the same with the exception of 8, it is a little quieter than the rest. What could the fix be.
Submitted: 1 year ago.
Category: Ford
Expert:  James replied 1 year ago.

Hello, how many miles are on this vehicle? Do you have a chip or programmer installed?

Customer: replied 1 year ago.
291,000 it does have programmer, not sure what kind,it has an 8 position knob
Customer: replied 1 year ago.
When I swapped the PCM it did not have a programmer and it didn't make a difference
Expert:  James replied 1 year ago.

Ok the best way to diagnose is with the programmer on stock setting. That is always the first place I start

Expert:  James replied 1 year ago.

So the codes are for cylinder 3,4,6. If you ohm each injector wire to the middle wire in the harness. Do you get about 2.8 ohms? Sometimes if you have a test vehicle swapping the IDM is a good test as well.