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john -aka eauto
john -aka eauto, The Car Guy
Category: Ford
Satisfied Customers: 16309
Experience:  ase tech over 15 years in the field
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1997 ford f350 7.3 diesel skipping but no codes and had all

Customer Question

1997 ford f350 7.3 diesel skipping but no codes and had all injector tested ok
Submitted: 3 months ago.
Category: Ford
Expert:  john -aka eauto replied 3 months ago.

have you checked compression? any codes?

Customer: replied 3 months ago.
compression is good and no codes
Expert:  john -aka eauto replied 3 months ago.

if it has good compression its got to be a injector....did they pass a buzz test

Customer: replied 3 months ago.
skipping not like an injector is unhooked if you hammer on pedal it bucks a little
Customer: replied 3 months ago.
just did buzz test and got codes for all injectors for high to low side open
Expert:  john -aka eauto replied 3 months ago.

so either you need injectors or a injector harness

Expert:  john -aka eauto replied 3 months ago.

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Customer: replied 2 months ago.
wiring all good put another idm and codes gone but still have a little skip changed out 1 injector at a time and still does it
Expert:  john -aka eauto replied 2 months ago.

cylinder balance / contribution test to narrow it down?

Customer: replied 2 months ago.
cylinder balance test show fine even tried turning off one cylinder at a time but you can still feeil it skip and sounds like a fuel knock at high rpms around 2200
Expert:  john -aka eauto replied 2 months ago.

so it does this under high rpms not idle?