Need second opinion before $9k repairn, need second opinio - 2016 C7 Stingray LT1
Team Owner
Joined: Sep 2000
Posts: 25,025
Likes: 2,716
From: Far NW 'burbs of Chicago
St. Jude Donor '13
Burning Brakes
Joined: Mar 2018
Posts: 1,173
Likes: 218
Advanced
Joined: Aug 2023
Posts: 50
Likes: 31
""""""2. For diagnostic confirmation, what would you do first?- Injector swap (cyl 2 ↔ cyl 1) and recheck Mode 6?- Send injectors out for ultrasonic flow test?- Borescope cyl 2 first?- Tech 2 fuel system data log?"""""""""
-Personally i would swap injector and plug wire from a working bank. An experienced mechanic should be able to the above in under 4hrs, if he is good, under 2hrs bill time. Then retest mode 6 like you said.
-Testing injectors does not always work, ohm wise, and spray wise. Some only have issues once they are hot.
""""""3. If injectors confirmed, are you guys replacing all 8 or just the bad ones? The labor is the same to access them, but cost diff is significant.""""""""
-I had an intermittent cyl misfire, i swapped only 4, worked fine. The only thing is the fuel trims were off by about 10% afterward for one bank. Im guessing the new injectors had a slightly larger spray.
-Eventually i swapped the other 4, if your already in there, just get it over with.
-Personally i would swap injector and plug wire from a working bank. An experienced mechanic should be able to the above in under 4hrs, if he is good, under 2hrs bill time. Then retest mode 6 like you said.
-Testing injectors does not always work, ohm wise, and spray wise. Some only have issues once they are hot.
""""""3. If injectors confirmed, are you guys replacing all 8 or just the bad ones? The labor is the same to access them, but cost diff is significant.""""""""
-I had an intermittent cyl misfire, i swapped only 4, worked fine. The only thing is the fuel trims were off by about 10% afterward for one bank. Im guessing the new injectors had a slightly larger spray.
-Eventually i swapped the other 4, if your already in there, just get it over with.
