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Bad fuel injectors??

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Old 09-06-2012, 01:46 PM
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Default Bad fuel injectors??

Just picked up a used set of motoron 107961 injectors. Installed them and now the car wont idle or even run without stumbling and running SUPER rich. Does the car need to be tuned for the new injectors, or did is miss something during the install? Car ran fine before the install with stock injectors. Iam replacing due to a D1SC install in a few months. Any help is appreciated.
Old 09-06-2012, 03:05 PM
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yes, the car needs to be tuned for those injectors. welcome to fuel injection.

your IFR table and etc will need to be changed in your tune. what # per hour are they?
Old 09-06-2012, 07:14 PM
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And, while U R at it, change the oil and filter. You've probably washed a bunch of gas into the pan...
Old 09-08-2012, 08:36 AM
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Originally Posted by RONSBLACK1998TA
Just picked up a used set of motoron 107961 injectors. Installed them and now the car wont idle or even run without stumbling and running SUPER rich. Does the car need to be tuned for the new injectors, or did is miss something during the install? Car ran fine before the install with stock injectors. Iam replacing due to a D1SC install in a few months. Any help is appreciated.
Went from factory injectors to bigger ones without recalibrating your PCM??
Old 09-14-2012, 01:31 PM
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Thats what happens when u dont know any better. The engine was only started for 10-15 seconds, so i dont think the oil was too badly affected. I dont know anything about the current tune in the car as far as the IFR tables are concerned. I'am gonna be towing the car down to frost in a few short weeks to get the tune done. Thanks for the info guys, cause i really thought I did something wrong. Next time before I start I will !! LOL Atleast I now know for future builds!
Old 09-15-2012, 05:15 PM
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Used injs?? If so, get them cleaned and flow tested BEFORE you haul it to Frost.



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