I recently changed my 19# injectors in my 1999 5.3 for a set of used 24# injectors and got my retune now I have a rough idle.Is this something that will go away with time[PCM needs to learn] or do I have something wrong with my injectors?

 

Could be a stuck injector or something.

-Lurius

 

If one was stuck wouldn't that effect more than idle?Runs great besides idle.

 

Maybe a can of BG 44K in the gas would help.

 

well if you upgraded injectors without upgrading the computer that would be the issue

 

the computer has been upgraded [Westers]

 

whats considerd rough? how is it acting and etc

 

It will be erratic from 300-800 rpm's,not stall and then slowly level out at 600 rpm's.When it levels out it still has an odd exhaust note[Corsa exhaust].Then if I hit the throttle it will get erratic again when it comes back down to idle.

 

Check your injector O-rings to make sure you don't have an air leak into the intake. That would cause an erratic idle but not be as noticeable at higher rpms. Its very easy to get an O-ring pinched or torn when swapping the injectors.

 

Should I remove them all or is there a trick to see a leak?