I need a little help on this one. I have a 2014 5.7. For diagnostic purposes where can I tap into a vacuum line or port to pick up a full shot of vacuum 100 % of the time & not only sporadically when the ECM will let it happen. Thanks for all your help.
You should be able to use the vacuum line off your brake booster! Sent from my SM-N910T using Tapatalk
Vacuum source Thank you for the brake booster reply for a vacuum source when the eng. is running. I'll take a look this afternoon while i'm checking my oil.