I am having problems with a 2017 NPRHD with 6.0L gas. Electric vacuum pump was defective replaced with new unit my issue now is when I apply brakes pump runs but if I rev engine up to 2000 rpm pump shuts off. I am guessing the vacuum pump in motor is defective not maintaining adequate vacuum. I have not found any air leaks thru system. Smoked the lines and all looks good. Have you had a similar issue? Good video on how to verify vacuum. Will try that and see if pump is working.
@@MrJrnegron on the 6.0l gas engine the engine itself makes the vacuum. Almost all the Isuzu I work on are the diesel’s and I haven’t come across this issue on the gas
