View Single Post
Old 01-13-2019, 07:35 AM   #8
Blue Bowtie
Registered Offender
 
Blue Bowtie's Avatar
 
Join Date: Mar 2006
Location: Rural
Posts: 6,096
Thanks: 4
Thanked 267 Times in 263 Posts
Re: Fuel Injector Balance Test

Max is right. Rail and regulator volume, temperature, a few ÁS difference in pulse width, and other variables will affect the drop. I've never considered that a very reliable indication, and the validity of the test (in my book) is to indicate whether all the injectors are flowing about the same, and not whether they meet any kind of flow standard. The only reliable method for testing that is to pull all the injectors and flow test them in a bench fixture measuring liquid volume over pulse time.

If all your injectors are providing the same drop, they are probably relatively close in flow across the set - or at least close enough for your PCM to work with them. That still doesn't tell us it the injectors are atomizing or streaming, what the hot performance might be, whether they are flowing at a design volume, or anything else.
__________________
Permanent seat assignment on the Group W bench...
Automotive Forums Survival Guide
Blue Bowtie is offline   Reply With Quote