2006 cm870 air in injector leakdown test

[CTTOWING]

I understand your opinion and agree with a most of what you said. I donated $100 to your website this morning because it said the purpose of the website is to help others with there trucks. I accept the roasting because of my poor judgement, but hopefully you have some constructive information about the specific problem. Do you have any knowledge or have experienced anything other than an injector causing air in a leak test on an ISX.