Bad injector

[Waterloo]

I installed mine in my CM-871, it was not difficult at all. You will need to really read, and go over the procedures in Quickserve like hhow55 stated. If you have the tools for the overhead, you are already halfway there, but you may need a "special" tool to remove the injector. If a special tool is required to remove, it is probably worth the investment to purchase. Normally when one injector goes, the rest are soon to follow. At least that has been my experience.