Be cautious, but I've never been squirted in the eye. Put it this way - at idle, you can pull off an injector line and count the drops. How much pressure can there be in the individual injector lines? Upstream might be a different story.
Set your wrench on a fitting, drape a rag over the fitting, then loosen the fitting. After the pressure is gone from one fitting, there won't be pressure in the others.
Last edited by sixto; 10-11-2003 at 09:57 PM.