I started by removing the injectors from the engine. I had suspected them of being clogged or dirty since the engine runs poorly when cold, so I decided to have them inspected. I took them (still attached to the fuel rails, although this wasn't necessary) to the local injector service shop and had them tested out. They actually performed flawlessly, with excellent spray patterns and they all flowed exactly the same amount. However, one of the injector fuel hoses leaked badly during the flow test. I figured if one hose was leaking, the others were probably in similar shape and would start leaking in the near future so I made the decision to go ahead and replace all the injector hoses (and all the rubber fuel lines in the engine compartment for that matter).
After reading a couple of posts on how to remove the crimped-on hose ends, I gathered my tools and the injectors and new parts, set them all on my workbench and had at it. Actually the workbench in this case was the kitchen table... don't tell my wife... Anyway, the tools I used were: Dremel with abrasive cutting blade (do yourself a favor and get the reinforced blades!), phillips and flathead screwdrivers, channel-lock and needlenose pliers, and an X-acto knife. Materials I had to buy were the injector hose (make sure it's fuel injection rated!) and special fuel injection hose clamps, which I found in the "Help!" section of the local auto parts store.
The next step was to remove the factory crimps from the injector hose. I cut them off with my dremel as close to the bottom of the crimp as I could, without cutting the injector body. I also discovered that you can't cut all the way around the crimp because the injector's electrical connector is in the way on one side of the hose. Fortunately I was able to rotate the hose crimp with some channel-lock pliers so I could cut all the way around it. Also I was careful not to cut through the hose and into the barbed end of the injector. I knew when I was at the right cutting depth when I just started to smell the burned rubber... After cutting all the way around the crimp I still couldn't get the top part of the crimp off the hose, so I cut a slit across the top part of the crimp and then grabbed it with my needlenose pliers to spread the metal apart. The top crimp pieces were then easily removed.
After removing the crimp pieces I tried to pull the hoses off. They would not come off even with "vigorous" pulling, twisting, pliers etc. They are really stuck onto the injector barbs. I ended up using my X-acto knife to slit the hoses along the length of the barbs, which made removal a snap. After removing the old hoses I was then able to pull off the bottom pieces of the crimps that were still left on the injectors. They came off with no trouble, the only thing that had been holding them on was the fact that the hoses were blocking them from coming off.
The rest of the process was straightforward, I cut new lengths of EFI rated fuel line to replace the old injector hoses and then clamped them onto the injectors with the EFI rated clamps. The whole process including tool gathering and head-scratching took about an hour for all 4 injectors.
