Hi, I've noticed a "tsk-tsk" sound lately from the rear of my engine. I also noticed a small amount of fuel around the base of an injector. There are tiny bubbles seeping around the base of the injector where it seats in the head. It's been at least 500 hrs since the injectors have been looked at so I figure on pulling them all. Do I need the special Volvo tools to do this? I don't have them. Are they expensive? Which parts must be replaced when replacing the injectors? Copper sleeve, seal, tips? Are there any tricks that would help? Thank you in advance.
Peter