The Laser Tools 34039 is a critical diagnostic and repair kit for modern Common Rail Diesel engines. This 5-piece set contains the most common "leak off" connectors used on fuel injectors. These plastic connectors are notoriously fragile and frequently snap when being removed during injector testing or replacement. In the UK, where diesel engines are prevalent, having this assortment on hand is vital for avoiding vehicle downtime. The set includes various angles (90-degree and T-piece) to fit different injector configurations. These connectors are the standard interface for performing "leak-off tests," which help identify injectors that are returning too much fuel to the tank—a common cause of hard-starting and poor idling. Manufactured from fuel-resistant nylon, they provide a secure, leak-free connection. This pack of 5 ensures that if a connector breaks during a service, you have a high-quality replacement ready to go.
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