Gee Diesel Services specialise in diesel engine tuning and diagnostics. We know what it takes to help your engine achieve peak performance. Gee Diesel Services is a family run business that's helped satisfied customers from all over the world, since we were first established in 1964. And we'll help you too. Our expert engineers will use the very latest dealer level equipment to diagnose problems with your engine. We'll then remove, test and repair any detective fuel pumps or injectors in our dedicated work shop, before refitting them into your vehicle – improving your cars performance.