Thread: 2014 diesel Hilux slow starting & loosing fuel prime.

Yeah, the clear hose trick is one of the easiest ways as the heating of everything under the bonnet can cause things to close up making it hard for the shop to find leaks if the truck is driven straight in and start testing. Fit hose, park up and see where the air collects if any. Kind of points straight away where the leak is if not exactly what is leaking. These can be a royal pain, especially if once it's going and warmed up it stays going and it's when it's cold the problems surface.