Hello all, 96 Hilux 2.4L diesel IDI I have this problem that the glow plugs dont last long with me, before I had a couple sets of Denso ones wich lasted only a few months. Now I have Bosch duraterm which lasted 2 years. occasionally I would hear the glowplug relay clicking a few times instead of once. Fuse is ok, where do you think the problem is, the glow plug relay? The timer? Any thing else? Thanks