Dati, meron akong naririnig na relay (glow plug relay?) mga 3sec sa may dashboard ng paje after turning the ignition key. Then I could turn it fully to start the engine.

Lately, nawala yung sound ng relay kaya di ko alam kung sira yung relay. I turn the key to start anyway and I think yung lakas lang ng battery ang nagdadala para mag-start yung makina. Sometimes it takes two tries to start. Relay nga lang kaya ang problema nito (which means the glow plugs do not get their power supply?) Is it easy to D.I.Y. (replace relay)?