Low voltage to glow plugs

[BigFreda]

Hello,

Had some issues starting my bongo, was running abit rough. Changed the glow plugs and buzz bar as I realised it was shorting and had a large bare patch on the underside. Using a multimeter I realised that it's only reading 9V coming through to the glow plugs before returning to zero after the click. Is this a glow plug relay issue, fusible link or both? I have checked the battery and it's absolutely fine

Any advice welcome

[g8dhe]

The Glow plugs do normally operate at less than 12v and frequently rated at around 11v I have noticed, however the voltage will normally increase as they get hot and the current they draw falls off. A common glowplug is the NGK-701J variety;

https://www.sparkplugs.co.uk/ngk-glow-p ... 01j-5116-3 for the specification

So dropping as low as 9v would tend to indicate a problem, either the battery & connections or dirty relay contacts etc.