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Mudski u may be onto something. My mate wasn't home so I broke out the multumeter and from what I can gather the glowplug resistance when they are out of the vehicle should be 1 ohm or very close to 1 ohm. The first glowplug I tested was bang on that mark after i deducted the 0.4 ohms resistance that comes from the multimeter itself ( please someone correct me if i have it wrong ). The second one I tested doesn't even register on the readout. I have it set on the lowest setting of 200 ohms and it's not giving a readout so I am thinking the resistance of that glowplug is in excess of 200, so it has to be buggered. That's as far as I have got so far I will continue testing the rest but I will buy a new set in the morning and with any luck that will solve the problem. I will let u know. Thanks mudski for the suggestion even if it doesn't fix the issue I still needed new glow plugs anyway ( if I am testing them correctly that is ).