Outer Limits 4x4 Board

Hi Guys
Got 93 td42 Patrol. Noticed on starting from cold engine would chug for 4 or 5 turns before starting after heat plug light went out. Unusual I thought as it normally bangs into life second turn. I had 6 new NGK plugs on hand so fitted them.....bugger still done the same on me this morning. So if glow plug relay was faulty would plug light on dash go out as normal. I thought light was going out rather quick.Is there a fusible link and or another fuse in the footwell somewhere.When taking the plastic screw cap off the old heater plug there was only a small spring washer on the thread part of the plug. With new plugs there is spring washer plain washer and small hex nut. Do you use any of the supplied stuff on Patrol application? I will check battery also but engine is turning quickly. I have meter but don`t know which setting to put it on to check power at glowplug and bar strip. Any help appreciated.
Alex

Set it to measure DV voltage.
Is it a Digital one or a dial one??

Set the dial one to measure up to DC 50V
If you set it to less the needle will just shoot over to the far side of the gauge and you won't get an accurate reading.
You should get 12V between the top of the plug and any where on the connector strip between the plugs and the block/head.

Get some one to sit in the car, set up the probe's on the voltmeter between the block/head and were ever you choose to measure on the glow plug circut and then get you helper to turn the key.
You should see the needle jump to around 12V and then when the light goes off in side, the voltage should either drop or dissappear.

Individual glow plugs can be tested out of the vehicle using a battery, conect the threaded portion to the negative terminal and the bit where the connector strip would attach to the positive. Do not hold in your hand, vice grips are of poly grips are good.

Thanks diesel boy .I have both types of meter. Will do all that. As I say plugs are brand new and old ones were sooted but no damage apparent.
Alex

Got it. Powder corrosion on terminal plug that sits on inlet manifold. The meter told the story Diesel Boy!.
Alex