GPC or Glow plugs?

[mexicanjoe]

Ok folks LuluBelle was slow to start this morning. The WTS light went out almost immediately and it took some effort to start. So which do i replace first? GPC or GPs? Also need a recommendation for a block heater. Im leaning towards a magnetic heater..... Yea or Nay???

 

[franklin2]

Get a meter or testlight and test all the glowplugs before you spend any money. Pull the wire off each glowplug, clip the testlight onto the + of the battery, and touch the sharp point to the top tip of the glowplug. If it glows bright it's good. No testlight means it's bad. If you have just one bad glowplug, it can make your controller short cycle like it did.

 

[mexicanjoe]

thanks Franklin 2

 

[nelstomlinson]

If you have a multimeter, set it on Ohms, put one lead on the top of the glow plug and the other on the negative terminal of the battery. You should see about 0.2 to 0.1 Ohm. If all the plugs are noticeably higher than that, maybe 0.4 or 0.5 Ohms, you probably have a bad ground connection. Test the plug to block resistance to confirm that.

 

[franklin2]

I am thinking if he had a bad ground connection to the block, that the starter would not turn the engine over.