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93 7.3l club wagon where are glow plugs?

2606 Views 13 Replies 6 Participants Last post by  [email protected]
My van is hard to start at cold temps. It is -20F here today. I have a recirc pump, oil pan heater and two battery blankets on the vehicle. It also has a blanket on the hood to keep the heat in. I think my glow plugs need to be replaced. I am new to diesels. Are my glow plugs under the valve covers?

She will chug a little (like once) when I try to start her. But it is so cold I loose battery power quickly. So I keep starting over. I have a charger on the batteries.

I am thinking that the fuel is so cold that it won't ignite, and some/all the plugs are bad, compounding the problem. Is this a reasonable guess? I will replace the plugs, but I'm not quite sure where they are, as I have seen comments about them possibly being under the valve covers. Not looking foward to that in this weather, but whatever it takes........

Gotta get it goin in Alaska
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Additives definitively help. Diesel fuel "gels" at temps below freezing. Even In the Midwest (not as cold as AK) I always use an additive in the winter and summer to help with starting and it makes a huge difference.

CDNSARGUY has all the info for glow plug operation. If you do a search under the forum tools, you can read up on a lot of post about glow plug operation. Our system doesn't cycle as long as tractors, but you should have your wait to start light come on for around 10 seconds in the cold.

Another thought too, have you checked to see if you have any leaks around the injectors. Your return lines might be leaking and letting air back into the system adding to the hard starts.
I would think with a Circulating water heater, oil pan heater and blankets that you wouldn't need a ready-heat to get it to fire.

Glow plugs will probably do the trick, along with replacing the return lines.
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