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WD-45 Diesel
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Tom Miller (IA) View Drop Down
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Joined: 15 Sep 2009
Location: Iowa
Points: 148 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Tom Miller (IA) Quote  Post ReplyReply Direct Link To This Post Topic: WD-45 Diesel
    Posted: 20 Jun 2011 at 12:14am
My WD-45 Diesel is having issues running hot 220-230ish! It wont stay there but it does hang in the 215-220 more than i like! Have seen when I am working it the thermostat seems to hang up and cause the temp to swing from overheating to like 170 then its ok for the day. It also seems to push coolant out when i change or add to the radiator but just to a point then it quits, is this part of my temp issue or just nature of the beast?
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TexasAllis View Drop Down
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Joined: 14 Sep 2009
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Points: 396 		Post Options Post Options   Thanks (0) Thanks(0)   Quote TexasAllis Quote  Post ReplyReply Direct Link To This Post Posted: 20 Jun 2011 at 7:06am
From what you describe I would change the T-stat.  Sounds like it is opening slow and not all the way.  Check the new one in some boiling water before you install it. 
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Jeff Z. NY View Drop Down
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Joined: 11 Sep 2009
Points: 7326 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Jeff Z. NY Quote  Post ReplyReply Direct Link To This Post Posted: 20 Jun 2011 at 7:12am
Run it without the thermostat for a day and see.
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Butch(OH) View Drop Down
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Joined: 11 Sep 2009
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Points: 3842 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Butch(OH) Quote  Post ReplyReply Direct Link To This Post Posted: 20 Jun 2011 at 7:56am

First thing to do is remove the cap and with it running fill the radiator to the top and look for signs of compression entering the cooling system, bubbles or coolant shoved out beyond the small amount that happens as the coolant expands when warming up.  If present you just found your overheating problem, or at least part of it.
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Lester View Drop Down
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Points: 526 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Lester Quote  Post ReplyReply Direct Link To This Post Posted: 20 Jun 2011 at 9:00am
I had a 45D do that and it was a head gasket.
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