Removing 6.0 thermostat - Ford Powerstroke Diesel Forum
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post #1 of 12 Old 07-09-2012, 04:00 PM Thread Starter
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Removing 6.0 thermostat

Trying to remove the thermostat to flush the cooling system and am having trouble with access to the nuts. There is what looks like a fuel line running right on top of the nut closest to the firewall (see attached photo). I can barely get to the nut with the line there. Was going to take the line loose, but it is SUPER tight and I'm afraid of breaking it.

How did you get access to the nuts? Any advice?
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post #2 of 12 Old 07-09-2012, 04:05 PM
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You hav to take the fuel line off. put zip ties behind it so it wont fall and be carful not to loose the o ring.

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post #3 of 12 Old 07-09-2012, 04:18 PM
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I didn't take mine off, I just held it out a lil with a screw driver to get the socket on.

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post #4 of 12 Old 07-09-2012, 04:20 PM
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OK so you dont HAVE to take it off but you can chance bending it. It takes 2 seconds to take off. OP what year is your truck?

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post #5 of 12 Old 07-09-2012, 04:24 PM Thread Starter
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OK so you dont HAVE to take it off but you can chance bending it. It takes 2 seconds to take off. OP what year is your truck?
It is an '04 Excursion.
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post #6 of 12 Old 07-09-2012, 04:29 PM
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Yea our 04's have a bit of a tighter area. Take the fuel line off and it will drain out a bit dont worry. use an extention and you should be able to get it right off. might have to grind your teeth if it hasnt ever been off before.

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post #7 of 12 Old 07-09-2012, 06:51 PM
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yep mines an 04 super duty and I have always taken the two seconds and removed both fuel lines.

I did a write up a while back on all the steps to replace a T-stat on my 04, try doing a search.

Too bad I couldn't come over and help, I can swap stats pretty quick.

make sure to NOT drop anything in the hole, lol

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post #8 of 12 Old 07-09-2012, 06:54 PM
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found it

Thermostat change help on 07

enjoy!

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post #9 of 12 Old 07-10-2012, 08:29 AM Thread Starter
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Thanks for the help. I got the fuel line loose and that did the trick. That fuel line was VERY tight. I about went *** over tea kettle when it broke loose I was pulling so hard.

Just got my scanner working, too and now have a delta that got up past 20 degrees. I already changed the BPD EGR/oil cooler out a couple years ago. I think I'll just baby it until I have enough for the BPD remote cooler or something. What a pain...
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post #10 of 12 Old 07-10-2012, 12:44 PM
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Running with a clogged oil cooler could cost you more in the long run. The BPD egr cooler should help prevent an egr cooler rupture but you want to get it fixed sooner than later.

Got questions about your 6.0?
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