Dumb question maybe?
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Lead Driver
Joined: Nov 2003
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From: Campbell River, B.C.
Dumb question maybe?
I was wondering if any of you with 6.9s are noticing any real amount of pressure built up in the cooling system.
I seem to remember that when I first got my diesel, it would keep the rad hose soft even when the engine was hot, now it gets hard soon after a cold start. Is this normal? Or is it an indication of a leaking head gasket?
I seem to remember that when I first got my diesel, it would keep the rad hose soft even when the engine was hot, now it gets hard soon after a cold start. Is this normal? Or is it an indication of a leaking head gasket?
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Lead Driver
Joined: Nov 2003
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From: Campbell River, B.C.
Well that certanly hasn't happened yet. Though my f150 did the the head gasket(s) started to leak.
The only reason I ask is because when I first got the truck it didn't build pressure at all. I guess its possible there was a contaminant at the rad cap that allowed the pressure to escape (or something), the 6.9 has a very large recovery bottle, so maybe thats why it never puked on me.
The only reason I ask is because when I first got the truck it didn't build pressure at all. I guess its possible there was a contaminant at the rad cap that allowed the pressure to escape (or something), the 6.9 has a very large recovery bottle, so maybe thats why it never puked on me.
Posting Guru
Joined: Mar 2005
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From: KY
Dave I wouldn't sweat it to much. If or when it goes, you yourself will know.
The coolant level in my old 6.9 would stay right at the top of the cores in the rad. I could fill the surge tank up and with in a couple of weeks all the coolant would be gone down to the top of the cores and it wouldn't get any lower. It has been that way for years. I have had people call me about the same thing and I can't give them a good answer but drive it. I could sit here and think of several things that would sound good but to be exact, I wouldn't try unless it was an obvious failure.
Does yours do this?
The coolant level in my old 6.9 would stay right at the top of the cores in the rad. I could fill the surge tank up and with in a couple of weeks all the coolant would be gone down to the top of the cores and it wouldn't get any lower. It has been that way for years. I have had people call me about the same thing and I can't give them a good answer but drive it. I could sit here and think of several things that would sound good but to be exact, I wouldn't try unless it was an obvious failure.
Does yours do this?
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Lead Driver
Joined: Nov 2003
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From: Campbell River, B.C.
Originally Posted by catfish101
Does yours do this?
No, the level is always at the top of the rad, there are leaks at the rad that will need to be fixed though, so I do loose some coolant over the course of several hundred miles. The rad's number is up though, tomorow I will try to seal the leak, again.
Its never blasted coolant out the revovery tank, I was just wondering if its normal for the rad hose to indicate pressure only a minuite or two after startup, apearently it is.
