Coolant level slowly drops over time - Ford Powerstroke Diesel Forum
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post #1 of 7 Old 11-15-2012, 01:49 PM Thread Starter
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Coolant level slowly drops over time

I noticed that my coolant level drops in the degas bottle very slowly over time. maybe an 1/8" over 1000 miles. I don't see any external leaks. When I deleted my EGR, I welded two plugs in the original EGR cooler inlet and outlets to block exhaust flow. Is it possible for the cooler to still be leaking inside and filling up the cavity with coolant? I never get any smoke from the tailpipe nor do I get any coolant escaping thru the rad. cap like you would for head gaskets.

SOLD--2003 F-250 RC/LB FX4, 6.0, 5R110, EGR cooler capped off at both ends, CAT EC-1, Rotella T6, Motorcraft fuel and oil filters, Amsoil in diffs/T-case, blue spring update, ScanGuage II, 5" Diamond Eye exhaust (not cat, no muffler ) 4" downpipe, Cooper Discoverer S/T's (LT265/75R16E).
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post #2 of 7 Old 11-15-2012, 04:52 PM
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Yes it's possible, but your head gaskets could be leaking also and you won't necessarily see steam, until it gets worse.

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Unfortunately had to Sell my ......2004 KR CC SWB FX4 - Edge insight cts, blue spring upgrade, updated HFCM drain plug, XDP coolant filter, CAT EC-1 rated coolant, Custom Diesel EGR delete, CAT delete, Rotella T6

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post #3 of 7 Old 11-15-2012, 05:34 PM
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Quote:
Originally Posted by southend View Post
Yes it's possible, but your head gaskets could be leaking also and you won't necessarily see steam, until it gets worse.

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Yep, I agree. Leaking that small amount wouldn't be blowing anything other than an almost invisible haze if that. I would suspect a head gasket but that little bit wouldn't be much of a drip from a hose when under pressure and when not running and not under pressure not leak so you wouldn't necessarily see a spot. It could also be a small crack developing in one of the heads too.
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post #4 of 7 Old 11-15-2012, 05:45 PM Thread Starter
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So, If I don't find any leaks, would you say just keep an eye on it till it starts to get worse? It just drives me nuts because I'm so paranoid about the heads/gaskets failing. I just put a new oil cooler and ELC in it about 7,000 miles ago when I got the truck. Its got 147,000 miles on it and original head gaskets and bolts as far as I know.

SOLD--2003 F-250 RC/LB FX4, 6.0, 5R110, EGR cooler capped off at both ends, CAT EC-1, Rotella T6, Motorcraft fuel and oil filters, Amsoil in diffs/T-case, blue spring update, ScanGuage II, 5" Diamond Eye exhaust (not cat, no muffler ) 4" downpipe, Cooper Discoverer S/T's (LT265/75R16E).
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post #5 of 7 Old 11-16-2012, 04:11 PM
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Also possible is that the cooler has developed a leak which is coming out a porous weld on that plug you put in.

SCT, no studs...yet, Dual OEM intake air filter housings, Banks intercooler & intake elbow, Banks exhaust system, Windrunner ported intake manifold, Bullet Proof Diesel remote oil cooler & thermostat, AirDog2 (plus a couple spares), Power steering filter (Amsoil dual-bypass), MagTec deep ATF pan, Electric oil pre-lub pump, Dakota Digital gauges.

Last edited by Term3; 11-16-2012 at 04:15 PM.
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post #6 of 7 Old 11-16-2012, 04:46 PM Thread Starter
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Yea I suppose that is true too Term3. I used two plugs that were 3/16" thick to block off the EGR cooler. My deltas are within spec and the truck has factory tuning and never does really any towing. I'm hoping that it doesnt get any worse, or maybe even the EGR cooler will eventually fill up internally and will stop dropping the degas level. FINGERS CROSSED...

SOLD--2003 F-250 RC/LB FX4, 6.0, 5R110, EGR cooler capped off at both ends, CAT EC-1, Rotella T6, Motorcraft fuel and oil filters, Amsoil in diffs/T-case, blue spring update, ScanGuage II, 5" Diamond Eye exhaust (not cat, no muffler ) 4" downpipe, Cooper Discoverer S/T's (LT265/75R16E).
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post #7 of 7 Old 11-16-2012, 05:24 PM
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I'm thinking that your cooler is already mostly full and every time the coolant pressure becomes more then the exhaust pressure you are loosing coolant thru a small hole that is in the weld you made for the plug install.


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SCT, no studs...yet, Dual OEM intake air filter housings, Banks intercooler & intake elbow, Banks exhaust system, Windrunner ported intake manifold, Bullet Proof Diesel remote oil cooler & thermostat, AirDog2 (plus a couple spares), Power steering filter (Amsoil dual-bypass), MagTec deep ATF pan, Electric oil pre-lub pump, Dakota Digital gauges.
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