HELP. switched to ELC now have leaks. - Ford Powerstroke Diesel Forum
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post #1 of 8 Old 04-04-2011, 06:39 PM Thread Starter
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HELP. switched to ELC now have leaks.

Hey guys, well about month ago I did a coolant flush. I also added my dieselsite 203 thermostat, billet housing, and coolant filter. I recharged teh system with Rotella ELC. I flushed it properly, and there was no residual coolant from before.

All was fine until now. I have leaks everywhere. The heater core hoses are leaking at the inlets to the core on the firewall, its leaking around the temp sender, and it looks like its leaking around the pump possibly.

With the green fluid in it before NOTHING leaked. Is it a result of the ELC? and am I stuck changing all of these gaskets now?

Could it just be that certain seals arent compatible?

2001 Ford F-250 Super Duty
7.3 Powerstroke - ZF-6 speed - 6" lift - Bilstein 5150's - 35's - 4" Magnaflow exhaust - Superchips 1705 - AFE Stage 2 intake - Isspro gauges - HPX line - 203* T-stat, Billet housing - Bypass coolant filter - Bypass oil filter - Stancor GPR - High Idle Controller - International 'blue' CPS - non-EBPV pedestal/exhaust housing - Wicked Wheel - CCV mod - Boost Fooler - 06 Harley lights - T500 HPOP - Valair Clutch
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post #2 of 8 Old 04-04-2011, 06:54 PM
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I can't help, but I am subscribing, I was planning on doing mine with Rotella ELC ASAP... Now... maybe not.
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post #3 of 8 Old 04-04-2011, 07:29 PM Thread Starter
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update:

So I wanted to clear up where exactly it was leaking. I washed the engine down with water, and than started it up, watching for leaks. Its is leaking around the thermostat housing, and by the heater core hoses (at firewall). I JUST changed to the billet t stat housing, with a 203* tstat, and new seal from diesel site.

could the system be overpressurizing? and if so what should I do about it?

2001 Ford F-250 Super Duty
7.3 Powerstroke - ZF-6 speed - 6" lift - Bilstein 5150's - 35's - 4" Magnaflow exhaust - Superchips 1705 - AFE Stage 2 intake - Isspro gauges - HPX line - 203* T-stat, Billet housing - Bypass coolant filter - Bypass oil filter - Stancor GPR - High Idle Controller - International 'blue' CPS - non-EBPV pedestal/exhaust housing - Wicked Wheel - CCV mod - Boost Fooler - 06 Harley lights - T500 HPOP - Valair Clutch
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post #4 of 8 Old 04-04-2011, 10:08 PM
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weird it does sound like you have too much pressure. i dont think thats elc related, i've been running it for a long time, as well as many others, these motors are made to run on it.
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post #5 of 8 Old 04-05-2011, 04:56 AM
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I know its not your only leak, but I have read on here and other sites that the billet housing doesn't seal as well as a stock one. Apparently the stock one kind of bends into place, while the billet one won't. Maybe try some rtv there?


2000 DRW CC 7.3
Exterior: 08 Exterior Clone, 22.5's
Engine Mods: GTP38R WW2, 5 inch exhaust,T500, 6637, TW tunes,DI Up pipes, 6.7 fuel pump fuel system.
Trans Mods: 6.0 trans cooler, JW Valve body,Billet triple disc converter.
Sound Mods: 7" flip out tv, 3-way speakers all around, 12" sub, 500 watt amp.
Misc:dieselsite coolant filter, max ac assist, BRV, IHD,gauges, CCV

Next up power rear window
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post #6 of 8 Old 04-05-2011, 05:42 AM Thread Starter
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Actually now that I've had time to think about it, the 203 would cause a slightly higher pressure of the coolant, exposing any leaks. I think the o rings in the heater hose quick connects must be shot. Did a lot of reading last night, and found as well people having leaks with the billet housings. I will remove the tstat and housing and file the cast aluminum with a flat file to make sure the surface is flat. And Ill rtv it on the outside of the o ring. Sorry guys, I just kind of panicked last night when I popped my hood and saw coolant everywhere.

2001 Ford F-250 Super Duty
7.3 Powerstroke - ZF-6 speed - 6" lift - Bilstein 5150's - 35's - 4" Magnaflow exhaust - Superchips 1705 - AFE Stage 2 intake - Isspro gauges - HPX line - 203* T-stat, Billet housing - Bypass coolant filter - Bypass oil filter - Stancor GPR - High Idle Controller - International 'blue' CPS - non-EBPV pedestal/exhaust housing - Wicked Wheel - CCV mod - Boost Fooler - 06 Harley lights - T500 HPOP - Valair Clutch
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post #7 of 8 Old 04-06-2011, 10:31 PM Thread Starter
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Solved my leaks. Removed the billet housing, and filed the water pump mating surface flat. Made sure all was clean/dry and used a bit of RTV sealant, along with a new o-ring, and it sealed right up. Fixed my heater core hose connections by cutting the lines back, using 5/8 barbs and heater hose with hose clamps to seal them off.

Thanks for the help.

2001 Ford F-250 Super Duty
7.3 Powerstroke - ZF-6 speed - 6" lift - Bilstein 5150's - 35's - 4" Magnaflow exhaust - Superchips 1705 - AFE Stage 2 intake - Isspro gauges - HPX line - 203* T-stat, Billet housing - Bypass coolant filter - Bypass oil filter - Stancor GPR - High Idle Controller - International 'blue' CPS - non-EBPV pedestal/exhaust housing - Wicked Wheel - CCV mod - Boost Fooler - 06 Harley lights - T500 HPOP - Valair Clutch
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post #8 of 8 Old 04-07-2011, 03:00 PM
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Good to know about your leaks/fixes. I am planning on doing the exact same thing to my 2002 Excursion. I have the billet housing, 203* t-stat, ELC, dual alt upper rad hose to go around the belt and the coolant filter kit ready to be installed.

2002 7.3L Excursion Limited 4x4
- 21"/11"/21" Vision X Xmitter Prime light bars (47,000 lumens)
- Edge CS Monitor
- Tymar intake
- Fumoto Quick Drain Valve
- Coolant filter, ELC, 203* T-stat and billet housing
- Riff Raff boots
- PHP Chip (Stock, 80DD, 100Race, Whisper Mode, 80Tow, Smoke Show)
- F350 leafs front and back
- Hellwig rear sway bar, Bilstein 5100's
- LT275/65R20 Durtrac's on 20" King Ranch wheels
- Fred Goeske 2" steel wheel adapters
- Genuine Larry B's Denso starter
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