test EGR cooler?
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test EGR cooler?
06' truck is puking under pulling loads. How can I test it to see if its the EGR cooler, cap, or headgasket?
It started at about 24k miles when I was pulling a 10k # box trailer in some hills. Since everytime I hook the same trailer up it will do it if I have to put it under anykindof hard load pulling.
It started at about 24k miles when I was pulling a 10k # box trailer in some hills. Since everytime I hook the same trailer up it will do it if I have to put it under anykindof hard load pulling.
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My 2006 is doing the same thing. only 7,500 miles and puking all the coolant out. Dealer says it holds pressure for over an hour so I am fearing a head gasket. I have a SCT tuner and on the top setting the EGR is bypassed. Took the program out to return to the dealer, said nothing wrong so I reinstalled the middle tune and it did the same thing again. All my fluid is from the drivers side somewhere.
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From: Arizona
Originally Posted by Casey02L
06' truck is puking under pulling loads. How can I test it to see if its the EGR cooler, cap, or headgasket?
It started at about 24k miles when I was pulling a 10k # box trailer in some hills. Since everytime I hook the same trailer up it will do it if I have to put it under anykindof hard load pulling.
It started at about 24k miles when I was pulling a 10k # box trailer in some hills. Since everytime I hook the same trailer up it will do it if I have to put it under anykindof hard load pulling.
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From: Neptune Beach, FL
To check the EGR Cooler..
Jack up the rear of the vehicle.. Start truck and let it run for bout an hour.. Pull the EGR Valve and look down in it.. If you see coolant then EGR Cooler is bad
Jack up the rear of the vehicle.. Start truck and let it run for bout an hour.. Pull the EGR Valve and look down in it.. If you see coolant then EGR Cooler is bad
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The truck only pukes when Im pulling a load up a long hill or repeated hills. It does fine otherwise. I pulled an open car trailer this weekend on the stock program and it did fine; no puking. Loaded it up and car/trailer was about 5k pounds. Stock program it didnt puke any; loaded a SCT tow tune and it puked. Ive had it puke on the stock tune with my 24 foot box loaded about 10k pounds on some long hills as stated in the first post.
Ive swapped the degas bottle cap just for checking it and no help.
Could I just be heating up the EGR cooler so much it boils the coolant? (wondering cause its just on long hills) Maybe if I did EGR up pipe delete and turned the EGR off it would fix my problem?
The truck is lifted 6" and on 37's so I know its straining a little more than a stock truck. It has full exhaust and guages; the EGT's always stay reasonable.
Ive swapped the degas bottle cap just for checking it and no help.
Could I just be heating up the EGR cooler so much it boils the coolant? (wondering cause its just on long hills) Maybe if I did EGR up pipe delete and turned the EGR off it would fix my problem?
The truck is lifted 6" and on 37's so I know its straining a little more than a stock truck. It has full exhaust and guages; the EGT's always stay reasonable.
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From: Neptune Beach, FL
Tell you the truth Casey.. It could really be anything.. We've seen Head Studed highly modified EGR Deleted blocks still puke.. Most common occurances are coolant above factory min mark, bad cap, stud stretching and EGR cooler failure..
It's been a known fact that even stock vehicles will puke pulling a load..
It's been a known fact that even stock vehicles will puke pulling a load..
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Originally Posted by Storm
Tell you the truth Casey.. It could really be anything.. We've seen Head Studed highly modified EGR Deleted blocks still puke.. Most common occurances are coolant above factory min mark, bad cap, stud stretching and EGR cooler failure..
It's been a known fact that even stock vehicles will puke pulling a load..
It's been a known fact that even stock vehicles will puke pulling a load..
There has been at least one member here who has installed a spring in his truck's lower hose, but reported it to be a nighmare to actually accomplish.
You might investigate your local parts stores to see if anyone stocks a lower hose with a spring in it.
-blaine
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From: Las Vega$
Originally Posted by Frankenbiker
It's come to light recently that puking is also caused by the lower radiator hose being sucked closed when under a heavy load. Unlike most other heavy pulling rigs, the SD has no provision to prevent hose collapsing.
There has been at least one member here who has installed a spring in his truck's lower hose, but reported it to be a nighmare to actually accomplish.
You might investigate your local parts stores to see if anyone stocks a lower hose with a spring in it.
-blaine
There has been at least one member here who has installed a spring in his truck's lower hose, but reported it to be a nighmare to actually accomplish.
You might investigate your local parts stores to see if anyone stocks a lower hose with a spring in it.
-blaine
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From: Neptune Beach, FL
Hmm I don't see how it would compress the hose.. The engine doesn't shift that hard.. This has me wondering now.. Looks like I need to do some research.. I may switch out my lower hose and see if I still puke..
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From: Arizona
Originally Posted by Storm
Hmm I don't see how it would compress the hose.. The engine doesn't shift that hard.. This has me wondering now.. Looks like I need to do some research.. I may switch out my lower hose and see if I still puke..
http://www.ford-trucks.com/forums/63...ghlight=Puking
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From: Neptune Beach, FL
Originally Posted by blackhat620
Here is the thread, starts with post #8, Tim has done this mod. The original testing was done by the US military in Iraq.
www.ford-trucks.com/forums/634326-light-duty-vs-heavy-duty-crankshafts.html?highlight=Puking
www.ford-trucks.com/forums/634326-light-duty-vs-heavy-duty-crankshafts.html?highlight=Puking
I'm going to read up on that tho.. May check that mod out
Last edited by Storm; Sep 17, 2007 at 07:40 PM.
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For the record here, the hose doesn't compress from an outside mechanical force.
The water pump pulls enough suction on the lower hose that it collapses. Even with 15-ish(?) psi of pressure on the cooling system. As the hose ages, it loses wall strength, and so takes less and less suction to collapse it. (This might be why the symptom never shows up on new trucks, but only ones that are 3-4 years old.) Hoses with long, straight runs (as the PSD's lower hose is) would be even more succeptible to this problem.
When the hose collapses, the coolant flow through the EGR cooler (as well as the rest of the engine) is suddenly dropped to nearly ZERO, and it's still trying to cool 1000-degree exhaust gases. Ergo, instant coolant boiling.
This collapse phenomenon is much more common than one might think. Chevy (ahem) has had springs in the lower hoses of the Small Block for decades. I'm thoroughly surprised that Ford didn't do this. When I worked auto parts (many years ago) almost ALL lower hoses were sold with springs in them to prevent total hose collapse.
-blaine
The water pump pulls enough suction on the lower hose that it collapses. Even with 15-ish(?) psi of pressure on the cooling system. As the hose ages, it loses wall strength, and so takes less and less suction to collapse it. (This might be why the symptom never shows up on new trucks, but only ones that are 3-4 years old.) Hoses with long, straight runs (as the PSD's lower hose is) would be even more succeptible to this problem.
When the hose collapses, the coolant flow through the EGR cooler (as well as the rest of the engine) is suddenly dropped to nearly ZERO, and it's still trying to cool 1000-degree exhaust gases. Ergo, instant coolant boiling.
This collapse phenomenon is much more common than one might think. Chevy (ahem) has had springs in the lower hoses of the Small Block for decades. I'm thoroughly surprised that Ford didn't do this. When I worked auto parts (many years ago) almost ALL lower hoses were sold with springs in them to prevent total hose collapse.
-blaine
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From: Neptune Beach, FL