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post #1 of 24 Old 03-25-2014, 04:19 PM Thread Starter
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Buying a new truck

Hi guys, new to the forum here and was looking for some advice. I am currently looking at buying a 06 f350 diesel. it has 100k on it. I have been driving them at work for several years and am pretty familiar with the motor and their problems. So I took the truck for about a half hour drive, let it get nice and warm, got on the thruway and put a good load on it a couple times. Got back to the lot and opened the hood immediately. Hood covered in coolant right above degas bottle. good puddle under the truck. Told the salesman good chance it needs headgasket. The truck drove/started/idled perfectly, no white smoke and felt like a flawless truck other than the coolant issue. He stated he would have it looked at, called the next day and stated that their shop did a compression test and sent a coolant sample to be tested for combustion gasses and they both came back normal. I don't believe that the tests were done properly. My question is could anything else cause coolant to come out degas bottle. Thanks for the help.
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post #2 of 24 Old 03-25-2014, 04:27 PM
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sometimes the gasket is only bad under load. could have been over filled too.

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post #3 of 24 Old 03-25-2014, 04:33 PM Thread Starter
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Wasn't over full, checked it before it was driven. I'm figuring it needs head gaskets. Assuming when they tested it that they didn't really put a good load on it, that's why they found something wrong.
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post #4 of 24 Old 03-25-2014, 04:41 PM
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Buying a new truck

Best way to do that test, which I'm sure they won't let you. Is tee in a 3/8" hose at the top of the degas tank. Make it about 15'. Run it out from under the hood in between the grill and drivers head light, across the hood, put wiper over it, through the driver door window (nothin but net). Install a 30 psi gauge on it. Then go for a ride. If she goes up to 15 psi that means the cap is doing its job and venting, hence the coolant. If it only goes up to around 5lbs then you only have a bad cap.

Edit: if it does vent with a bad cap then you'll have to replace the cap and retest to be sure.

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post #5 of 24 Old 03-25-2014, 04:46 PM
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Could be a stopped up oil cooler causing it to puke if the EGR has been deleted. Best bet, find a 6.0 thats already bullet proofed. JMO

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post #6 of 24 Old 03-25-2014, 04:53 PM Thread Starter
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the motor is completely stock, looks like it has never been touched. egr looks factory, no head studs, no exhaust nothing.
Ricemiester They claim they did a pressure test on the cooling system. Exactly what they mean by that I do not know, he did not know details from the shop. I am familiar with the test you described. I thought the coolant system buiding up 15+ PSI under load was sign of bad head gasket and not a normal operating psi.
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post #7 of 24 Old 03-25-2014, 05:07 PM Thread Starter
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starcommtrey1 I looked at a couple other trucks that have been bullet proofed but wasn't overly impressed with them. Seems like trucks around WNY are hard to come by lately, especially a good clean one. Thought it would be better to have the work done myself and know exactly what was done to it and that its done right. Was kind of a guessing game with the other ones I have looked at. Could tell they had studs no egr but that's about it. And they are all rusty from the brutal winters over here.
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post #8 of 24 Old 03-25-2014, 05:39 PM
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hey man, I would pass on the truck. You really do not want to get someone elses problem. The only way you are going to be able to properly test the coolant pressure is to put an inline pressure gauge going to the degas bottle (like stated earlier), I doubt they will let you do that. You might need to travel to get a good 6.0 in your price range, but I know there are plenty of them out there to choose from. Be patient, you'll find one.

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post #9 of 24 Old 03-26-2014, 07:53 AM
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Hey you said you are located in wny? Are you close to Fulton or Oswego?

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post #10 of 24 Old 03-26-2014, 02:55 PM Thread Starter
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I am in buffalo. I spoke with the dealer today. We agreed to have truck taken to the ford dealer and let them test for bad h/g. agreed that if they are bad he will take 5000 off the price for repair. Told him I would not be interested in having them fixed, would like to have it done myself.
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