When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Here is a thread with a video cheezit posted a while back. It shows how a bad EGR cooler could be diagnosed as a bad headgasket. Pressure rises and falls quickly with rpm and is very high. The point being many Techs would have said the gaskets were bad when in fact it was the EGR cooler on this truck.
Also, while I agree with Benny that the pressure check is the proper way to diagnose- a failing cylinder would point you in the right direction- but cranking with the starter doesn't make the temps and pressure the gasket must seal against when the engine is running. Some have had gaskets leak when towing and in high boost situations and not leak when driving easy in town.
I'm beginning to think the only way to diag a leaking headgasket -for sure- is with the gasket in your hand.
Last edited by Rusty Axlerod; Jun 1, 2013 at 07:29 AM.
Reason: Add
I have a question, and please to dont this the wrong way. Im not trying to argue with anyone.
If a compression test will tell you definitively whether your headgaskets are bad, then why isnt that the standard test? Not one of the dozen shops i called suggested a compression test. Ive viewed several diagnostic tutorial videos, read several dozens threads similiar to mine, without the mention of a compression test to diagnose bad headgasket. There are thousands of threads similiar to mine, where guys are in my exact predicament, trying determine their problem. Why arent they all just running a compression test and be done with it?
here is a simple test you could try, remember they also sell this device, but this is a reputable company that i trust, it may not be definitive , but is good info either way, simple to preform.
To do the compression test you need a tester + this
adaptor to reach into the glow plug hole Amazon.com: OTC 6660 Compression Tester Adapter: Automotive
The price on Amazon was better than Ebay
The tool you want is an OTC tool part number OTC 6660.
Sean
Thanks sean I reped Ya
In Fact I reped EVERYONE
Except Scott I was in Rep Time Out sorrey Man Catch Ya Later
here is a simple test you could try, remember they also sell this device, but this is a reputable company that i trust, it may not be definitive , but is good info either way, simple to preform.
Check out this video on YouTube:
Yea, im in the process of getting some rubber to run that test. Thanks for the video.
Ok, first and foremost i would like to acknowledge all of those who have followed and posted helpful info on this thread. I performed the bubbles in the jar test like that in the video and it leads me to believe i have a bad headgasket. I know many will think i havent done enough to confirm that i have a bad headgasket, but i have decided to do the full deal and be done with it.
The shop im considering quoted my $4025 for, sinister full egr delete with uppipe, oem headgasket w/arp studs, ford updated oil cooler, dissemble turbo and cleaning, injector test, and sinister coolant filter. I figure since i run a tuner, tow heavy, and run it hard with an 8" lift, this would be the best decision for the present and the future of my truck. Thanks again.
I think you had a whole bunch of Very smart folks on the 6.0 weigh in on your concerns about spending money where you maybe shouldn't. It's a great place here, isn't it? We all wanted it to be less, but in the end, you will trust the truck after you're done with this....