compression test

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Mar 15, 2010 | 02:32 PM

raptor2005

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Joined: Dec 2009

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compression test

hello i have been fighting with this truck for a while now and tried a long list of thing in the tech folder for no starts. now i have a few questions 1. how do you preform a compression test and 2. is it true that the truck will still run with a blown headgaskets. I was told by a tech that a compression test will not tell me if i have a blown head gaskets and that the truck will still run with a blown headgaskets. the truck turns over but wont start and it spins at about 200 rpms. thanks in advance

Mar 15, 2010 | 04:03 PM

liv

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Joined: Dec 2006

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From: Kansas City/Breckenridge

On a diesel you test compression by sticking the gauge in the Glow plug hole. Its basically just a pressure gauge if you have weak pressure while cranking then it could be a number of things not just head gaskets. There are a lot easier ways to test for blown headgaskets, such as testing coolant for exhaust gases. An engine will still run with blown headgaskets.

https://www.ford-trucks.com/forums/8...condition.html

read this thread from the tech folder. This is a common problem and there is a lot of information out there about it. Try reading the tech folder or doing a search in the future.

Also you didn't provide any information, but the 6.0 has a 5year/100k mile warranty. If you are still under warranty take it in to a dealer.