Question about 2008 Ford F-350 Super Duty

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Drove home from work went to get back in it next day and truck turns over but wont start up has oil pressure light on has oil and fuel but just turns over its a f 350 diesel 6.4

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Hi.

The first thing to do is an oil change. Bleed oil and refill oil, and replace the oil filter.
After that check oil pump and oil pressure. Oil pressure is better tested using an hand gauge rather than relying on the instrument gauge. If pressure is below 40 psi at about 2000 rpm, then you may need to replace the pump. There is also an oil pressure relief spring that is better to replace.

If that does not fix the problem, then there is a number of things to be tested. Start from doing a code scanning, do an injector cleaning, replace air filter, and check the sensors in the air intake. Ensure that all vacuum hoses are in place and look for eventual vacuum leaks.
Check the fuel pressure, a bad pressure regulator may cause similar problems.Check fuel pressure using a gauge tool. At start it will be 45-65 psi. If it is less, then it is fuel pump or pressure regulator.

Start bleeding oil, replacing oil filter and testing the oil pressure.

Regards.

Ginko.

Posted on Mar 21, 2011

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Posted on Jan 02, 2017

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