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6.4L Performance Parts Discussion What has or has not worked for you?

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Old 08-07-2013, 06:35 AM
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making oil

Hi everyone I have 2008 6.4 bought truck in May. been having problems since end of June. Changed oil it had made about 6qt runs fine no codes. so I added HS mini max DPF EGR delete I was told should stop making extra fuel in oil from regen.changed oil at that time had another 7qts changed oil again about 1000 miles another 7qts of fuel in oil still no codes. Thinking its a injector how do I check for injector leak or something to get problem handled any suggestions thanks.

Last edited by williehood; 08-07-2013 at 09:14 AM.
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Old 08-07-2013, 08:57 AM
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What do you mean you are "Making Oil"? You mean the oil level rising on the dip stick? Are you losing coolant at the same rate? And not being nasty, but a few punctuation marks and pauses would make your post easier to read and understand.
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Old 08-07-2013, 09:22 AM
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It is adding fuel in my oil was told it was from not letting regen cyclen go through full cycle.and only way to stop the regen cycle was to add a race programmer and delete the EGR and DPF so I did with no change still getting quite abit of fuel in my oil. So I was looking for suggestions on how to check my injectors because there are no codes.
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Old 08-07-2013, 09:24 AM
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Leaking injector....Do not ignor the problem any longer. The repairs will not be cheap.
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Old 08-07-2013, 09:39 AM
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Might also be the injector tube that runs to the rail. Those are harder to diagnose as they may have a very slight and sometimes unnoticeable drip. Have somewhere that can run the Ford diagnostic tool do a contribution test. Should help identify which cylinder. There's some other test that can cycle injectors and watch pressures.

That much oil is certainly harmful to your bearings. I would not drive it one mile once I knew it was making oil that bad. Take it in, or fix it in the driveway. If you decide to go all out and buy new injectors and the connectors tubes, watch the guy on youtube that shows the whole process. It's very important to tighten those tubes down like a 1/4 turn after they are finger tight. I personally would just do it myself. But then I don't trust anyone...

Last edited by Expirobo; 08-07-2013 at 09:42 AM.
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Old 08-07-2013, 03:22 PM
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I took it to ford dealership should no something tomorrow hopefully just injectors. I replaced injectors on my 6.0 so hopefully this will be about the same if that is what it is.
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Old 08-07-2013, 04:42 PM
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Good luck. Hope it's a quick and inexpensive fix for ya.
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Old 08-08-2013, 01:04 PM
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Just heard back from Noble Ford I asked them for a compression test they did I guess so they told me I needed new injectors new HPFP and new fuel rail. they weren't sure of where it the fuel was coming from. so if I replace every fuel part basically we will get the problem solved. any advice or just bring home do myself.
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Old 08-08-2013, 01:30 PM
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If they do it, it's going to be a pretty penny. They'll pull the cab to do the HPFP. I would get a second opinion. That's the worst diagnosis I've ever hear. "We don't know where it's coming from so let's just replace $8k worth of parts and labor".

Find a good diesel shop. Someone who actually knows what they're doing. Remember, those Ford techs fix everything from the Ford Focus, to Ford diesels. On one hand, that makes them well experienced, on the other that limits the experience for a specific class of vehicle. I doubt they sit on the forums like us and teach and learn.

You can fix it yourself for probably $3-5k in parts. It can be done without the cab-off. But like I said, it might be something way more simple than the entire fuel system. Who knows. Verify what they did to diagnose that.
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Old 08-08-2013, 01:32 PM
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Oh, and if the HPFP tore up and metal got into your fuel system, then this is a proper diagnosis.
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