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Old 08-26-2016, 08:01 PM   #5867
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Check your air filter and make sure it is getting enough air, a clogged air filter will act the same as a fuel filter, and that can also decrease the fuel mileage, also check the whole intake system from the air filter to the inlet of the turbo for any blockage. A question is did it start doing this shortly after a fuel stop? Bad fuel could be another possibility, if this is the case then a big dose of injector cleaner and a change of the fuel filter is in order, after running the dirty fuel out. If it has a lift pump, and it goes bad, it will do the same thing. Hope this helps.
Frank
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Old 08-26-2016, 08:09 PM   #5868
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a lift pump? I guess I don't know what that is.
thanks
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Old 08-26-2016, 08:12 PM   #5869
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Hi,

Dave started having a problem with this in February. He had a new turbo put on it with no difference. He has put in additives, fuel filter changed, air filter changed, and this trip it is doing it again and more often. He doesn't know diesel well so please give an explanation for him to understand.

Thank you all, Lynne
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Old 08-26-2016, 10:01 PM   #5870
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Sure thing Lynne,
A lift pump is sometimes used on a diesel between the fuel tank and the engine, it is actually a small fuel pump used to push the fuel to the injection pump. If the truck is equipped with this pump and it goes bad, the injection pump can't pull enough fuel to feed the engine when it is loaded down. . It is a little electric fuel pump, some trucks it is located in the fuel line, some of the newer trucks have it in the fuel tank, like the newer gasoline cars and trucks, I don't know which kind he has. I just checked and it looks like there should be a high pressure lift pump located on the inside of the drivers side frame rail approximately under the drivers seat give or take little bit. With the truck running, you should be able to feel the pump running, if you can't feel it, then have it checked out. If it isn't running, then this would be a good bet to be the problem. I hope that this helps.
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Old 08-27-2016, 12:52 AM   #5871
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I will have to agree with Frank on this one, does sound like a fuel related problem, as a bad connection would do it all the time? I sounds like it is not getting the proper amount of fuel, I would also look for another fuel filter, that might be restricting the fuel flow, while you are under the truck looking at the lift pump, follow the fuel line in both directions, and make sure there are no leaks/wet spots, and there is not another inline filter that has been overlooked! Hope it is something easy, but Lynne, you might call your roadside service guy and have him look it over too? Rail!
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Old 08-27-2016, 06:18 AM   #5872
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Hi Guys,

He has had it in 2 times to a repair shop at the tune of $3,000 and still happening. You know how this is. I will have him input the brand and model and show him what Frank said. I am sure Dave and Jerry will be under the truck today to check this out.

Dave said his fuel mileage has gone way down. They plan to go to Maine and really don't want problems on the road.

Will check back in later. Thank You Lynne
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Old 08-27-2016, 07:50 AM   #5873
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thanks everyone. I know know where to look and the lift pump is under the drivers side frame. I'll check this out this am. I'll let you know.
Thanks again Dave
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Old 08-27-2016, 08:53 AM   #5874
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My truck is older, but there is a acceptable range of pressure the lift pump should be delivering. I am on my 3rd lift pump, they have a reputation for failing.

However, so far mine have failed and we just would end up dead on the road,,,, and a quick check revealed no fuel in the filter.

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Old 08-27-2016, 12:37 PM   #5875
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Dave,
You might have to have someone check the pressure with a gauge, if the pump is working, I don't know the specs on it as I have a Duramax, and they have a different setup.
Frank
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Old 08-27-2016, 07:50 PM   #5876
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Frank,

It finally quit raining long enough for Dave to get outside and check the lift pump which seems to be running.

He has an appointment at a local dealership on Monday so he will have them check it. He is frustrated because they can't seem to figure out what is wrong with it. Spends money, gets it fixed, and still having issues.

He is great with gas engines but this is his first diesel and it is different for him. Thank you all for helping answer this question, he now knows about the lift pump.

Lynne
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Old 08-28-2016, 08:19 AM   #5877
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Good Morning, Lynne hopefully Dave gets some answers from the dealer. Well it's been a little crazy around here, yesterday Eleanor's mother was taken to the hospital with a stroke, not sure yet what all will be the outcome of it so we have obviously put all trips on hold for now.
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Old 08-28-2016, 08:32 AM   #5878
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Prayers for Eleanor's Mom. Hopefully she was found early enough to administer the clot busting drugs. Give our best to Eleanor as well.
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Old 08-28-2016, 08:34 AM   #5879
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Sorry to hear the new's, prayers going your/her way.
hope she pulls thru.
Mom had a few strokes but she made a full recovery but it took her almost a full year to do it.
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Old 08-28-2016, 08:41 AM   #5880
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Oh boy, sorry Terry! Please pass our positive thoughts and prayers onto Elenore and her mother.

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