Okay this is not something for back yard technician to work on.
First thing to do is pull the engine oil dipstick and check for the oil level to be overfull and diluted with fuel. If overfull and diluted, take to dealer. Do not try to do anything else.
If no fuel in the oil then:
When you press the priming button it should get real hard to press. That indicates that the fuel is being delivered to the transfer pump inside the high pressure fuel pump. Try and start the engine when the priming button is hard.
If the engine still does not start, then check to see if relay number 5 in the relay center clicks when the key is turned on. If the relay clicks then disconnect the fuel return line located at the rear of the engine on the drivers side near the brake master cylinder. place the end of the engine side of that line into a plastic bottle and have someone crank the engine over for 15 seconds. If you get any more than just a small amount of fuel dumping into the bottle then you have 1 or more injectors with excessive spill to return.
If you have a bad injector check this:
Some customers of 2001-03 model year Chevrolet Silverado; GMC Sierra; 2003 Chevrolet Kodiak and GMC TopKick vehicles, equipped with a 6.6L Duramax Diesel (RPO LB7 - VIN Code 1) engine, may experience vehicle service engine soon (SES) light illumination, low engine power, hard start, and/or fuel in crankcase, requiring injector replacement, as a result of high fuel return rates due to fuel injector body cracks, ball seat erosion, or high pressure seal extrusion (refer to Corporate Bulletin Number 04-06-04-007 and SI).
This special policy covers the condition described above for a period of 7 years or 200,000 miles (320,000 km), whichever occurs first, from the date the vehicle was originally placed in service, regardless of ownership. The repairs will be made at no charge to the customer.
2007-03-08 09:46:12
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answer #1
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answered by Delphi 4
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Tyson i have read your questions and no fuel should not run out of the bottom of your fuel filter that is a water trap you can open it to let water out of the filter so you could be leaking air their and it is getting in to the fuel system and diesel do not like air in their fuel if you have had no luck it is probable farther down stream in the tank the best way would be to take the filter off and blow air down the line to see if some thing is blocking the pickup in the tank then get a new fuel filter and fill it and put it on then start the truck if it runs you have got some blockage in the tank if it run but dos not have no get up and go it is probable pump related i hope this help some.
2007-03-08 13:55:14
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answer #2
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answered by master of none 3
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Sounds like either the fuel filter or maybe the fuel pump. Although diesels have their own particular little quirks when it comes fuel, that's where I'd look. Failing that, I would suggest taking it in to a mechanic...
2007-03-08 08:07:09
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answer #3
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answered by Anonymous
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I think you are right to concentrate on the fuel system. That is most likley the cause, although it could be a clog somewhere else along the line , possibly all the way back at the fuel pump itself.
2007-03-08 08:05:53
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answer #4
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answered by Louis G 6
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There could be a number of problems check the fuel system . bad fuel if you had it sitting to long, it could be that you have insufficient fuel flow. i dont know a lot about diesels thow
2007-03-09 04:12:04
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answer #5
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answered by pimpinkb 1
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Best advise at this point,take it to someone that can scan it to ck it for sufficient fuel pressure when cranking,also don`t rule out the glow plug system
2007-03-09 00:41:14
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answer #6
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answered by deltech 4
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Take the go back line loose on the relationship on the drivers aspect rear of teh engine. placed the top of the line (engine aspect) right into a bottle. Crank th engine over. If it dosn't start up and gasoline is filling up the bottle, then you definately have undesirable injectors and they are spilling gasoline in to the go back. it truly is lined by technique of assure as a lot as 2 hundred.000 miles!
2016-12-05 10:25:57
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answer #7
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answered by ? 4
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Check to see if you're getting spark to the plugs while you're turning the engine over.
May be a bad power box.
2007-03-08 08:12:46
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answer #8
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answered by mantle two 4
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whoa this is way over my head
2007-03-08 08:04:58
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answer #9
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answered by Anonymous
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