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2001 lb7 ....turns over for about 6 seconds and fires but
2001 lb7 ....turns over for about 6 seconds and fires but will not run. new injectors, same result. has 44Mpa fuel rail pressure while cranking and will hold it. replaced crank sensor, still no luck. … read more
Chris (aka-Moose)
Chris (aka-Moose)
Technician
Vocational, Technical or Trade School
62,331 satisfied customers
I have a 2004 2500hd duramax with an LB7 engine. I currently
I have a 2004 2500hd duramax with an LB7 engine. I currently have a crank no start issue. The truck hasnt ran in a year and a half because i went to school and a deployment. Im in the Navy. It didnt r… read more
GM Tech (Cam)
GM Tech (Cam)
Chevy Technician
Vocational, Technical or Trade Scho
16,004 satisfied customers
Changed cp3 pump and no start on lb7. 03 chevy 2500 HD 6.6L
Yes.. had injectors rebuilt and changed cp3.. changed rubber fuel lines and return lines in valve cover … read more
GM Tech (Cam)
GM Tech (Cam)
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Vocational, Technical or Trade Scho
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I have an 03 duramax LB7. Ihave a problem with fuel in the
I have an 03 duramax LB7. Ihave a problem with fuel in the oil. I have had all new injectors, Cups and steel lines replaced and the mechanic is telling me it could be pitting in the heads around the i… read more
Tim Mohr
Tim Mohr
SHOP OWNER
Master's Degree
17,721 satisfied customers
My lb7 duramax dies under acceleration when warmed up, have
My lb7 duramax dies under acceleration when warmed up, have replaced injectiors, fprv, new fuel lines, installed a lift pump … read more
Tool Hut
Tool Hut
Owner
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I have a 2003 Chevy with LB7 Duramax. I just put all new
I have a 2003 Chevy with LB7 Duramax. I just put all new injectors,sleeves and glow plugs. Runs smooth at idle with no smoke and with light throttle. At moderate or heavy throttle, it goes into a seve… read more
BOBBYSS
BOBBYSS
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Associate Degree
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2004 lb7, I recently had injectors and cp3 pump replaced.
2004 lb7, I recently had injectors and cp3 pump replaced. Everything seemed to be fine for six months. Hooked up trailer a month ago for 300 mile trip, 150 miles in I had a crankcase full of fuel. Too… read more
GM Tech (Cam)
GM Tech (Cam)
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Vocational, Technical or Trade Scho
16,004 satisfied customers
i have a 04 6.6 duramax lly was having a hard start problem
i have a 04 6.6 duramax lly was having a hard start problem pulled glow plugs an tested them they were bad.. replaced them an the glow plug controler an all the truck does is crank over . if you give … read more
GM Tech (Cam)
GM Tech (Cam)
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Vocational, Technical or Trade Scho
16,004 satisfied customers
I have a 2003 chevy silverado 3500 6.6 l LB7.yesterday it
I have a 2003 chevy silverado 3500 6.6 l LB7. yesterday it lost power on the highway at highway at 65 mph . I coasted off to the shoulder. There is a fuel leak doing down both sides of the bell housin… read more
BOBBYSS
BOBBYSS
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Chevy Silverado 2500 HD: Cam, I asked this question and paid
Cam, I asked this question and paid $45 for an answer but somehow had the wrong email address. So I don't know if you got the question or if I was charged. Here goes again. I have a 02 Chevy Duramax t… read more
GM Tech (Cam)
GM Tech (Cam)
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Vocational, Technical or Trade Scho
16,004 satisfied customers
3500 pickup: vin 1gbhk39d97e104587 duramax 2007..scan tool..rpm
Vin 1GBHK39D97E104587 Duramax 2007 in a 3500 pickup, came to my shop dead/no run issue, 117,xxx miles automatic, scan and no codes, charge batteries good and spin, 143 psi common rail on Genisis scan … read more
GM Tech (Cam)
GM Tech (Cam)
Chevy Technician
Vocational, Technical or Trade Scho
16,004 satisfied customers
2001 chevy: durmax truck runs good..injectors..heater relay
2001 chevy 6.6 durmax truck runs good for 15 to 20 minuts than losses power if you shut it down and re start it is ok for a while than losses power also a code for large fuel leak but no visable leak … read more
John
John
Master A.S.E Automotive technician
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4,071 satisfied customers
2004 chevy: 6.6 duramax..it started missing or jerking..ten miles
I have a 2004 Chevy 2500HD 6.6 duramax. I was driving it this morning and it started missing or jerking. I made it about ten miles with it missing like this. It quit a few times. After the ten miles i… read more
GM Tech (Cam)
GM Tech (Cam)
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Vocational, Technical or Trade Scho
16,004 satisfied customers
2002 chevy silverado 2500: gas it dont want to rev up it..blue smoke
I have a 2002 chevy silverado 2500 duramax and it has code p0380 and it is missing and when you try to to give it gas it don't want to rev up it's putting out blue smoke what do you think could be cau… read more
Ironmike
Ironmike
ASE Master ,Ford Certified Master Tech
Vocational, Technical or Trade Scho
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2500 chevy suburban: 4x4 Auto, 350..block..drops..few seconds
I have a 1992 2500 Chev Suburban, 4x4 Auto, 350 TBI. Have three erratic symptoms: 1) once warmed up and water flowing to block (doesn't do this until water temp comes up, nor if it drops on a cold day… read more
Mike S.
Mike S.
Vocational, Technical or Trade Scho
8,543 satisfied customers
M1008 5/4 ton pick up with 6.2 L diesel..ran great..crank
I have a 1986 CUCV - M1008 5/4 ton pick up with 6.2 L diesel. Got it a few weeks ago and it started and ran great. Over the last few weeks, it got to the point where it would crank and not start. I ha… read more
Wicked Wrench
Wicked Wrench
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Associate Degree
458 satisfied customers
Ford: duramax..mileage..ventilation sys,... fresh oil change..crank
2003 duramax, 23 quarts oil/fuel mix drained from crankcase (not water),motor had rough idle, poor mileage and serious crankcase smell in ventilation sys,... fresh oil change last night cured idle and… read more
Gary
Gary
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Vocational, Technical or Trade Scho
9,659 satisfied customers
2001 chevy: fuel in my oil..knock..lack of power and blow black smoke
I have a 2001 chevy duramax. Last year at 125000 miles I had my injectors replaced by the dealer due to a large amount of fuel in my oil. The other day at 146000 miles the truck began to knock very lo… read more
Carhelp4u
Carhelp4u
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2,560 satisfied customers
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Meet the Experts:

GM Tech (Cam)

GM Tech (Cam)

Chevy Technician

16,004 satisfied customers

GM Grand Master Technician 2007. 14 years experience.

Gary

Gary

Chevy Technician

9,659 satisfied customers

15 years GM master tech

Tim&#039;s Auto Repair

Tim's Auto Repair

mechanic

8,977 satisfied customers

Have owned a repair shop for 25 yrs.

Dave Nova

Dave Nova

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7,092 satisfied customers

ASE Master Certification. GM World Class Certification

John

John

Master A.S.E Automotive technician

4,071 satisfied customers

A.S.E MasterTechnician A1-A8 w/L1,38 years experience General Motors Master Technician

Don - Mo Lurch

Don - Mo Lurch

Auto Mech / Electronics

3,023 satisfied customers

Chevrolet Cert., Heavy Line Mech, Race Shop Owner, Mobile Electronics.

Jerry Newton

Jerry Newton

Chevy Technician

2,804 satisfied customers

ASE Master Technician, L1, Master GM Technician. Over 20 years of bumper to bumper GM experience.

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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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