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Registered
Join Date: Feb 2007
Posts: 98
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Duramax issue
2003 Duramax diesel
Truck has run flawlessly. Late last week, noticed that rather than starting after turning over 5 or 6 times, it seemed to be dragging on a bit. No real problem after starting truck ran fine, pulled hard, no stumbling or smoke at all. Saturday am, truck spun over and over, no sign of starting. Checked pressure at fuel filter, all good. Turned it over again, stabbed the throttle a few times, then held it to the floor, started right up. Then same story ran fine, no issues. I figured maybe glow plugs, get a diesel mechanic buddy to scope the truck, and nothing wrong, and of course since Saturday morning truck has fired instantly and run fine. I hate the thought of mystery issues. Any wisdom from the brain trust???? |
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10-30-2017, 11:58 AM
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FUSHIGI
Join Date: Feb 2006
Location: somewhere between here and there
Posts: 10,752
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bad fuel?
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10-30-2017, 11:59 AM
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Brew Master
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I had a problem like that on an old Ford 7.3 that ended up being a loose injector harness connection. I don't know how the Duramax works but it might be worth looking into.
I just glanced through this but you might take a look http://www.duramaxforum.com/forum/911-problems-forum/2600-2005-gmc-duramax-wont-start.html Last edited by cabmandone; 10-30-2017 at 12:09 PM.. |
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10-30-2017, 12:05 PM
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UnRegistered User
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One of the batteries going bad?
My dads old powerstroke would spin but not start if one of the dual batteries was down on charge.
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Bill K. "I started out with nothin and I still got most of it left...." 83 911 SC Guards Red (now gone) And I sold a bunch of parts I hadn't installed yet. |
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10-30-2017, 12:53 PM
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fuel filter..or rather that fuel filter housing thing.
my brother's truck did this and he found himself needing to bleed the system quite often. he said he found a tiny crack at the housing. i think he bought an alum, aftermarket unit.
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poof! gone |
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10-30-2017, 01:03 PM
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Registered
Join Date: Apr 2007
Location: Van Nuys Calif.
Posts: 124
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What Bill said
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Still one place to go. |
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10-30-2017, 05:59 PM
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....
Join Date: Feb 2008
Posts: 18,807
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Give it a bump of brake clean down the blow hole.
Is it only cold or hot? Early dirtymax's have known injector issues. But it doesn't sound like that is your problem. Batteries, glow plugs are my vote.
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dolor et pavor Copyright |
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10-30-2017, 06:32 PM
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Cars and Cappuccino
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Run some diesel kleen additive and then look at the Fuel filter housing. Also, consider installing a fuel lift pump/filter combo. We did this to our 2003 GMC. The factory pump is a little underpowered. If it is still misbehaving, probably the dreaded injector replacement.
See this thread: Lift Pump ? - Page 3 - Chevy and GMC Duramax Diesel Forum I can't recall the brand (not Airdog) that we went with , but it is a combo water separator/fuel filter type pump. Uses Caterpillar and Baldwin filters. Mounts on the frame rail right behind the cab. UPDATE: Found the link to pump builder. Duramax Fuel Filter Kit Last edited by tdw28210; 10-31-2017 at 03:53 AM.. |
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10-31-2017, 02:01 AM
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Registered
Join Date: Jan 2012
Location: NW Ohio
Posts: 9,733
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On my 7.3 Ford, I have had fuel filter issues that wouldn't allow the right amount of fuel to the motor, and also a faulty crank angle sensor that wouldn't allow it to start....just cranked.
On the subject of glow plugs, they are used to warm the fuel at the point of ignition when it's below about 50 degrees, which helps the motor fire in cooler/cold conditions. You may have 1 or more faulty glow plugs, or a glow plug relay that isn't working. A small shot of starting fluid in the intake should make it instantly fire (not too much). I always run Diesel kleen with every tank full. Last edited by ckelly78z; 10-31-2017 at 02:39 AM.. |
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10-31-2017, 02:35 AM
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Cars and Cappuccino
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Looks like this when installed. Wish the factory would have put something like this on the truck from day 1. But I imagine the bean counters kept them from doing it.
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http://www.carsandcappuccino.com 1987 Grand Prix White "Outlaw" Turbo Coupe w/go-fast bits 1985 Prussian Blau M491 Targa 1977 Mexico Blue back-dated,flared,3.2,sunroof-delete Coupe 1972 Black 911 T Coupe to first factory Turbo (R5 chassis) tribute car (someday) |
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10-31-2017, 03:52 AM
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cycling has-been
Join Date: Sep 2004
Location: Jersey Shore
Posts: 7,238
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The filter assemblies on all the TDI's also have the H2O drain on the bottom.
Undo the retaining strap, lift filter, drain, reinstall on bracket - done. All hoses remain connected. Bill K
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73 911T MFI, 76 912E, 77 Turbo Carrera |
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10-31-2017, 07:18 AM
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Registered
Join Date: Mar 2004
Location: Los Angeles
Posts: 17,404
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Quote:
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10-31-2017, 08:00 AM
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Registered
Join Date: Aug 2002
Location: MD
Posts: 5,733
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Really depends on how clean your tank is and what you put in it, I know, not what you were looking for. Every ~15k miles seems like a standard recommendation.
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10-31-2017, 09:15 AM
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Registered
Join Date: Mar 2004
Location: Los Angeles
Posts: 17,404
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I change filter every 15k or every third oil change. Its not driven that much
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10-31-2017, 09:19 AM
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Registered
Join Date: Jul 2003
Location: Valencia Pa.
Posts: 8,859
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I change my filter once every year. just because. It is $25.00. Injectors, and the cp3 pump, are big money. I doubt it will be glow plugs. my truck at 160k will start instantly , in the dead cold, without even cycling the glow plugs . Last one I put injectors in , really fought me to get the fuel system bled. It ended up being a small leak in the fuel filter housing .
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No left turn un stoned |
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10-31-2017, 12:24 PM
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1985 Porsche 911 Cab
1983 Porsche SC
