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Duramax Fourth Generation: 2007.5-2010 (LMM) Discuss the fourth generation (2007.5-2010) of the 6.6L Duramax diesel engine & associated components. Engine related discussion ONLY.

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Old 02-07-2017, 10:06 PM   #1 (permalink)
miltwig
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Where do I go next?

So.. 2 days ago I changed the oil in my truck.
Yesterday I put 15$ of fuel in my truck just to get me into town where I always fill my truck up. Stopped to car wash on way to pump and truck died 3 miles down the road. It got pretty loud about a mile before it died. Then i just almost lost all power. Tried letting off gas and back on a couple times and it just spat and sputtered almost? Then shut off completely. So I pulled to side of road coasting. And it wouldn't restart. And hasn't since.
CEL codes are P0335 and P0676.
I just recently in the last few months replaced that glow plug. And just put a new crankshaft sensor in tonight. Still wouldn't fire. Then I replaced fuel filter for the hell of it. To seenifnthatbwas the problem. (Justbreplaced less than 3k mikes ago)
Still no start. ??
Any advice?

The only mods that I'm aware of are dpf delete. And k&n intake. Efi live 180k on the clock

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Old 02-07-2017, 10:20 PM   #2 (permalink)
sfcjones
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did you have any water in the filter when you changed it? Can you prime the filter? Is the crankshaft sensor installed correctly? Did it come unplugged?

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Last edited by sfcjones; 02-07-2017 at 10:22 PM.
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Old 02-07-2017, 10:30 PM   #3 (permalink)
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No water in the filter, yes filter is primed, the sensor can only go in one way. It's in fully seated and bolted. And no it didn't come unplugged. It was actually kind of a pain to get unplugged, bc it was built up with some sand and such from the roads. I took a video of the truck turning over bc it even sounded odd cranking. But I can't seem to figure out how to upload it.
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Old 02-08-2017, 06:20 AM   #4 (permalink)
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maybe it is time to check to see if you are getting fuel, need to put a gauge in the port and see what pressure you are getting while cranking. I would check all fuses as well. I am pretty sure you don't any air filters problems but it wouldn't hurt to check even it is just to say I checked...
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Old 02-08-2017, 07:17 AM   #5 (permalink)
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The air filter is less than a week old. I just replaced that last week. So I know it's not that. I'll check for fuel pressure tonight. I also read something about the reluctor wheel going bad.
My other thought were the injection pump. Is there a way to test it?
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Old 02-09-2017, 07:56 AM   #6 (permalink)
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https://youtu.be/gxLThD-cSNU

Here's a video of it cranking. Doesn't sound good. Maybe this can help someone help me?
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Old 02-09-2017, 08:46 AM   #7 (permalink)
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When you say"it sounded bad before it quit", did it make noises like that? I'm sorry but that sound serious. Use a pry bar and see if the crank moves in and out the front of the motor.
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Old 02-09-2017, 09:55 AM   #8 (permalink)
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It didn't make noises like this at all. It just kind of got louder at the exhaust. Like more drone from the exhaust in the cab. Then right before it died. It was almost like the traction control was activating and just didn't have anything at the gas pedal. Then it died. And this is how it has turned over ever since
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Old 02-09-2017, 10:48 AM   #9 (permalink)
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Quote:
Originally Posted by IGO1320 View Post
I'm sorry but that sound serious. Use a pry bar and see if the crank moves in and out the front of the motor.
Or Its the reluctor wheel. Pull the sensor out and shine a flashlight in the hole. Theres a plate in there that should line up with the sensor but most likely, it'd be sitting back towards the cab.

Crankshaft Position (CKP)
https://www.dieselplace.com/forum/63-...on-sensor.html
Reluctor wheel
https://www.dieselplace.com/forum/63-...el-timing.html

Last edited by Rvn4me; 02-09-2017 at 11:06 AM.
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Old 02-09-2017, 01:14 PM   #10 (permalink)
miltwig
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Quote:
Originally Posted by Rvn4me View Post
Or Its the reluctor wheel. Pull the sensor out and shine a flashlight in the hole. Theres a plate in there that should line up with the sensor but most likely, it'd be sitting back towards the cab.

Crankshaft Position (CKP)
https://www.dieselplace.com/forum/63-...on-sensor.html
Reluctor wheel
https://www.dieselplace.com/forum/63-...el-timing.html
I checked the reluctor wheel last night. As soon as I pop the sensor it's right there lined up in the hole.

I found on a separate post somewhere last night that if my CEL stays luminated while cranking there's a bad sensor somewhere. Could the new crank sensor still be bad? Also I've heard the cam sensor pretty goes along with crank sensor if one goes the other goes to? But wouldn't it throw a. Code for that?
Could the crank sensor failing cause the timing to be off and that's what's happeneing?

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