Duramax Diesels Forum Truck of the Week
  #16  
Old 01-11-2018, 12:06 PM
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Hmm, find all the ground wires and make sure there good and have good continuity to ground. My lly has a loose ground wire on the right front of the engine that caused mis-fires and fuel knock issues with no codes.
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  #17  
Old 01-12-2018, 08:37 AM
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checked all grounds. wires are good. check good. cleaned and put back on. unplugged #1 and plugged in a different injector. seemed that the misfire went away. so i changed that injector with a different one. put it all back together. the misfire code didn't come back but it still acts up and misses. now the only cylinder that shows out of range on balance rates is #7. it goes to a 7 or 8.

im at a loss here. im wearing bolts out and patience and just waisting money on this rig. but im down to try anything that someone has seen or tried or ever heard of!

thanks guys
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2006 cc dually efi studs danville 2.5 drop in built trans fass
2005 ecsb efi ppe trans airdog 150 batmo
2007 crew cab dually ppe hot +2……stock.....sold
2002 rclb efi airdog 150……shop truck
1992 rcsb 6.0/nv4500 efi by black bear 9.25/11.5 solid axle conversion 37'' boggers (weekend warrior)
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  #18  
Old 01-12-2018, 09:46 PM
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How many miles on truck? What injectors are in the truck, stock or? Can you do a return rate test. Who tested the injectors?

Did you pull the crank sensor and ck the reluctor wheel?
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  #19  
Old 01-13-2018, 12:58 PM
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Quote:
Originally Posted by Burn Down View Post
How many miles on truck? What injectors are in the truck, stock or? Can you do a return rate test. Who tested the injectors?

Did you pull the crank sensor and ck the reluctor wheel?
X2 on checking the reluctor.
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  #20  
Old 01-15-2018, 07:23 AM
mamumtsllc mamumtsllc is offline
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Quote:
Originally Posted by stroke250 View Post
X2 on checking the reluctor.
Checked reluctor ring on crank. No play. Checked cam ref missed with efi and doesn't count up once running or missing. I can do a return rate test. I'll just have to get them set up. A injection shop checked them and said 3 failed so we put 3 new ones in it but the others was "good" I'm not sure if they are good or not now. I'm starting to doubt everything about this rig. Miles are high. Like 250k plus. And the injectors are stock.

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  #21  
Old 01-15-2018, 01:45 PM
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I suspect injectors at this point... Who’s or what injectors did you use for the 3 replaced?
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  #22  
Old 01-16-2018, 08:52 AM
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from our local injection shop that builds pumps and stuff. im pretty sure these came straight from bosch so i don't think they are junkers. but im looking to send them to s&s or scheid.
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2006 cc dually efi studs danville 2.5 drop in built trans fass
2005 ecsb efi ppe trans airdog 150 batmo
2007 crew cab dually ppe hot +2……stock.....sold
2002 rclb efi airdog 150……shop truck
1992 rcsb 6.0/nv4500 efi by black bear 9.25/11.5 solid axle conversion 37'' boggers (weekend warrior)
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  #23  
Old 01-23-2018, 07:35 PM
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I've basically pushed truck outside at this point. trying to keep my sanity. but I'm dying inside everyday not being able to figure it out. so I plan to start over on it. start at the beginning. trace wires. load test circuits. pull grounds and clean. has anyone ever developed or used a noid (I think that's the term) light? to watch the power to the injector?

I'm grasping at straws but I'm too deep to quit. and I also don't give up that easy.
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2006 cc dually efi studs danville 2.5 drop in built trans fass
2005 ecsb efi ppe trans airdog 150 batmo
2007 crew cab dually ppe hot +2……stock.....sold
2002 rclb efi airdog 150……shop truck
1992 rcsb 6.0/nv4500 efi by black bear 9.25/11.5 solid axle conversion 37'' boggers (weekend warrior)
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