Duramax Diesels Forum Truck of the Week
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Old 07-03-2011, 03:18 PM
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Default Engine noise

After driving it pretty easy came to a stone and the engine is knocking... No smoke. It is about 100* today and the truck never sees this kind of heat. Could it be fuel knock of some sort? I do not have my laptop with me either so logging isn't possible right now
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Old 07-03-2011, 03:43 PM
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Sounds like you need my built motor sooner then later On a serious note its hard to say without any logs or hearing it in person, but if all your gauges are reading normal and no excessive smoke out of the crank case or exhaust I would just run it and see if it goes away.. (Obviously check your oil/fluids) Good Luck!
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Old 07-03-2011, 04:06 PM
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Its probably 9 quarts of oil low
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Old 07-03-2011, 04:09 PM
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Oil psi is good... Recently replaced the water pump and we over torqued the nut on the balancer doubt that has anything to do with it
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Old 07-03-2011, 07:14 PM
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What are the signs of bad fuel?
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Old 07-03-2011, 08:20 PM
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stuck injector?
Attached Files
File Type: zip bad.injectors.zip (2.7 KB, 58 views)
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Old 07-04-2011, 04:48 AM
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forest through the trees brother, did you ice pick injector 5 harness ?

the rest of those values are a little funky see if they get better after the ice pick
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Old 07-04-2011, 03:48 PM
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piston skirts self-clearancing themselves on the crank?
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Old 07-04-2011, 04:52 PM
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Quote:
Originally Posted by duratothemax View Post
piston skirts self-clearancing themselves on the crank?
Oh yea babe, I know this all to familiar now
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Old 07-04-2011, 05:23 PM
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Hope its nothhing bad nick
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Old 07-04-2011, 06:43 PM
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Here's hoping its something simple Nick.
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Old 07-04-2011, 08:00 PM
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Thanks guys it is def. an injector issue, as I pulled up my driveway I heard injector rattle coming from the driver side and low and behold #5 is +15... What is "ice picking"?
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Old 07-04-2011, 08:09 PM
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Do a search its a trick for fixing lly injector harnesses but I thought it was mostly 2 and 7 that were the problem but I could be wrong.
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Old 07-04-2011, 08:12 PM
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I just found it but how can I know for sure the harness is the problem?
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Old 07-04-2011, 08:30 PM
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Sounds like to me the injector is sticking open if your +15,not sure if that is alot but a buddy of mine had injector sticking issues in his lb7 sounded just like a rod knocking.its done it to him 3 times that i know of.He tripples his power service in the fuel and it goes away
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Act like more of a human, and less like a spambot, and you'd probably catch less heat. This is "family", and it's our corner bar, and a group of guys with grease all over them leaning over fenders of somebodies truck that ain't making the right boost.

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