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Discussion Starter · #1 ·
Hello everyone, need your opinion on an LB7 issue. I just replaced injectors at 190k with 30% over. Upon completion the truck idled great no more smoke and a smooth idle; however, once I hit it hard and put engine under load it immediately starting knocking with a hideous noise. Shut off truck immediately and seemed fine after. Truck runs and drives fine when I keep acceleration under 2200 rpms. As soon as I go past that the knock comes back and spews white smoke out the exhaust. Took it to diesel shop and they ran a scanner on it, all balance rates were perfect under that rpm, but once it starting knocking injector 7 spiked at 512.0? The mechanic said he’d never seen anything like it. Any ideas? I’m sure I’ll have to end up replacing them again but wanted to check if anyone has dealt with this. Thank you in advance.
 

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Whose injectors?
X2 for what cody said, contact who you purchased the injectors from
 
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