Understandable there for sure. Hard/nearly impossible to find the perfect setup to do what all y'all need it to carry between buggy, family, dogs, and camper.
I’m not well versed in the Duramax platform, but is it pretty common to kill a piston when an injector fails? Is there a way to “bulletproof” it so it doesn’t happen again in the future?
Yes and no….
Apparently I had all the warning signs of failing injectors and didn’t know it.
It never really “rolled coal” but over the last few months I’d notice it was smoking a little more than normal getting up and moving. Then noticed in the evening if I had headlights behind me that I had a haze even when it wasn’t under heavy load/throttle. But I didn’t think too much of it. I chalked it up to being at higher elevation in Colorado. Man I sure miss Colorado 😩
Anyways, while I was dealing with all the stupid fan clutch shenanigans, I was also not paying attention to failing injectors. Which probably also wasn’t helping the cooling issues I suppose 🤔.
The LB7 is known for crappy injectors, but by now certainly 99.9% of them have all been replaced with the ones that solve the common failure. As the case with mine, it’s already had the motor replaced once with a Jasper.
I was told the motor had roughly 33k on it when I bought the truck, but there was no paperwork to prove that and the seller was telling me what he was told. I think he’d put roughly 8k of those miles himself. He was honest and up front about that, and the price was great.
When it blew up I called Jasper with that serial number on the block to see if it was under warranty. It was not, as it was sold in 2015. I asked if they had any idea how many miles was on the vehicle it was sold for and they said no.
So in reality, I have no idea how many miles are truly on the engine that blew up. It was originally a landscaping truck, I have no idea how it was treated before me and the previous owner. I have no idea if the replacement motor also had the injectors replaced at the same time in 2015.
I personally have ran that thing up to 235°+ a dozen times. Also, when I first got it I didn’t have an egt gauge and knowing what I know now there’s no telling how high I was getting them back then cause I was an idiot and lugging it up long mountain grades 🤦♂️
I also ran it out of fuel. Twice.
I have no idea why it blew up 🤷♂️
So, as much as the cost of a new motor with upgraded injectors is to swallow, I will have a lot more peace of mind moving forward now. And a warranty. And paperwork.