57 or 58s

I have 58s in mine, the Cat reman 58s were better than the el cheapo route I took though.

 

@superhauler

 

I’m new to the forms and I’m not sure where to go for my problems. I have a 1999 kw T800 heavy spec truck, 1998 1LW cat 3406e and it’s has been nothing but a problem. Now my Bottom injector o-rings keep burning up. Fuel in oil, no coolant in oil, no fuel in coolant. All 6 lower injector o-rings burned away in under 50 miles. I had a platinum rebuild done 30k miles ago. Every fuel line, and ever part that has anything to do with the fuel system is new. Housings, pump, fuel cooler, pressure valve, hoses, all engine sensors, I mean everything. Well Except wire harness. Fuel pressure at idle is 100 psi and gradually gets as high as 140psi at wide open throttle. Turbo temp is low like 300-900 at peak, coolant temp never above 210. I have dumped at least 50k into this POS truck. Factory Peterbilt and cat specialist are s helping me with this truck. He is even stumped. Truck starts right up, but vibrates under a load. It pings and cylinders are definitely miss firing. We install new orings and it runs good for about 50 miles. Burns up a o ring and the cycle begins again. I can’t afford to spend any more money. This is my last ditch effort any direction or help is appreciated