About a month ago I was driving and vehicle stopped. I pulled off to shoulder and noticed a lot of diesel leaking out of the injection pump. I had the vehicle towed home and found on Google that the screws in the rear of the pump will loosen themselves up....I removed pump and took bolts out 1 by one and used blue locktite to keep them from loosening up again. I reinstalled and it started right up and ran perfectly.....I let it sit for about a month then came back to used it and it idled horribly and revs up very slowly. I checked codes on my autel scanner. Has every cylinder on driver side code on and a 2355-1. So I replaced the glow plugs with oem parts and the glow plug controller and pcv valve assembly plu s turbo gasket. No change same code. The 2355-1 said not enough air flow I swapped mass air flows. There a are 1 for each bank. No change. I also pulled egr valve to clean it was pretty clean....do I need to get another injector pump? That's where I'm leaning
thanks