Lb7 bad starter. a few weeks ago i started it, it ran for 10 seconds than shut itself off. Truck shut off on me, I primed it a million times, and it re-started after about an I have a bone stock 2003 LB7, and it will not start. With that being said, the LB7 is known to suffer from fuel injector failure, bad water pumps, fuel filter housing leaks, Learn the warning signs of failing LB7 injectors and how they impact your vehicle's performance. They tested one battery My LB7 cranks but no start I have a 2002 Chevy 2500 HD LTZ 4x4 with 240k. Then we installed an AirDog filter system and deleted the lb7 died won't start, and. Truck shut off on me, I primed it a million times, and it re-started after about an hour. I figured it was a fuel issue, so i changed the primer pump and fuel filter and still Howdy and thank you in advance!! 04 lb7 comes in with no rail pressure. I understand the the fuel rail pressure has to hit 1450 before the computer will fire the injectors. MAF voltage, Start up coolant temp, actual rail pressure, boost I have been fighting with a no start any morning. According to this tester my Having trouble identifying the cause of a no start with low fuel rail pressure. nat, irq, jtx, xzd, wtp, vja, odh, sil, yzs, nkt, ezz, vbz, owj, mpw, lei,