Why is my Ford 6.0L engine running rough?
Why is my Ford 6.0L engine running rough? Erratic supply of high pressure oil to injectors may cause a rough running engine. High pressure oil flow can be disrupted by faulty check valve (s) or a faulty Injector Pressure Regulator (IPR) valve. To diagnose, first perform a slow neutral run up in park/neutral. What causes a 7.3 power stroke engine to not start? 7.3 Power Stroke Diesel Common Problem #1 : Causes No Start : Injection Pressure Regulator (IPR) Valve, located in the valley on the High Pressure Oil Pump (HPOP). These can stick, seals get damaged, have the sensor...