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Rough idle
Cummins QSB (off-highway / industrial)
Spring-loaded one-way valve sits between the fuel pump and the return line and holds prime in the cylinder-head fuel galleries when the engine is shut off — the part you replace when a Series 60 cranks fine warm but turns into an extended-cranking start cold
and Donaldson P554005
1.75in I.D. Black Silicone Hump Hose | 3in Length Head Gasket Rough idleSpecifications: Wall Thickness . 17 . 22 Burst PSI 225 I. D. 1 1. 75 I. D. 2 1. 75 Leg Length N A Color Black Overall Length 3in Vacuum Rating N A Product Series Specifications: Specification Characteristics Material 5 Ply Silicone with Polyester Fabric Reinforcement Resistance Ozone & Oil Splash Resistant Applications Suitable For Heavy Duty Applications Standards Compliance Meets and Exceeds All Performance and Physical Requirements of: SAE J20 RI,
