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1991 Chevrolet R3500 Cheyenne, Vacuum/Pressure/Flow Waveform
Ch A = amp probe, 1mv/ amp. Ch B = pressure transducer, 1mv/ psi. Amp probe on starter B+. Pressure transducer on cylinder #1. Cranking with WOT. Relative compression shown by current wave shows all 8 cylinders to be even.
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| Engine | 5.7 L / 8 cyl / GAS |
| Trans | 4-speed AutomaticTransmission (Electronic) |
| Delivery | Fuel Injection |
| Subsystem | Engine/Propulsion |
| Component | |
| Condition | Known Good |
Vehicle Data
1991 Chevrolet R3500 Cheyenne 5.7L
| Engine | 5.7 L / 8 cyl / GAS |
| Trans | 4-speed AutomaticTransmission (Electronic) |
| Delivery | Fuel Injection |
| Subsystem | Engine/Propulsion |
| Component | |
| Condition | Known Good |
Video