1991 Chevrolet R3500 Cheyenne, Vacuum/Pressure/Flow Waveform

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Posted to the Waveform Library on 7/24/2004

Channel A = High amp probe on starter B+ feed set to 1mv/ amp. D/C coupled with single shot trigger.

Channel B = Pressure transducer set to 1mv/ psi. Transducer in cylinder # 3.

Trigger = cylinder #1 secondary ignition.

Cylinder #2 spark plug removed. Co...

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	Vacuum/Pressure/Flow
Condition	Known Bad

References

THEORY: Cylinder Pressure Waveforms

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	Vacuum/Pressure/Flow
Condition	Known Bad

References

THEORY: Cylinder Pressure Waveforms