What causes a pump suction pressure to go down?
Also, because the set point of the flow control valve FCV-101 is set to 1,000 gpm and there is no change in the pump suction pressure reading, we can rule out problems in the pump suction line. Another possible cause for a reduction in pump discharge pressure is cavitation.
How to troubleshoot a pump in a system?
This series focuses on evaluating piping systems for which calculated results do not match displayed plant instrumentation. Part 1 (“Troubleshooting Pumps in a System,” Pumps & Systems, December 2015) examined the components of the pump and drive, and the conclusion of this series will examine possible causes for an increased discharge pressure.
Why does a pump leak at low pressure?
Because the suction is at low pressure and discharge is at high pressure, there is internal leakage from the pump discharge to the pump suction around the impeller. That internal leakage is minimized in the pump design by having a close running clearance in the leakage joint.
Is the high pressure fuel pump bolted to the engine?
Past – 924T, ‘911 SC, 911 C, 911 C2, 964, 996, 996TT, 997TT, 997GT2, 430 Scuderia, 997TT, 997TTS, 991.2TTS. Macan SD. Current – Macan .2 GTS, 992 TTS The high pressure fuel pump is bolted to the engine, although I’m not sure exactly where, but I do know that when mine was replaced they had to take half the engine out!
What will prevent the high pressure fuel pump from?
The FPCM sends a PWM signal to the fuel pump, and pump speed is changed by varying the duty cycle of this signal. i have replaced the ecm, fuel rail pressure sensor, high pressure pump with a used and new pump. still no hi pres..
Where is the high pressure fuel pump located?
PS> have 60psi from the fuel pump in tank 60 psi is from the tank,, the high pressure pump is on the engine and pumps fuel to the fuel rail, some time more than 1900psi, this is the ( 2009 gm 3.6 engine with GDI system ) chevy traverse
Can a pressure washer be adjusted to increase or decrease pressure?
The unloader valve can also be adjusted to increase or decrease the pressure of water coming out of the nozzle. The exact process to increase or decrease pressure will depend on the type of unloader you have (flow-actuated or pressure-actuated). If you are experiencing a gradual loss of pressure in your machine,…
What does it mean when your engine power is reduced?
In other words: The Engine Power Reduced message is GM’s way of telling you that your car has entered a fail-safe mode. GM’s Reduced Power Mode can inhibit your vehicle’s ability to accelerate. Even if power isn’t reduced immediately, performance may be limited the next time you go to drive the car.