When to do a residual fuel pressure test?
To validate its ability to do just that, there is a simple residual fuel pressure test that will be performed at the same time as the other fuel tests before initial engine startup.
Can a bad fuel rail sensor cause a stall?
Improper supply of fuel to the engine will cause an unexpected stall. No matter what you try, the engine will often not start again. If this happens frequently, the fuel rail pressure sensor might not be working properly enough to send the correct information to the vehicle’s onboard computer.
What do you need to know about fuel pressure?
This is the fuel pressure gauge setup needed to check the system pressure (set by the fuel distributor) and the control pressure of the Warm Up Regulator. The adapters in the center came with the guage and can be used to plumb into the the fuel lines in differing ways.
Where does fuel enter a high pressure pump?
Fuel delivered by the supply pump flows through a fuel gallery along the length of the high pressure pump and is introduced into the plunger/barrel assembly via one or two fill or intake ports, Figure 3 [529].
Why does EFI pump need constant fuel pressure?
EFI requires constant and stable fuel pressure to operate consistently. Though there are many ways to deliver fuel to a fuel injection system, some are better than others in certain applications. If an electric EFI pump ever sucks air, it will drop fuel pressure immediately causing drivability issues.
Is there a problem with Ford 460 fuel pressure regulator?
For problems related to fuel delivery / pressure on FI Ford 460 7.5. Tried this on 2 90 F350’s and both times replacing the regulator fixed the problem. But both trucks had totally opposite symptoms Loading…
What are the symptoms of a bad fuel pressure regulator?
The symptoms are very noticeable, too. You may notice a very rough idle, rough acceleration, slow acceleration, and vibrations from the engine. There are also many causes of engine misfires. It can be a problem in the spark plug or the ignition coil.
This is the fuel pressure gauge setup needed to check the system pressure (set by the fuel distributor) and the control pressure of the Warm Up Regulator. The adapters in the center came with the guage and can be used to plumb into the the fuel lines in differing ways.