How is fuel delivery controlled by the PCM?
Fuel delivery is controlled by pulse width modulation. The PCM varies the on-time or dwell of the MAXI injector to control the air/fuel mixture. The injector driver circuit uses the peak-and-hold method, providing 4 amps to open the injector and about 1 amp to keep it open.
What is the average rating of a fuel pump relay?
Average rating from 198 customers who received a Car is stalling Inspection. The fuel pump relay is an electronic component that is found on virtually all vehicles equipped with an internal combustion engine.
What kind of noise does a fuel pump make?
No noise from the fuel pump. Another symptom that may hint at an issue with the fuel pump relay is no noise from the fuel pump when the key is switched on. Most fuel pumps will produce a low volume hum or whine which can be heard from the inside the vehicle if listened for closely, or from the outside of the vehicle, near the fuel tank.
What should the fuel pressure be on a 4.3L V8?
This is where you’ll connect your fuel pressure gauge (the first photo, in the image viewer, is of a 4.3L, and the second of the V8 engine). NOTE: In case you’re wondering, the factory manual specifies that the fuel pressure for the CSFI system should be between 56-62 PSI.
What’s the difference between 95 and 98 petrol?
1. Engine Protection. The main difference between 95 petrol and 98 petrol is ‘knock’ resistance. ‘Knock’ is the pinging sound you get in your engine when the petrol inside is unable to resist the high pressures and explodes unexpectedly.
What kind of fuel delivery system does a 454 engine use?
This is an aspirated fuel delivery system with the addition of a mixture control system controlled by the ECM. It is not even close to the ECM used today. This fuel delivery system uses a mechanical fuel pump with the addition of an inline lift pump between this pump and gas tank on some systems to help prevent vapor-lock.
Is there a KDP on a 94-98 Cummins?
In fact, KDP-related failures are more common on ’94-’98 engines—but this is due to significantly more ’94-’98 engines being produced than ’89-’93 versions. As is the case with all ’89-’02 5.9L Cummins power plants, the best way to rule out the KDP is to tear into the front of the engine and tab the pin in place.
Where is the fuel pump located in a 454 engine?
Evaporation emission control system. The injector fuel control systems have a electric fuel pump, located in the fuel tank on the gauge sending unit. It pumps fuel to the throttle body and the direct fuel injector system through the fuel supply line and then through an in-line fuel filter.