What should the final fuel pressure setting be?
For engine durability, it is strongly recommended that the final fuel pressure setting be 1-2 psi above the pressure that produced lean best power. 7.) The objective of changing fuel pressure is to optimize air/fuel ratio (AFR) for best wide-open-throttle (WOT) power.
What to do when fuel pressure is too high?
If fuel pressure must be raised excessively, be certain you have more fuel system than you think you need in order to assure there is enough flow when the pressure is at it’s peak.
Do you run Wot when fuel pressure is lower?
IF THE BEST PRESSURE FOR DRIVABILITY IS LOWER THAN THAT FOR WOT, DO NOT RUN WOT WHEN THE REGULATOR IS ADJUSTED FOR THE LOWER PRESSURE OR MAJOR DETONATION AND ENGINE DAMAGE CAN OCCUR! 15.) Remember, as fuel pressure is raised higher and higher, the flow available from the fuel pump gets smaller and smaller.
What should the base pressure be on a GM return system?
With a return system, the base pressure is set with the engine off, but the pump running. For a GM, this pressure is usually set to 58psi (factory fuel pressure in the rail). The vacuum/boost referenced regulator will help to change the pressure in the rail based on the pressure in the manifold.
What is the recommended tire pressure for a 51 psi max?
The heavier the load the more air pressure is needed up to the maximum of 51 psi. Most car tires need around 28–32 psi, but 4WDs a little more especially loaded. Look up the car handbook, or check the label on the door pillar to see what is recommended.
What should the fuel pressure be in a Delco?
Check the fuel pressure #1 – 60 psi to start (53 running) and if you did not use a Delco you may have a few problems with pickup and seals. Next is the the state of the last tuneup – plugs, cap/rotor/wires. More details needed.
What to do when your diesel starts then dies?
Usually should allow restart almost right away though There will also be 2 fuel pumps, one is the injection pump, probably not at fault, the other is usually referred to as a lift pump, it has to get fuel from the tank to the injection pump, if it failed or weak it will shut down or run horrible.
How long should the fuel pump run while cranking?
Answer: The fuel pump should run for 2-3 seconds with the key in the ON position, not cranking. It should run constantly while cranking. Need to have fuel pressure checked. Even though the pumps runs, does not mean the pressure is high enough.