Why does my PCM default to 725 psi at idle?

The ICP will default to 725 PSI at idle if the PCM isn’t getting the signal. ICP LOW; if the IPR duty cycle % is high, but the ICP is low, it usually means some sort of high pressure oil leak or bad IPR. This can also be caused by IPR o-rings, high pressure pump, or injector o-rings.

What’s the ICP on a dieselsite adrenaline HPOP?

The icp on the 120hp and 140hp programs was 3081 (icp duty cycle was 58.9) and 3057 (icp duty cycle was 57.03). Pulls made on the dyno this time were alot smoother and the graph looks perfect. Now I just need the air to go with the fuel! BTW, I picked up 40 miles on the front tank alone. That’s my favorite thing about this pump. Thank you!

Which is the best high pressure oil for HPOP?

Check out the plugs and orings in the HPOP Section. The Adrenaline is the perfect high pressure oil solution for any injector setup. As expected, stock injectors won’t feel quite the “wow” that larger injectors will – but you will feel it and when towing you will wonder how you did without it.

What causes low ICP on a Ford PowerStroke?

1. Refer to other hard start or no start issues below 2. IPR (Injection Pressure Regulator) bad, will cause low ICP. Buy 7.3 IPR Valve 3. IPR o-rings bad, will cause low ICP. Buy IPR O-ring kit for 7.3 Powerstroke 4. Injector o-rings bad, will cause low ICP. Should also show up as black fuel (from oil in fuel) in fuel filter canister.

What does the pressure gauge on a tractor mean?

You will hear the engine labor since you are “Deadheading” the system, no harm will be done for the few seconds it takes to get the reading. The reading on the gauge indicates the max system pressure, that is the setting of the PRV (Pressure Relief Valve).

How can I tell if my fuel pressure is low?

The problem you are describing sounds like you are getting low fuel pressure, start with installing a fuel pressure gage on the fuel rail service port on the left rear of the rail and monitor fuel pressure when it falls on its face. You need to see 50 to 65 PSI.

What should exhaust back pressure be at idle?

Exhaust Back Pressure. Starting with the engine at idle, slowly increase engine speed to 3,000 RPM, engine vacuum should be equal to or higher than idle vacuum at 3,000 RPM. If vacuum decreases at higher engine RPM’s, an excessive exhaust back pressure is probably present.

What should the vacuum gauge be at at idle?

Starting with the engine at idle, slowly increase engine speed to 3,000 RPM, engine vacuum should be equal to or higher than idle vacuum at 3,000 RPM. If vacuum decreases at higher engine RPM’s, an excessive exhaust back pressure is probably present. With the engine Idling, the vacuum gauge pointer will drop sharply, every time the leak occurs.

Why does my PCM default to 725 psi at idle?