STD Tuning Engine E-pump inlet pressure

E-pump inlet pressure

E-pump inlet pressure

 
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AlanMcR
mind - blown

400
12-24-2020, 03:05 PM #16
The system does not recover well from any air in the IP.  Any air in the IP at startup will get pushed into the high pressure lines immediately.  Then you are in for a long crank-fest to push the air out through the injectors. It doesn't matter how quickly the lift pump pushes the air out of the IP, because the air embolism has already been shoved into the injection lines.

As a starting point for diagnosis.  Next time, when shutting down the engine, clamp off the tank return line.  See if you get the same amount of air in the lines.  If the air is gone, then you know that air is getting into the return line. Probably because it doesn't go to the bottom of the tank.
This post was last modified: 12-24-2020, 04:24 PM by AlanMcR.
AlanMcR
12-24-2020, 03:05 PM #16

The system does not recover well from any air in the IP.  Any air in the IP at startup will get pushed into the high pressure lines immediately.  Then you are in for a long crank-fest to push the air out through the injectors. It doesn't matter how quickly the lift pump pushes the air out of the IP, because the air embolism has already been shoved into the injection lines.

As a starting point for diagnosis.  Next time, when shutting down the engine, clamp off the tank return line.  See if you get the same amount of air in the lines.  If the air is gone, then you know that air is getting into the return line. Probably because it doesn't go to the bottom of the tank.

 
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Messages In This Thread
E-pump inlet pressure - by 50harleyrider - 07-06-2018, 06:07 AM
RE: E-pump inlet pressure - by AlanMcR - 07-10-2018, 12:48 PM
RE: E-pump inlet pressure - by Mr.Emo - 07-11-2018, 01:43 PM
RE: E-pump inlet pressure - by AlanMcR - 07-11-2018, 04:08 PM
RE: E-pump inlet pressure - by Mr.Emo - 07-12-2018, 03:25 AM
RE: E-pump inlet pressure - by AlanMcR - 07-12-2018, 11:11 AM
RE: E-pump inlet pressure - by CutWeldDrive - 07-13-2018, 05:19 PM
RE: E-pump inlet pressure - by 50harleyrider - 12-22-2020, 03:47 PM
RE: E-pump inlet pressure - by AlanMcR - 12-22-2020, 04:14 PM
RE: E-pump inlet pressure - by 50harleyrider - 12-22-2020, 04:47 PM
RE: E-pump inlet pressure - by AlanMcR - 12-22-2020, 05:16 PM
RE: E-pump inlet pressure - by 50harleyrider - 12-23-2020, 01:39 AM
RE: E-pump inlet pressure - by 50harleyrider - 12-23-2020, 03:55 PM
RE: E-pump inlet pressure - by AlanMcR - 12-23-2020, 09:56 PM
RE: E-pump inlet pressure - by 50harleyrider - 12-23-2020, 10:15 PM
RE: E-pump inlet pressure - by AlanMcR - 12-24-2020, 03:05 PM
RE: E-pump inlet pressure - by 50harleyrider - 12-25-2020, 12:05 PM
RE: E-pump inlet pressure - by AlanMcR - 12-26-2020, 10:56 PM
RE: E-pump inlet pressure - by 50harleyrider - 12-27-2020, 01:33 PM
RE: E-pump inlet pressure - by AlanMcR - 12-27-2020, 03:20 PM
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