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Biz603 replied to the thread Volvo Penta V6-240 Fuel High Pressure Dropping to Zero.

This is very helpful. I do have several data sets as well. I'll record all I can using the test format you outlined. If I see the...

Sep 28, 2025
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Biz603 replied to the thread Volvo Penta V6-240 Fuel High Pressure Dropping to Zero.

I found the PWM in the data set in the .rec files I sent earlier. See it below at the bottom of the chart. It's measured in...
Sep 27, 2025
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Biz603 replied to the thread Volvo Penta V6-240 Fuel High Pressure Dropping to Zero.

1st paragraph - Agreed. See above. Fuel pressure to RPM Chart. This engine is running almost exactly to that chart. Injectors are...

Sep 26, 2025
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Biz603 replied to the thread Volvo Penta V6-240 Fuel High Pressure Dropping to Zero.

Checked the wiring and it was a little close to the alternator so I moved it a bit. Not even close to the coils. Put in a new MAP...

Sep 26, 2025
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Biz603 replied to the thread Volvo Penta V6-240 Fuel High Pressure Dropping to Zero.

Great read on the data and feedback. I'll get a new MAP. Not sure the wiring moved as it's mostly in a large harness running up both...

Sep 25, 2025
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Biz603 replied to the thread Volvo Penta V6-240 Fuel High Pressure Dropping to Zero.

Here is a zip file with the .rec files

Sep 24, 2025
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Biz603 replied to the thread Volvo Penta V6-240 Fuel High Pressure Dropping to Zero.

The GM part number for the pump is not on the VP pump, but it's not on the GM pump either. After realizing the VP engine was the GM 4.3...

Sep 24, 2025
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Biz603 replied to the thread Volvo Penta V6-240 Fuel High Pressure Dropping to Zero.

You can also take these files and rename the ending from .txt to .rec

Sep 24, 2025
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Biz603 replied to the thread Volvo Penta V6-240 Fuel High Pressure Dropping to Zero.

See posts above. I replaced both O2 sensors and all the fuel injectors and the bank 2 trim fault went away. It did seem like it was in...

Sep 23, 2025
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Biz603 replied to the thread Volvo Penta V6-240 Fuel High Pressure Dropping to Zero.

Try to get this back into one thread with this message. Ok. Many good points above. I'll try to answer all of them. If I miss...
Sep 23, 2025
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Biz603 replied to the thread Volvo Penta V6-240 Fuel High Pressure Dropping to Zero.

Yah, this one is very illusive. I've swapped the ECT and oil pressure sensors. I think there are 6-7 sensors that are used to...

Sep 22, 2025
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Biz603 replied to the thread Volvo Penta V6-240 Fuel High Pressure Dropping to Zero.

I would think that when it fails I'd get a DTC 0087. But I don't. I'm open to trying another new HPFP. It means replacing the high...

Sep 22, 2025
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Biz603 replied to the thread Volvo Penta V6-240 Fuel High Pressure Dropping to Zero.

I will replace the battery tomorrow and try it. My page number is different but the description was there. It seems that the throttle...

Sep 22, 2025
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Biz603 replied to the thread Volvo Penta V6-240 Fuel High Pressure Dropping to Zero.

I've attached some .rec files. Not all are up to temp. But some are slow rpm increases and holds until fail. Other are ramps to fail...

Sep 22, 2025
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Biz603 replied to the thread Volvo Penta V6-240 Fuel High Pressure Dropping to Zero.

Thanks for the reply. The HPFP is not wired for a relief valve. The internal relief valve seems to be just mechanical and set at the...

Sep 22, 2025

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