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S80 '98-'06 / S60 '00-'09 / V70 & XC70 '00-'07 General Forum for the P2-platform S60 / V70 / XC70 / S80 models |
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new pump high fuel pressureViews : 1200 Replies : 27Users Viewing This Thread : |
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May 20th, 2022, 21:53 | #21 |
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fuel pump return line
return line on the fuel pump
Last edited by wrgallant; May 20th, 2022 at 21:55. Reason: image |
May 20th, 2022, 23:06 | #22 |
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but fuel returning from where exactly ?
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May 20th, 2022, 23:43 | #23 |
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fuel return line
i'm going to add a T after the fuel filter and make my own return line to the pump
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May 21st, 2022, 12:16 | #24 |
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Don't do anything like that it will be expensive to revert back .. Return from where ? you need to know how it works before you can fix anything ... you said yourself it doesn't have a return line on the fuel rail. or a pressure regulator in the lines around the fuel filter area ..
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May 23rd, 2022, 12:18 | #25 |
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s60 high fuel pressure
Success! looks like the previous owner replaced the fuel line between the pump and filter.
They eliminated the return connection to the pump when they did. I put a T in the pressure line back to the pump return connection and now my fuel pressure is down to about 60. |
May 23rd, 2022, 13:09 | #26 | |
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Quote:
Its much easier to understand when it is there in front of you of course 😃
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May 23rd, 2022, 13:18 | #27 |
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s60 high fuel pressure
Regulator is inside the cover of the pump - when pressure in the return line gets above 50, the valve opens and dumps fuel back into the pump,
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May 23rd, 2022, 15:43 | #28 |
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ok so where does the other end of that return line go to ? I am trying to determine which of the 3 systems you have .. It wont be the PEM system by your chassis number .
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2002 s60 fuel pump |
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