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4th February 2023, 18:19 | #1 |
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High pressure fuel pump refurb - diesel
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Last edited by JMW; 8th June 2024 at 21:46.. |
4th February 2023, 18:37 | #2 | ||
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Quote:
Personally from my own venture s into replacing the seals etc in the HPFP, i found out that the larger O-ring never needed changing, so if the bolt is really stubborn i would leave well alone. 1 2 However i changed them over seeing as i had already took the shaft out. 3 Changed the main seal as that was damaged. 4 Usually it's the ones in each chamber that need doing. 5 6
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4th February 2023, 23:26 | #3 | ||
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I think i sent you a couple of photos regarding that larger O-ring on the regulator, i have a theory that they over time perish to nothing and that is why sometime you find black goo on the tip of the metal filter. 1 2 3 4 From your photos it looks like your has been leaking for a while.
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10th February 2023, 07:58 | #4 |
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Leak is not from the main shaft. If the pump leaks from the main shaft the diesel will contaminate engine oil hence You will see an increase in oil level. If pump leaks, then the culprit is one (or more than one) of the heads of the HP pump (3 heads, see the good pictures provided by Artic.) For this jobs I would suggest a professional set of torx, better if "T" ones. Rounding torx usually means low quality spanners. It's an easy job lots of videos but takes time.
Hope this helps.
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