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850 / S70 & V70 '96-'99 / C70 '97-'05 General Forum for the 850 and P80-platform 70-series models |
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850 tdi fuel pump timing rangeViews : 561 Replies : 6Users Viewing This Thread : |
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Jun 9th, 2022, 20:49 | #1 |
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850 tdi fuel pump timing range
Hi just a very quick question for a change does anybody know the range of the diesel fuel pump timing before it will throw up fault codes?
When I first got my car it was -16° out and had a fault code i changed the belts and got it lower but never really got it to zero. Currently its running just around +3° and occasionally it will throw up a fault code. I've heard its best to run it positive for performance so I want to keep it higher but just not so high that it throws the engine light on |
Jun 9th, 2022, 21:47 | #2 |
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Based on my own experience whilst setting the timing on my V70 Tdi, I think you've about 3 to 4 degrees either side of zero before engine management light comes on.
Martin |
Jun 12th, 2022, 14:10 | #3 |
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Thank you martin. my timing had moved a bit since I changed the belts. It had gone up 2 degrees so I've set it again at about +1° and seems to have stopped the engine light issue which is good news.
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Jun 12th, 2022, 16:55 | #4 |
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If the timing is changing and continues to change, it is worth asking why? Particularly if it's above and beyond what might be expected from new belts settling in.
Martin |
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Jun 18th, 2022, 14:09 | #5 |
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Yes it certainly is. I have purchased all new litens tensioners to replace the gates ones I put on when I did the belts.
I've heard a lot of people having trouble with tensioners so going to replace them for peace of mind. |
Jun 27th, 2022, 22:04 | #6 |
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Last Online: Feb 20th, 2023 17:43
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I found the cause of the issue.
My cambelt tensioner spring had snapped and taken out the little pin that holds it in position. Luckily I caught it before the cambelt lost tension completely. |
Jun 27th, 2022, 23:53 | #7 |
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Well done. A timely discovery which might otherwise have had unpleasant consequences.
Martin |
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