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S80 '06-'16 / V70 & XC70 '07-'16 General Forum for the P3-platform S80 and 70-series models |
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D4204T5 excessive oil burnViews : 16862 Replies : 50Users Viewing This Thread : |
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Aug 18th, 2023, 13:59 | #41 |
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I'm confused,
The Indy Volvo garage I spoke to said you just replace the rings, not the pistons, but this video says the rings only fit a new style pistons: https://www.youtube.com/watch?v=8yJoHgwiwio Regards, Henrik Morsing
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Aug 18th, 2023, 16:33 | #42 | |
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The replacement rings would be old-style rings, however, including oil control rings with very small drain holes that are prone to getting blocked and, to my mind, all that would do is to reset the clock for the engine, meaning that the problem might recur in a few years' time. The better fix would be to replace both the pistons and the rings with the newer design items so as to permanently fix the issue for most cars. That would increase the cost, however. To my mind, in many cases the repair cost makes the repair uneconomical as you'd be spending the value of the car to keep it on the road while adding no real value to it. In such a case it would be more cost-effective to sell the car and put both the proceeds from the sale and the would-be repair money towards buying a younger one without the problem.
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2014 Volvo V70 D4 (VEA) SE Lux Geartronic |
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Aug 19th, 2023, 08:45 | #43 | |
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Replacing this car for something similar but younger would set us back £12-15 000, that's more than the £1 000 in parts it would cost me to do this job.
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Aug 19th, 2023, 11:39 | #44 | |
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If I were able to do such work myself then I would no doubt perform a repair.
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Sep 8th, 2023, 13:27 | #45 |
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Don't use thicker oil, it could make the piston ring issue worse.
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Current Volvo XC70 D4 2WD 2.0 VED 2016 1st Volvo 740 in 1989 |
May 24th, 2024, 11:30 | #46 | |
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But, I have it from the horse' mouth that they fit old-style rings to the old pistons, hone the cylinders, replace bearings and send the head off for cleaning and skimming. I have asked to have new-style pistons fitted, at an extra £1 200, call me crazy. Car will be as new afterwards, good for another 200 000 miles, no chance would spending £10 000 on a newer car give you that.
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May 24th, 2024, 22:32 | #47 | |
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May 25th, 2024, 08:48 | #48 | ||
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That does include: - Head sent off for skimming (Valves ground and guides checked?) - New bearings (Crank as well?) - General clean-up of everything. Exactly, I wouldn't get a newer car like this for 6k. This will give it another 200 000 miles.
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May 25th, 2024, 13:53 | #49 | |
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Also, what is their level of confidence that their repair will fix the problem in your car? Have they actually diagnosed the problem with high level of confidence, e.g. a visual confirmation? (This was always a concern for me. I wouldn't want to spend lots of money without a proper diagnosis.)
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May 25th, 2024, 14:09 | #50 | |
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They looked at it once for an oil leak and said it was the rings. As the problem became worse, the car started jumping the first minute of running. We took it back there and they said the jumping was something blocking up because of the oil rings, which I now can't remember what is. They took it in for an extensive double-investigation and came back saying it was definitely the rings. Their confidence level is very high. It's had the check engine light on for a year now because the EGR keeps blocking up. Have cleaned it a few times, but it just comes back. It stink on start-up as well. I think I'll take their word for it, they seem pretty decent. If that isn't the problem, it's on them really, isn't it.
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