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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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Glowplug replacement queriesViews : 1161 Replies : 11Users Viewing This Thread : |
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Jul 20th, 2018, 15:13 | #1 |
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Glowplug replacement queries
I have a 2008 V70 2.4D auto (163 BHp D5 engine) and in the winter it always runs roughly for a few seconds after starting although it's never failed to start. Suspecting a glowplug issue, I finally got around to checking the DC resistance of the glowplugs.
Three of them read less than 1 ohm, one is about 20 ohms and one is open circuit so I reckon one is dead, another useless and the remaining three are probably OK. So, do I just replace the dead ones or, on the basis that the rest can't be far behind, all of them? Are they best removed and replaced when the engine is cold or warm? I should welcome your thoughts. Many thanks Martin |
Jul 20th, 2018, 15:20 | #2 | |
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Jul 20th, 2018, 16:10 | #3 |
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That's what I was thinking too. I believe the recommended torque for installing them is 8 nm which is the lowest setting on my Norbar torque wrench; the merest nip really.
If they don't loosen with with little more torque than that, I shall be leaving it to my local dealer to do. I don't want to run the risk of breaking them. Many thanks. Martin |
Jul 20th, 2018, 17:57 | #4 |
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Several small squirts of a proper penetrating oil over a few days then remove them on a warm engine.
Use a proper fitting, hexagonal glow plug key. Dead easy.
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Jul 20th, 2018, 22:12 | #5 |
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Sounds good advice. I have an 8mm deep socket, a proper hexagon one and some 'Eezit' graphite penetrating oil I inherited from my Father in Law. It probably convenes any COSHH regulations but usually works very well. Hopefully they should do the job.
I didn't have any difficulty with the glow plugs on my other V70, a phase 1 with the D5252t Audi engine but the cylinder head was off and the glow plugs were altogether more robust affairs. Many thanks Martin |
Jul 23rd, 2018, 10:16 | #6 |
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[QUOTE=Martin Cox;2427703]Sounds good advice. I have an 8mm deep socket, a proper hexagon one and some 'Eezit' graphite penetrating oil I inherited from my Father in Law. It probably convenes any COSHH regulations but usually works very well. Hopefully they should do the job.
I managed to change the plugs in my P2 very easily. I have a can of original plus gas penetrating oil again probably breaks all the Coshh regs .
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The secret of flight is to aim at the ground and miss ! Previous Volvos 740 GLE . V40 CD ,V70 2.4 SE LPT.V70 D5 P2. V70 D5 Se Lux P3. Current Jaguar XF Sportbrake but still like Volvos |
Jul 24th, 2018, 00:57 | #7 |
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No product breaks COSHH regs! The regs concern the correct handling of hazardous chemicals in the work place. You have to record the procedures employed to safely handle any given hazardous substance and make these instructions available to employees. There are safe handling procedures for weapons grade plutonium so handling it does not contravene the COSHH regs, so a little bit of penetrating oil, if handled safely is quite legal.
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Jul 28th, 2018, 13:47 | #8 |
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In the end I opted to change the two dead ones. Very straightforward. A deep 8mm hexagon socket and extension and my torque wrench did the job quite painlessly.
Of course it started perfectly but at 28 degrees Celsius, I doubt the glow plugs were doing anything at all. Martin |
Jul 29th, 2018, 08:44 | #9 | |
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Not done them on the volvo, on the landrover which in truth will start in minus temps without them I treat them as a service item and change every couple of years. About a £1 each and easy to get at. Paul. |
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Jul 29th, 2018, 11:51 | #10 |
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They're needed for regenerations so you always want them all working.
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