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Are my glow plugs knackered?

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Old Dec 27th, 2009, 13:18   #11
chopper_harris
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Get your injectors tested for leakback rates - pound to a penny you have at least one with excessive leakback.

This prevents the common rail reaching the pressure to activate the ECU, hence the prolonged cranking required to build up the pressure (> 10,000 psi).

This test should cost you around £40 at an independent diesel specialist (Less than the cost of one one glow plug).
Don't get it done at a main agent, they will charge you more.

What you do next is well documented on this site

Last edited by chopper_harris; Dec 27th, 2009 at 13:20.
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Old Dec 27th, 2009, 13:23   #12
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dont pay anyone , do it yourself:
Take all the return pipes off the top of the injectors , put some cloth around the injectors to absorb any spill .
get someone to crank the engine ... you will probbaly see one or two injectors leaking excessivly like a small fountain those are the ones you need to renew ....
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Old Mar 7th, 2010, 12:58   #13
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Sorry to bring this old topic back up, but with other potential issues to look into, I thought I might as well check this one through too and hit the dealer with everything at once.

Car has been sluggish to start, often taking up to 15 seconds to start in the morning, so I figured I'd check the injectors for leak-back since it sounds like something simple to check for myself.

Can anyone confirm that you just remove the engine cover, then pull the tubing (black - cloth covered) off the injector heads?

I did think at first I'd have to take out the retaining clip and remove the metal section underneath, but the tubing looks to be easier. I have tried to remove one tube, but it seems pretty solidly connected. Perhaps more Weetabix before I try again lol
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Old Mar 7th, 2010, 13:14   #14
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yes pull out the metal clips first then the plastic unions will pull out with a little twisting .. if you try and remove the rubber pipes from the plastic the unions may break !
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Old Mar 7th, 2010, 13:26   #15
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Thanks Clan. I found that the unions were metal to the pipe too, so took the pipes off.

Ok, tested and found 3 injectors are fine (no feedback at all), but 2 have some feedback. On a 20cm piece of tubing, the fuel was rising approx half-way on a turn of the engine...

Issue added to the list and the wife's now asking if I've bought a lemon...
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Old Mar 8th, 2010, 13:59   #16
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Well the dealer has said that he will look into it for me, but he wants the car for a week at least based on him taking the injectors out to be sent to a local specialist for testing. If a fault is confirmed, then send them away for cleaning/reconditioning then re-installation.

Sounds like a right pain for me, since I need the car to get around every day, and he doesn't have any courtesy cars

Surely it can't be that hard for them to remove the injectors, have them tested the same day and replace them with new/already re-conditioned injectors from the shelf would it? Would a diesel injector specialist not hold onto new/recon for stock?

Checking online, Eurocarparts have them for £121 each (recon) (Injector) that could probably be collected and installed the same day if a garage had the right mind...

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Old Mar 8th, 2010, 14:56   #17
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Ok, garage have a set of known good injectors in from another car they were working on, they have offered to swap them over.

Is this likely to cause an issue with regard to the class of injector if (for an extreme example) we swapped a class 1 for a class 3? Would consumption be affected?

I'm thinking of asking them to purchase the injectors from Eurocarparts as mentioned above, given that they are only £121, and then I've got a good set of injectors with absolutely no issue. Since the dealer would have to send mine away for testing & recon anyway, costing probably the same if not more than this, it makes more sense to me...
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Old Nov 7th, 2011, 15:23   #18
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Does any one here have some pictures on how to replace glowplugs on a Volvo S60 D5 the year is 2003, thanks.
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Old Apr 11th, 2020, 13:38   #19
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Default Glow plug test

With time on my hands these days, I set about testing the glow plugs on our 2003 D5. I am aware they only operate in low temperatures, however, all 5 tested 2.4 ohms and glowed when connected to a battery on the workbench.
No problems starting V70 in winter/summer. Simon's video says the resistance should be 1 ohm or less. Soooo - should I change them?

Jude
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Old Apr 11th, 2020, 15:27   #20
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Quote:
Originally Posted by jnmonaghan View Post
With time on my hands these days, I set about testing the glow plugs on our 2003 D5. I am aware they only operate in low temperatures, however, all 5 tested 2.4 ohms and glowed when connected to a battery on the workbench.
No problems starting V70 in winter/summer. Simon's video says the resistance should be 1 ohm or less. Soooo - should I change them?

Jude
no they will be ok , you get a specific fault code if they are faulty it tells you which one .

Be very wary testing glow plugs on 12 volts the newer ones are 7v and you can easily blow them!
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