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C30 / S40 & V50 '04-'12 / C70 '06-'13 General Forum for the P1-platform C30 / S40 / V50 / C70 models |
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Injector Failure? Diagnosing Which One?Views : 947 Replies : 4Users Viewing This Thread : |
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Oct 4th, 2022, 20:27 | #1 |
New Member
Last Online: Jan 9th, 2024 16:20
Join Date: Jan 2019
Location: Wirral
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Injector Failure? Diagnosing Which One?
Hi,
Recently been suffering an issue with my 2008 V50 2.0D (unsure what engine exactly but has the single port throttle body). Runs really lumpy on startup like its misfiring, plus blows out a load of white smoke, once it is running the smoke clears. When it is up to temp it runs better but still feels like is it hunting and missing. Had it in a local garage today and they have diagnosed a faulty injector. Do they have to be coded in or can I pick up a second hand injector and fit it? Is there anyway to diagnose the faulty one myself, on my old petrol cars I could read the resistance on them to determine the faulty one - can this be done on diesel injectors? Thanks! |
Oct 5th, 2022, 08:08 | #2 |
Bungling Amateur
Last Online: Today 07:23
Join Date: Aug 2014
Location: Beverley, East Yorks
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The injectors aren’t individually coded as such but they come in a number of different classes, all four should match and if you change all four to a different class then you need to update the setting in the ECM. I think the class code relates to the diameter of the injector internals and hence fuel delivery. The class is marked on the plastic cap on the very top of the injector.
However…. I’ve seen several engines running acceptably well with mixed injectors, though I wouldn’t personally recommend it, especially if you have a DPF equipped car. From memory there are a number of test functions in VIDA where you can shutdown individual injectors and see the impact on RPM and also view on-going self learning compensation - I think… Have a read of this, it refers to the same engine, https://frenchcarforum.co.uk/forum/v...ic.php?t=60311 (not the specific fault but how to identify injectors)
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2011 XC90 D5 Executive 2003 C70 T5 GT 2012 Ford Ranger XL SC 1977 Triumph Spitfire 1500 1976 Massey Ferguson 135 Last edited by Tannaton; Oct 5th, 2022 at 08:12. |
Oct 5th, 2022, 12:01 | #3 |
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White "Smoke" on start up is often/usually a sign of coolant entering a cylinder as a result of e.g.a leaking head gasket. Have you checked your coolant level?
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Oct 5th, 2022, 12:27 | #4 |
Bungling Amateur
Last Online: Today 07:23
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Location: Beverley, East Yorks
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I would sniff it whilst someone starts the car, if it smells diesely then it's fuel, if it's steamy and quickly disperses then water...
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2011 XC90 D5 Executive 2003 C70 T5 GT 2012 Ford Ranger XL SC 1977 Triumph Spitfire 1500 1976 Massey Ferguson 135 |
Oct 6th, 2022, 07:37 | #5 |
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Last Online: Feb 9th, 2023 08:16
Join Date: Jun 2021
Location: Heule
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My experience with injectors comes from the 1.6 D2 engine (D4162T), so I'm not sure if this applies to the 2.0D.
All 4 of my injectors were going bad, but the one on cylinder no 2 was in the worst condition. VIDA would tell me if there was a problem with an injector and which one. So I had a code of "fuel offset max limit" for injector 2. This way I knew this one was bad. Did you read the codes in the car using VIDA? In case of the 1.6D2, the injectors have a specific code on them which needs to be entered in the CEM. I did this using VDash. They also need adaption which is done using VIDA. This software is uploaded by the dealer first (as I did not have this yet). But once you have it you can do the adaptation yourself. I later replaced the rest of my injectors, coded and adapted them myself and they have been perfect for more then a year now. |
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injectors, misfire, smoke, v50 2.0d sport |
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