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| geobloke Member Since: 06 Nov 2012 Location: Nottinghamshire Posts: 4388  
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It is quite possible the garage that fitted the turbo did not adjust the waste gate properly. Basically the turbo never gets to full boost.
You might have noticed more black smoke upon acceleration. To adjust this properly you will need a boost gauge and a 10mm spanner. https://youtu.be/XCD3uNpomtE |
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30th Oct 2022 5:56pm |
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| 90roy Member Since: 21 Jun 2016 Location: Middlesbrough Posts: 130
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Brilliant. Thanks. I'll take a look. 300tdi 90 1996.
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30th Oct 2022 7:23pm |
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| 90roy Member Since: 21 Jun 2016 Location: Middlesbrough Posts: 130
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Just had a quick look, and I think my waste gate may be stuck as I can't move it by hand. Should I be able to do this?
If it is stuck, can I free it off or is it a new one required? There seems to be a bit of oil near the 6mm pip which goes to the actuator. Does the 6mm rubber pipe carry air, or oil? Thanks, Roy 300tdi 90 1996. |
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30th Oct 2022 7:35pm |
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| 90roy Member Since: 21 Jun 2016 Location: Middlesbrough Posts: 130
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Also noticed a whistling noise all the time when driving it. 300tdi 90 1996.
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30th Oct 2022 8:56pm |
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| sako243 Member Since: 08 Jul 2014 Location: Wales Posts: 1185  
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Is the whistling new if so may be a hose not properly done up or split. Usually downstream of the turbo. Ed
82 Hotspur Sandringham 6x6 95 Defender 110 300Tdi |
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31st Oct 2022 8:58am |
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| geobloke Member Since: 06 Nov 2012 Location: Nottinghamshire Posts: 4388
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The actuator has quite a spring attached to it. With a pair of pliers or mole grips clamp on to the non-threaded half of the bar and try to move it. If it seems stiff spray with some light oil and work the lever until it is free. The oil will "burn off" when the turbo gets to temp but the oil will help with the process. Stuck waste gates are a fairly common problem. Unusual on a new turbo but it could happen I guess. The whistling noise could be just that your turbo is new and working (sort of) but go around the intake pipes and make sure they are connected to the intercooler/manifold/turbo properly. It is also worth check for splits in the rubber pipes. |
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31st Oct 2022 9:02am |
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| markb110 Member Since: 22 May 2010 Location: Guildford Posts: 2520  
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Just another thought, or something to check as it happened to me once when I had my 300TDI.
The garage had left a rag in the pipe between the air filter and turbo. No harm done, I guess they blocked the pipe as a precaution but then forgot to remove it! |
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31st Oct 2022 12:57pm |
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| jst Member Since: 14 Jan 2008 Location: Taunton Posts: 7682 
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Check all air intake hoses. Sounds like one is not fixed correctly. Cheers
James 110 XS Utility 130 Puma Station wagon/camper (in the making) 90 Puma Hardtop |
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31st Oct 2022 3:28pm |
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| Devon-Rover Member Since: 22 Jan 2015 Location: South Devon Posts: 906 
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Could be a few things.
Lift pump not playing ball? Hose not on correctly as suggested? the boost reference pipes for the turbo wastegate also deal with the injector pump on boost fueling just a case of going through it all. Also can be found on Fb, Ytube, Insta & Twitter @4WDSouthwest |
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31st Oct 2022 11:27pm |
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| 90roy Member Since: 21 Jun 2016 Location: Middlesbrough Posts: 130
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Thanks all.
I have a lot of checking over to do at the weekend, but its nice to have somewhere to start. Thanks again for all the advice. Roy 300tdi 90 1996. |
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2nd Nov 2022 6:41pm |
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| spudfan Member Since: 10 Sep 2007 Location: Co Donegal Posts: 4473 
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This would have an effect on the running of the vehicle. Just like a dirty airfilter will stop your vehicle runnung well. 1982 88" 2.25 diesel 1992 110 200tdi csw -Zikali 2008 110 2.4 tdci csw-Zulu 2011 110 2.4 tdci csw-Masai |
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5th Nov 2022 4:43pm |
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| 90roy Member Since: 21 Jun 2016 Location: Middlesbrough Posts: 130
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It'sthe wastegate valve actuator which is goosed.
Does this mean a new turbo is needed, or can it be stripped and freed off/rebuilt? Any help appreciated. 300tdi 90 1996. |
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9th Nov 2022 6:43pm |
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| 90roy Member Since: 21 Jun 2016 Location: Middlesbrough Posts: 130
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Replaced turbo and wastegate actuator today and it's not made much difference really. Maybe a bit quicker to pick up at speeds below 50, but top end power is still a problem. It takes ages for me to get to 70 and if I encounter a slight gradient it slows down to 60ish. I have no chance of getting it to 85 (defender top speed) unless I'm going down hill 😁
I chose not to replace the manifold (incl wastegate) as I could not work out how to take off the cast iron elbows for cylinders 1 and 4 from my old one, and fit to the new. Does anyone know how to do this? Could there be another issue with the engine to make the top end speed restricted? Cheers in advance... R 300tdi 90 1996. |
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20th Nov 2022 4:22pm |
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| jfh Member Since: 08 Jan 2014 Location: West Coast Posts: 348  
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Lift pump most probably.
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21st Nov 2022 2:12pm |
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