 | Home > Puma (Tdci) > A faint whistle - engine speed related |
 
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| pope10001 Member Since: 15 Oct 2011 Location: Dulverton Posts: 489   
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Sounds like a leaking turbo gasket to me.
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26th Aug 2013 12:43pm |
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| spudfan Member Since: 10 Sep 2007 Location: Co Donegal Posts: 4665 
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If it were gasket related would it not make noise all of the time?
Would there not be a drop in power from such a leak. Rossy said "which mostly occurs when you take your foot off the pedal to slow down. " When you take your foot off the pedal your revs drop so the vehicle is quieter. Maybe it is standard turbo whistle not normally audible owing to road noise from the wide tyres and the engine noise. Would James French not have noticed anything untowards turbo gasket wise when they test drove it? I only hear the turbo when I ease off the power and things quieten down. A leak would imply a pressure drop which would effect power. If you don't notice any difference when overtaking I'd say all is O.K. If there was a leak in the gasket would you not be able to detect this at the gasket? 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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26th Aug 2013 8:26pm |
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| keith Member Since: 15 Aug 2012 Location: Edinburgh Posts: 2212 
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Cracked inlet manifold ?
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26th Aug 2013 8:51pm |
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| custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 20382
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My goodness all you lot are trying to put the fear of god into him think with what "could" be wrong.
Mine does the same in the same way also, it's the turbo spooling down if you ask me when the revs drop off the engine noise is reduced and the turbo is more audible for this reason. $W33T $0U7H3RN $UG4R 🇬🇧ðŸ´ó §ó ¢ó ¥ó ®ó §ó ¿ðŸ´ó §ó ¢ó ·ó ¬ó ³ó ¿ðŸ´ó §ó ¢ó ³ó £ó ´ó ¿ðŸ‡®ðŸ‡ªðŸ‡ºðŸ‡¸â›½ï¸ðŸ›¢ï¸âš™ï¸ðŸ§°ðŸ’ª |
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26th Aug 2013 9:03pm |
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| rossy Member Since: 29 Nov 2010 Location: Co. Roscommon Posts: 1296 
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I hope you're right custom90steve ! Sounds like the right answer to me  I only mentioned it because I haven't heard it before and like most Def2 guys I have a sixth sense for wierd and unusual noises that weren't there before. In 2 years and 32k kms it only started a couple of days ago. Funny, in my last motor a lack of audible turbo whistle meant something was wrong ! |
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26th Aug 2013 9:24pm |
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| spudfan Member Since: 10 Sep 2007 Location: Co Donegal Posts: 4665
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Ears recently syringed? 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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26th Aug 2013 9:27pm |
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| custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 20382
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If you feather the throttle in a gear for example 4th is a good one you will notice it on flat ground. Just a faint tap and then off and that'll likely be when you notice. I always find it's when the revs drop and when not under load. So always flat ground or slightly heading downhill. $W33T $0U7H3RN $UG4R
🇬🇧ðŸ´ó §ó ¢ó ¥ó ®ó §ó ¿ðŸ´ó §ó ¢ó ·ó ¬ó ³ó ¿ðŸ´ó §ó ¢ó ³ó £ó ´ó ¿ðŸ‡®ðŸ‡ªðŸ‡ºðŸ‡¸â›½ï¸ðŸ›¢ï¸âš™ï¸ðŸ§°ðŸ’ª |
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26th Aug 2013 9:28pm |
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| pope10001 Member Since: 15 Oct 2011 Location: Dulverton Posts: 489
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A leaking gasket is hardly scary!
It cost around £15 with new nuts and about an hour of my time to fix. |
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27th Aug 2013 5:58am |
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