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12th November 2019, 19:46 | #11 |
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The waste gate problem was fixed a couple of years ago, and has been okay since, though I suppose it is possible it might of stuck again.
Regarding suggested Turbo check, when it is revved up, the smoke is white to grey, not black, and does not really smell of oil. The engine does not seem to be using much oil. Thinking about the smell, it maybe the clutch, it is that sort of smell, gets to the back of your nose a bit ! Phil |
12th November 2019, 20:01 | #12 |
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A smoking clutch smells different from any of the usual smells we're familiar with around cars. When I first experienced it, I thought what the Hell's that? I suppose a glowing brake disc would elicit a similar odour from the pads.
What year is the car? TC |
12th November 2019, 20:48 | #13 |
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It's a 2003 model.
Phil |
13th November 2019, 16:23 | #14 |
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Then to eliminate Fuel Filter Syndrome, I suggest you remove the left side hatch in the floor under the rear seat. This gives access to the fuel filter module. Remove the large steel locking ring so the module can be lifted a few inches. Visually check it to see if a Fabled Orange Clip is present. If not, fit one. Image linked from: https://the75andztclub.co.uk/forum/s...ad.php?t=58868 TC Last edited by T-Cut; 13th November 2019 at 16:26.. |
13th November 2019, 22:32 | #15 | |
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Quote:
I think clutch slip is unlikely to be the cause of the smell - you would notice the revs rising without proportionate speed increase, or alternatively, revs only dropping slowly as you let out the clutch when changing up. The mechanic I asked to diagnose my juddering clutch took over 30seconds of revving the engine while heel-toeing the brake as he let the clutch slowly out before burning smells and smoke appeared. (The handbrake wouldn't hold it). When I changed the clutch a few weeks later, having driven the car another 2,000 miles, the friction material was so thin, the rivet heads had been worn off, and the friction material was loose, yet the car was still capable of motorway+ speeds, as long as you didn't accelerate too quickly. |
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14th November 2019, 16:56 | #16 |
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Took it down to my local garage, as it was booked in for the MOT, and they had a look, and found the wastegate was seized solid, they have managed to free it off and got it working again, so hopefully this might be the problem, or at least part of it.
Phil |
15th November 2019, 00:45 | #17 | |
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If the Wastegate was seized in the closed position - this would cause Overboosting and Fuel Cut - there would be a considerable enough increase in Power output from the Engine prior to fuel cut - potentially enough to slip the clutch briefly - this could explain the Squealing Noise and the Smell. Paul. *to add - the Increase in Boost pressure also makes a more audible... i'd say whistle...but maybe squeal ? - just prior to reaching fuel cut Last edited by Sheraton; 15th November 2019 at 00:52.. Reason: addition |
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15th November 2019, 09:06 | #18 |
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Hi Paul, yep, I think that explains things nicely. The wastegate was stuck in a closed position, so it seems that was the problem, causing the overboost ! Maybe a whistle describes the noise better !
Drove it home last night, it's only 5 miles, but it seemed fine, lots of power and it now revs without cutting out. It even passed the MOT with no advisories for a change ! Thanks again for everyone's help and ideas. Phil |
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