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 Startup Thud on 3.0l Turbo Diesel Super Custom

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spannera
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Home City : Toowoomba Australia
Registration date : 2008-06-24

PostSubject: Startup Thud on 3.0l Turbo Diesel Super Custom   Tue Jul 01, 2008 10:28 am

Hi,

I have a 95 Super Custom Auto 3.0l, and everytime we start it, it makes a thud towards the rear middle of the engine bay. Has anyone else had this experience. it's done it since we owned it 1 month ago.

Any help appreciated.

John
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alfazar
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Number of posts : 99
Home City : N.Ireland
Model and year : 3.0TD 4WD camper 1995
Registration date : 2008-03-11

PostSubject: Re: Startup Thud on 3.0l Turbo Diesel Super Custom   Tue Jul 01, 2008 10:41 pm

Sounds like a worn engine mounting maybe?? It maybe doesn't thud on normal driving but a diesel engine can shake a bit as it catches on startup. My 3.0DT doesn't suffer, but had an old diesel Ford Fiesta once that did this.
Al
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BreadBin
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Number of posts : 9
Registration date : 2008-04-24

PostSubject: Re: Startup Thud on 3.0l Turbo Diesel Super Custom   Thu Jul 03, 2008 10:08 am

My 2.4 has done this since I adjusted the fuel pump timing, maybe yours has been 'played with'
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browneye
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Registration date : 2008-01-21

PostSubject: Re: Startup Thud on 3.0l Turbo Diesel Super Custom   Fri Jul 04, 2008 6:55 am

I have a 95 super custom and mine does this aswell...not every time, only about once in every 20 or 30 starts, and hasnt done it for ages actually....

Tends to do it when the starter takes that lil bit longer to start the engine...dunno what it is, but it sure looks like the engine moves a fair bit when it happens, which may indicate engine mount somewhere? I plan to ask my mech next time I take it in, or ill get under it and take a look, my front ones looked ok last time i was under her tho...hmm

I am keen to find out what this is tho, as its pretty loud.
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pushrod
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Number of posts : 140
Home City : S Bucks
Model and year : 1990 2.4 TD 2wd Ltd
Registration date : 2008-01-03

PostSubject: Re: Startup Thud on 3.0l Turbo Diesel Super Custom   Fri Jul 04, 2008 10:42 am

Could it be something as simple as a duff glo-plug? One cylinder firing 2 or 3 revs late - on twice the fuel?
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Clockman
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PostSubject: Re: Startup Thud on 3.0l Turbo Diesel Super Custom   Thu Jul 10, 2008 4:03 pm

This is caused by the rear gearbox mount failing. The rear end of the box hangs on a ring shaped mount with the mounting bolt through a rubber doughnut held by the metal ring. This rubber fails allowing the mount bolt to contact the metal ring,but also retains it securely. Not at all unsafe ,but as the engine starts up the mount bolt kicks against the metal ring causing what seems to be an alarming noise.A common fault on this model and easily fixed. On an MOT test this is an advisory fault not a fail.
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spannera
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PostSubject: Re: Startup Thud on 3.0l Turbo Diesel Super Custom   Fri Jul 11, 2008 3:32 am

Thanks heaps for your responses. Ill let you know how i go. By the way, with the glow plug response, I notice that when I turn the car to get ready to start, the glow plug light on the dash stays on for less than one second. My experience with other diesels is a bigger warming time. Is this a sign of a bad glow plug?
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pushrod
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Number of posts : 140
Home City : S Bucks
Model and year : 1990 2.4 TD 2wd Ltd
Registration date : 2008-01-03

PostSubject: Re: Startup Thud on 3.0l Turbo Diesel Super Custom   Tue Jul 15, 2008 2:31 pm

I think they have fast warm-up gloplugs - my light stays on for a couple of seconds, though......
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jimsmim
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Model and year : VW TRANSPORTER T5 LWB poptop camper
Registration date : 2007-11-17

PostSubject: Re: Startup Thud on 3.0l Turbo Diesel Super Custom   Tue Jul 15, 2008 4:15 pm

the length of time the light is on has nothing to do with the actual glow plugs being on or off..... if you listen .... you'l hear the glow plugs switch off.... a distinct click usually about 2 -3 mins after engine was initially started.... Very Happy
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BreadBin
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PostSubject: Re: Startup Thud on 3.0l Turbo Diesel Super Custom   Wed Jul 23, 2008 8:51 pm

Aha so that's what the click is!
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