Smoking and misfiring!?

4.2 V8 40v biturbo - 450 bhp
4.2 V8 40v biturbo - 480 bhp (plus)
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RS620
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Smoking and misfiring!?

Post by RS620 » Wed Oct 03, 2018 3:59 pm

Looking at a buying a C5 RS6 again as one has come up cheap as has the above issues. Not viewed it yet or used Vag Com, any idea on possible causes of this?
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Shoppinit
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Re: Smoking and misfiring!?

Post by Shoppinit » Wed Oct 03, 2018 4:03 pm

Head gasket? Blown turbo? Holed piston? Can't be good. If it was an easy fix, it wouldn't be for sale as is, I suspect.
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
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simonpoulton
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Re: Smoking and misfiring!?

Post by simonpoulton » Wed Oct 03, 2018 4:08 pm

If it's the one on ebay, no mention of mileage either (number plates covered up too). If you could get a look at the smoke, colour and smell will at least help out a little bit.

One would think if its the head gasket, they would have fixed it.
Current: RS6 C5 Avant, E60 5 Series, '78 Mini (Queued for restoration)
Past: R56 Mini Cooper S
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PipRS6
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Re: Smoking and misfiring!?

Post by PipRS6 » Wed Oct 03, 2018 4:10 pm

Smoke colour and when its smoking would help a bit with diagnosis. As Shop said its unlikely its a cheap fix if they are willing to sell as it is.....
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RS620
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Re: Smoking and misfiring!?

Post by RS620 » Wed Oct 03, 2018 4:32 pm

Very true and my thoughts exactly. Looks a tidy car and my favourite colour. I think it's already at the top end price wise now and still reserve is not met. Think I will pass!
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PipRS6
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Re: Smoking and misfiring!?

Post by PipRS6 » Wed Oct 03, 2018 4:55 pm

Has anybody got a link??
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rs4wagon
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Re: Smoking and misfiring!?

Post by rs4wagon » Wed Oct 03, 2018 8:02 pm

Avus one on ebay me think?
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benh999
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Re: Smoking and misfiring!?

Post by benh999 » Thu Oct 04, 2018 7:23 am

rs4wagon wrote: ↑
Wed Oct 03, 2018 8:02 pm
 Avus one on ebay me think?
That ad just says EML on, no mention of smoking or misfiring?
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simonpoulton
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Re: Smoking and misfiring!?

Post by simonpoulton » Thu Oct 04, 2018 9:00 am

I think this is the one he was looking at: https://bit.ly/2y0QAft
Current: RS6 C5 Avant, E60 5 Series, '78 Mini (Queued for restoration)
Past: R56 Mini Cooper S
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benh999
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Re: Smoking and misfiring!?

Post by benh999 » Thu Oct 04, 2018 10:36 am

Rare RS6, I’ve never seen a C5 in grey
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PipRS6
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Re: Smoking and misfiring!?

Post by PipRS6 » Thu Oct 04, 2018 1:19 pm

There is a chance that it could just be a spark plug or a coil causing a misfire and the smoke is just unburnt fuel... I have asked him for more info! That being said if £4k didn't meet the reserve then I doubt I would be offering him what he wants for it.... haha
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