Volkswagen T5 Transporter Shuttle - 08 2.5 Engine fumes in cabin: Motoring Technical Car/Motor Issues forum

Technical Car/Motor Issues > Volkswagen T5 Transporter Shuttle - 08 2.5 Engine fumes in cabin
Thread Author: Boxsterboy	Replies: 5

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Mon 12 Mar 12 22:54

Volkswagen T5 Transporter Shuttle - 08 2.5 Engine fumes in cabin - Boxsterboy

I am getting engine fumes through the air vents, and much as I normally like the smell of burnt diesel, there is a limit. It's only noticeable at idle. The seal between the engine bay and the scuttle seems ok but I can hear a very faint hissing (above the rattle of the engine) when I lift the bonnet, so I'm guessing the manifold gasket may be leaking slightly. Any more enlightened suggestions?

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Mon 12 Mar 12 23:02

Volkswagen T5 Transporter Shuttle - 08 2.5 Engine fumes in cabin - Zero

Could be a leaking breather pipe, they smell "hot oily"

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Sat 17 Mar 12 14:39

Volkswagen T5 Transporter Shuttle - 08 2.5 Engine fumes in cabin - Dave

Are you sure it's not the aux heater, as they usually exhaust under/at the back of the engine bay.

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Sat 17 Mar 12 18:14

Volkswagen T5 Transporter Shuttle - 08 2.5 Engine fumes in cabin - Boxsterboy

I don't think so. Looking on the VW forums suggests it might be a disintegrating or blocked particulate filter (!) causing exhaust gases to blow back, but there are no warning lights to suggest a fault there, and the engine runs just fine.

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Tue 20 Mar 12 22:09

Volkswagen T5 Transporter Shuttle - 08 2.5 Engine fumes in cabin - Boxsterboy

Update: it's the manifold gasket that was leaking, but of corse the bolts holding the manifold are corroded into the block!

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Sat 21 Apr 12 14:57

Volkswagen T5 Transporter Shuttle - 08 2.5 Engine fumes in cabin - cmp

sorry to be bearer of bad news, but these exhaust manifolds get cracked welds right by the block ( they are not made from cast iron but sheet metal)
Google it, youll see what I mean. Im in the middle of fixing mine now ;-(

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