Volvo D2 slight misfire at startup?

[Dan S. MacAbre]

Missus has a Volvo V40 with (I think) the 1.6 D2 engine. When starting,
and until it's warmed up, it's a bit lumpy, and I'm guessing that it
isn't running on all cylinders. If it was a petrol engine, I'd assume
that the HT leads had got damp in the recent weather, but I'm not used
to diesels, and can't think of anything similar to look at. Do they all
do it? I don't think it's much of a problem, but you never know...

[MrCheerful]

If it has spill pipes (pretty sure it will have) they could be leaking
air back into the system, this can give a lumpy running till the air
clears. Vectras used to be well known for this. check the spill pipes
and if they look less than perfect or have damp patches then just
replace them all.

[Dan S. MacAbre]

Is that the same thing as a 'leak-off' pipe? Diesel is going to be a
bit of a new adventure for me :-)

[MrCheerful]

that is another name, little rubber pipes that lead from each injector
back into the fuel system

[Graham J]

On a Vectra, if any of these spill pipes leak air inwards when the
engine is not running, the whole system back beyond the fuel filter can
fill with air, then the engine won't start until it's cranked enough to
suck fuel from the tank to the injector pump - which can take several
minutes of cranking! And risks damage to the injector pump because it
is running dry.

It beats my why there isn't a lift pump beside the tank to overcome this.

--
Graham J