V6 spark plugs - bit of a job!

I thought Subarus were a pain in the neck with a flat four and having to
remove half the gubbins on each side of the engine to get to the plugs!

However, my 69500 mile 406 V6 was a bit reluctant below 4000 RPM so I bought
(2x4 pack ) plugs. Front bank is easy under the engine cover and the coil
packs lift off.

But to do the rear bank I had to remove the whole inlet
manifold/plenum/throttle body!

Masterpiece of design there Peugeot. Are all V6s like this - I've never
really looked.

Good news it that there is now a much smoother performance below 4000 RPM
with no sudden wild cam feel at 4000 RPM, but much more torque below.

 

Is it a difficult job, apart from being a pain in the arse ? I've thought
about doing mine (spend a lot of time working on my racebike, so I'm pretty
mechanical), but I'm curious how big a job it is.

Cheers,
Brian from Oz
98 406SV(E?) with a heap of kms

 

Well I did the wife's Puma first and that took 15 minutes. This took 90
minutes. Not difficult, just rather cold doing it when the temperature was 3
degrees.

 

If you are doing it I suggest getting a new inlet manifold gasket. Mine
split in a few places and I ended up using sealant. It is not leaking, (not
like it is under boost or anything ), and where it split and was adherent
to the inlet manifold the other matching part was still adherent to the
block.

 

Thanks John, much appreciated.

Cheers,
Brian