Changing The Spark Plugs On Vectra V6

[cavwebmaster]

http://www.vectra-sport.com/discussion/messages/9/5663.jpg

Remove the EGR valve plug (left arrow) and unbolt the black plastic box with the thin pipes going in and out (don't know what this is called but it is the right arrow) and the device in front of the box (right centre arrow) both require female and male torx bits to remove (2 bolts on each item).

Once they are removed simply use a pair of long nose pliers (or an alternative plastic tool) to pull the plug lead heads off the spark plugs (disconnecting the leads from the distributer cap end will help things at this point and dont squeese to hard on the heads of the plug leads as you may crack the ceramic inside) and withdraw the spark plugs with a long extention bar and plug socket (the back left plug lead is a little fiddly but it does come through the hole directly above it.

[cavwebmaster]

Addition from Martin Pickering:

Had to change the spark plug leads recently because the damn garage used
your method to change the plugs during a service. I suffered occasional
but severe misfiring for three weeks before we traced the cause to splits
in the rubber plug caps. Although a plastic tool was actually present one
one of them, the garage (or a previous one) had clearly used pliers and
ripped the caps.

Changing the leads is a pigging nightmare. I got an autoelectrician to do
it. Afterwards he commented that he'd "never done one of these before".
I'm pleased he didn't tell me beforehand! It took 1.5 hours.

Basically, the manifolds come off relatively easily. Just a matter of
releasing the clips with long-nose pliers (or preferably the correct
tool!) I'd recommend removing the manifolds just to change the plugs as
you are less likely to damage the leads.

The leads go into plastic conduits. The new "pattern" leads came without
so we had to split the old conduits and slide them onto the new leads
*after* the leads had been fitted in place. Easier said than done. There
was much bleeding and swearing.