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[Damo1983]

hello i previously bought a 2.5 v6 omega auto and had problems with it misfiring i changed all plugs last night and found that some of the leads were tracking does any body know how to change leads

[sjc]

The dis-pack (combined coil and electronic distributor) is at the back of the N/S cylinder head and a bit of a PITA to get at, but removing the scuttle from under the windscreen makes access a bit better (you have to remove the wiper arms to get it off though) removing the upper inlet plenum also helps.

As always... replace the leads one at a time so you don't get them muddled up.

Here is the guide for changing the dis-pack which may be a little help..
http://www.omegaowners.com/forum/index.php?topic=90602.msg1155503#msg1155503

[alank46]

From memory you can change the leads without taking anything else off, its a bit of a fiddle though.  Most important, as already said, do the leads one at a time, because you cannot see which lead goes where on the coil pack, you have to do it by feel.
Alan

[Damo1983]

Thank you both for this i will be trying it next week have to try and find leads as cheap as i can

[tigers_gonads]

Try these 

http://myworld.ebay.co.uk/ajcompltd

Good fit and finish
Iirc, I only paid about 20 quid delivered