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[Dr_X]

yep.....follow the coil pack back to the plug.

[twiglet]

If it's not water, then the next thing to do it whip the coil pack out and check for oil in the plug wells caused by a leaking cam cover gasket. 

Sorry should have said full service done including cam covers..

If the plugs were done the other day it's probably not that......re what chris is saying if your car is the same as mine you will have a foam pad just above the coil pack plug on the scuttle, this gets sodden with water and drips onto the plug.

If looking at the engine from the front bumper is that over the right had side(passenger side)

Were genuine GM gaskets used?

[pauls]

Yes all gm parts used.

[twiglet]

Yes all gm parts used.

Good work mate.  I'd still recommend taking out the coil pack and checking the plug wells.  Any water or oil should be fairly easy to see. 

[pauls]

Will i need to change the coil pack if i find water in there

[05omegav6]

Any water running down from the scuttle will drip straight on to the plug on the 2-4-6 coil pack. When you pull the coil pack out, spray some WD40 on to both the plug and the coil pack.

On the coil pack itself, any damage such as rust or cracking will be obvious underneath it.

HTH, Al.

Will i need to change the coil pack if i find water in there

Not necessarily, try a night in the airing cupboard first, and make sure that the plug is completely dry before refitting. If water there then the scuttle needs sealing up as per the guide.

[pauls]

Can i get the coil pack out easy or do i need to take everthing off

[05omegav6]

Two bolts that hold the cable tray to the plenum, then two bolts hold it it place, lift out and unplug

It is a bit fiddly, and you may need to unplug the plug at the back of the plenum and disconnect the vac pipe to the brake servo if they're in the way just be doubly sure to reconnect everything afterwards

[pauls]

Thanks for that just another quick question. will a coil pack from a 3lt 2001 omega fit my car

[Dr_X]

I don't think it will the 3.0 ltr 2001 I think has one coil for all six cylinders not sure though perhaps someone can confirm.....

[05omegav6]

Thanks for that just another quick question. will a coil pack from a 3lt 2001 omega fit my car

NO , in a word.

2.6 and 3.2 only both have a coil pack for each head and no plug leads. 2.5 and 3.0 have ONE pack and plug leads.

P.S. the plug for the 2-4-6 coil pack sits in just the right place to get dripped on from the scuttle. The water then runs along the coilpack seal and into the plug wells. As your misfire is at pot 2 the problem is probably at the plug. For enough water to get to plug 2, you would definitely have had a misfire at pots 6 and 4 first. Also the coil packs are handed left and right

[twiglet]

What Al said.  Gotta learn to type quicker! 

[pauls]

Just my luck. cheers guys. will let you know the out come

[Dr_X]

When you check the coil pack change the plugs around and see if the code changes cylinders......just a thought.

[pauls]

Just a update took windscreen scuttle off bone dry. managed to get coil pack off plugs bone dry. coil pack has a bit of rust round heads. no other damage i am now confused. should i now just replace coil pack.