230 000k's service

[holden_calais_VT_1999]

spark plugs
leads
coolant flush
oil change
fluid check all round
fuel filter

now its got a lil rough idle so anything u can think of will be great

[madsav]

did u degrease the engine bay or let any water hit the coil pack? cause that could be the problem

[holden_calais_VT_1999]

yer i did clean under there a while ago but not anytime recent

[EDGE3]

check the coils

[holden_calais_VT_1999]

just checked them all fine i got all new leads and spark plugs

[])R@G()N]

you could have a dud lead or spark plug,, Also check you leads are on the right plug.

[Brett_jjj]

If the new plug leads are carbon core silicon type leads,the carbon core can be broken pretty easliy if the leads are kinked or pulled tightly during their installation, once the carbon core is broken,the lead is stuffed.Id also check for a cracked plug,its easy to crack a plug when removing or installing them.Also was the fuel filter installed around the right way with the arrow pointing toward the engine.