Hi,got a vectra sri estate 2.5 on a p reg.Has been running fine ,started it up yesterday and ran lumpy ,pulled the plugs out to check and the rear plugs 1 and 5 have no spark ,swapped plugs and leads but still no spark.I have been told the dis pack fires in pairs ,so if this is the case would that cause no spark at 1 and 5.Any advice welcome
i think it might have numbers on the coil pack to tell u which 2 fire together. cud be a dead 2 in the coil or it could be a break in the wiring loom to those 2.
Thanks to the people who answered my post.fitted new coil pack today started her up sounded sweet,took her for a spin misfiring in every gear.
brought new plugs fitted .still the same,brought new leads fitted perfect runs like a dream,dont know if the coil pack took a lead out then it went wrong
as it had only been serviced with new plugs/leads etc 4 months ago.
The only problem i have is the set of leads i brought ,the rear cylinder 1 lead is not long enough about 3 inches short had to strech it ,can i buy a seperate lead
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