non turbo, spark plugs are new volvo brand. age of cap and bug are unknown but appear to be in good in good shape copper and all. I would not think that the plug wires were a problem as the car comes on strong after 4 grand. This is my around town car, were it my highway car I would replace these co...

my 1994 850 5spd. seems to have uneven power under hard acceleration up to about 4 grand , after which it pulls strong and hard, any thoughts on what I should look for ?? Wilbur