I had to replace all the brake lines including the proportioning valve because the car sat in a garage for 9 months. The engine had a terrible miss and would spit every once in a while. Could never tell if it would stall at a traffic light. Turned out to be a vacuum line. Runs excellent now.
A lot of reviews I've read on this vehicle talked about the poor performance of the 307 Olds engine, but I've found that replacing the vacuum lines and setting the timing gives the engine all the power she needs.
You had to replace all the brake lines because it sat in a garage for 9 months?
Was the garage under water?
The 307 is pretty slow compared to the Chevy engines used in later years and the Cadillac engines used in the 70's models. The 307 had about the same accelleration as a 4100 powered car. My 87 Brougham had 0-60 times of 15-16 seconds. Not to mention how slow it was off the line. My 91 Brougham with the 305 Chevy took only 10-11 seconds to go from 0-60,was much faster off the line, and had better fuel economy. I like the 307 for it's smoothness and durability, but I much rather have the 305 or 350 Chevy.
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