Going down the road steady-state…45…55 mph can feel engine is not smooth…it “bucks,” it’s a 62 318 poly…my 350 in my 58 DeSoto did this and I put in new condenser…fixed it. Tried it on this 318…didn’t work. Have also changed points and coil too. Still does it. Engine is not a smooth idler either. Did compression test. Range from 125-140 all 8 cylinders. Think it could need a valve adjustment? Thanks…
