My dads 68 stang has 289 v8, only when the car is idling its like a small mis, I am thinking the plugs are getting old, or fuel filter may need to be replaced. The car has 60,000 miles on it, Still has lots of power.

Any opinions?

 

is it stalling or just missing? Vacuum leaks at the manifold can cause a stumble, so can fouled spark plugs, or worn out points if your distributor is original style. Need more info to pinpoint the problem.

 

everything listed on the past post, it does, The misfire isnt that bad if youre in drive idling you can feel the small mis, I drove it the other day its got power, Everything on the car is stock no mods, I am just going to have to trouble shoot it, Not sure is 289 v8's have the same troubles.