R
ryan corbett
Guest
" I have a 1993 5.7L 260hp Mer
" I have a 1993 5.7L 260hp Merc and when the engine starts it sounds and rides rough. There is also a clicking noise coming from some part of the engine(possible valve?). When out on the water it takes more time for the boat to get on a plane. I did a compression check and found all at 155 execpt one (when looking at the engine from the front of the boat, its on the right side 2nd from the back) which was at 95. I have replaced the starter,dist. cap, plugs,manifolds,risers. What could possibly cause the engine to sound rough. Could it possibly be miss firing? The marina said that one cylinder at 95 shouldn't cause the boat to be that sluggish. I have noticed my gas milage as been terriable since replacing the risers and manifold. Could this be cause by the valve problem? Thanks Ryan C. "
" I have a 1993 5.7L 260hp Merc and when the engine starts it sounds and rides rough. There is also a clicking noise coming from some part of the engine(possible valve?). When out on the water it takes more time for the boat to get on a plane. I did a compression check and found all at 155 execpt one (when looking at the engine from the front of the boat, its on the right side 2nd from the back) which was at 95. I have replaced the starter,dist. cap, plugs,manifolds,risers. What could possibly cause the engine to sound rough. Could it possibly be miss firing? The marina said that one cylinder at 95 shouldn't cause the boat to be that sluggish. I have noticed my gas milage as been terriable since replacing the risers and manifold. Could this be cause by the valve problem? Thanks Ryan C. "