i'd leave her alone for now, add a little of that "engine restore" it comes in 4-6-8 cylinder cans, it helped alot on my 94 chevy with 196,000 miles.

1949 Chevy 3600 Flatbed all orginal
1964 gmc 4000
1973 gmc 6000
2005 chevy duramax 4x4
1994 chevy 1500
Trucks are GM and Tractors are Orange

"I don't measure a man's success by how high he climbs but how high he bounces when he hits bottom." - General George S. Patton