305 burning oil issues

[Kfnelson]

I got a 305 with 104,000 on it. No signs of leaks. No blue smoke or blow by. Burning up about a quart of oil in about 120miles on average. Any ideas???

 

[yevgenievich]

check pvc valves, then would check with a vacuum gauge(search for vacuum gauge test), compression check, leak down check. Also verify no cross contamination of oil and coolant