Chevy 350 Help!

[HULK-1]

i took it to vatozone today and got it scanned. It showed MAF or VAF low input. Jerry, i have checked the oil, its fine, no water. Fred i havent really noticed a big difference in the amount of coolant its been usingand colman all the wires are in the right place and the cap is on correctly, i marked everything. I replaced the mass air flow sensor and its still not running right so all i can think of is a vacuum leak somewhere or the cam sensor, but wouldnt that show up on the scanner if it was faulty? The distributor is also held down tight, im out of ideas on what this could be.

[robertf03]

input low usually means wiring. first clean the connector and make sure its plugged in all the way

[colman]

check for vaccum leaks at the manifold, they corrode. try spraying brake cleaner at the edges and if the idle changes then you have found your leak