timing v. pinging

[william sadler <wsadler@copper.ucs.indiana.edu>]

OK, someone tell me I am doing this right (or not)--  The
car is pinging under load (going up hill, etc.).  So, I want
to retard the spark by moving the mark on the timing wheel closer
to TDC.  Right now the timing is set at 22 degrees BTDC @ 1000RPM.  If I
move it to 18 degrees or 15 degrees BTDC the pinging should go away,
right?

Confused in Bloomington,

Will