What is a redundant gas valve?
A) a gas valve that has no real purpose
B) a gas valve that was once necessary on older furnaces but is no longer used
C) a gas valve that is used in case the main valve quits working
D) a gas valve with two valves mechanically in series
Question 2
What could cause the tungsten electrode to turn gray or blue?
A) The operator had only 1/4 to 1 inch stick out, and that is not enough to prevent electrode burning.
B) Not enough electrodes stick out.
C) Answers A and B are both correct.
D) Not enough post flow
E) Too much post flow
With all vacuum lines and the intake tube removed, the valve cover can be removed after removing all ...
With all vacuum lines and the intake tube removed, the valve cover can be removed after removing all ...
A General Motors linear EGR Valve.
A PCV valve shown in a cutaway valve cover showing the baffles that prevent liquid oil from being ...
Marketing: Real People, Real Choices
Determine the # of real roots from the equation