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
The camshaft is rotated in relation to the camshaft by the PCM to provide changes in valve timing.
A vane phaser is used to move the camshaft using changes of oil pressure from the oil control valve.
Badly burned exhaust valve. A compression test could have detected a problem, and a cylinder ...
Some plastic intake manifolds are equipped with a pressure relief valve that would open in the ...
PCV valve operation in the event of a backfire.
Real skeleton of a lion