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
If the valve clearance (lash) is not correct, loosen the retaining nut and turn the valve adjusting ...
Use a torque wrench and torque the valve cover retaining bolts to factory specifications.
An overhead camshaft engine equipped with variable valve timing on both the intake and exhaust ...
When the EGR valve opens, exhaust gases flow through the valve and into passages in the intake ...
Math Joke: Be Rational, Get Real
Regurgitation or insufficiency valve disease