Skills and Trades

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Exhaust passages are included in some intake manifolds. Technician A says that the exhaust passages ... Started by xclash	1 Replies 74 Views	Jun 23, 2018 by sylvia
The digital EGR valve used on GM 3800 engines allows for how many different EGR flow rates? A) 3 ... Started by Yi-Chen	3 Replies 152 Views	Jun 23, 2018 by ju
The PCV system controls which exhaust emission(s)? A) CO B) HC C) NOx D) Both A and ... Started by urbanoutfitters	1 Replies 62 Views	Jun 23, 2018 by parshano
Technician A says that the PCV system should create a slight pressure in the crankcase at idle. ... Started by Kthamas	1 Replies 49 Views	Jun 23, 2018 by cloud
Two technicians are discussing exhaust check valves used in SAI systems. Technician A says that they ... Started by audie	1 Replies 84 Views	Jun 23, 2018 by Ksh22
Where is the output of the AIR pump directed when the engine is cold? A) Air cleaner assembly B) ... Started by folubunmi	1 Replies 87 Views	Jun 23, 2018 by amanda_14
The average gasoline engine uses ________ gallons of air for every one gallon of gasoline burned at ... Started by urbanoutfitters	1 Replies 162 Views	Jun 23, 2018 by nanny
In what year did PCV system monitoring become mandatory? A) 1996 B) 2004 C) 1988 D) ... Started by washai	1 Replies 80 Views	Jun 23, 2018 by matt
An electric SAI pump is controlled by ________. A) The PCM B) Manifold vacuum C) A vacuum switch ... Started by piesebel	1 Replies 132 Views	Jun 23, 2018 by mcomstock09
In closed loop at idle speed, the AIR pump sends air to the ________. A) Atmosphere B) Air ... Started by cabate	3 Replies 63 Views	Jun 23, 2018 by Madisongo23
What is applied to the ceramic substrate to make the surface porous? A) Honeycomb filler B) ... Started by stevenposner	1 Replies 104 Views	Jun 23, 2018 by asdfghjkl;
Which exhaust gas reading indicates a good catalytic converter? A) O2 is zero B) CO is zero C) ... Started by jayhills49	1 Replies 99 Views	Jun 23, 2018 by Beatricemm
Technician A says that the catalytic converter is warranted for 8 years or 80,000 miles, whichever ... Started by Mimi	1 Replies 78 Views	Jun 23, 2018 by momtoalll
The addition of cerium to catalytic converters provided what benefit? A) Reduction of NOx B) ... Started by LaDunn	1 Replies 100 Views	Jun 23, 2018 by smrtceo
Two technicians are discussing coil-on-plug ignition systems. Technician A says that they can be ... Started by sc00by25	1 Replies 75 Views	Jun 23, 2018 by bigsis44
Which of these components sends a pulse signal to the electronic ignition module? A) Resistor B) ... Started by fox	1 Replies 213 Views	Jun 23, 2018 by gasdhashg
Two technicians are discussing electromagnetic induction. Technician A says that the induced voltage ... Started by Kikoku	1 Replies 59 Views	Jun 23, 2018 by livaneabi
An ion-sensing ignition system has the ability to detect ________. A) Cylinder misfire B) Engine ... Started by ec501234	3 Replies 159 Views	Jun 23, 2018 by shewald78
Which item is NOT important to know before starting the diagnosis of an engine performance problem? ... Started by yoroshambo	1 Replies 64 Views	Jun 23, 2018 by snackralk
An ignition coil is an example of a ________. A) Step-down transformer B) Relay C) Step-up ... Started by Beheh	1 Replies 83 Views	Jun 23, 2018 by ntsoane kedibone
Two technicians are discussing ignition coils. Technician A says that some ignition coils have the ... Started by Kthamas	1 Replies 123 Views	Jun 23, 2018 by bd5255
Where is the force of magnetic lines strongest in a bar magnet? A) In the middle of the magnet B) ... Started by armygirl	1 Replies 80 Views	Jun 23, 2018 by ghepp
The preferred method to clear DTCs is to ________. A) Remove the computer (PCM) Power feed fuse ... Started by luvbio	1 Replies 89 Views	Jun 23, 2018 by srodz
Which of these devices is used to control high amperage circuits (50 amps or more)? A) Spark plug ... Started by fnuegbu	1 Replies 66 Views	Jun 23, 2018 by Silverbeard98
A transistor is controlled by the polarity and current at the ________. A) Base B) Collector C) ... Started by sheilaspns	1 Replies 137 Views	Jun 23, 2018 by swimkari