Skills and Trades

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Technician A says that carbon inside the engine can cause excessive NOx to form. Technician B says ... Started by Deast7027	3 Replies 126 Views	Jun 22, 2018 by vish98
A clogged EGR passage could cause excessive ________ exhaust emissions. A) HC B) CO2 C) NOx D) ... Started by hubes95	1 Replies 69 Views	Jun 22, 2018 by nathang24
A vehicle is undergoing a SHED test. What is being measured? A) Evaporative emissions B) Zero ... Started by tiffannnnyyyyyy	1 Replies 115 Views	Jun 22, 2018 by Dinolord
OBD-II equipped vehicles are required to turn on the malfunction indicator lamp if the system has ... Started by BrownTown3	1 Replies 217 Views	Jun 22, 2018 by Moriaki
Most high milage vehicles cannot pass an exhaust emission test. Indicate whether the statement is ... Started by j.rubin	1 Replies 60 Views	Jun 22, 2018 by vickyvicksss
Two technicians are discussing clogged EGR passages. Technician A says clogged EGR passages can ... Started by Ebrown	1 Replies 92 Views	Jun 22, 2018 by cascooper22
How much air flows through the PCV system when the engine is at idle speed? A) 1 to 3 B) 10 to 20 ... Started by a0266361136	1 Replies 103 Views	Jun 22, 2018 by isabelt_18
Technician A says that low battery voltage can cause driveability problems. Technician B says that ... Started by jjjetplane	1 Replies 77 Views	Jun 22, 2018 by lorealeza
Technician A says that if a PCV valve rattles, then it is okay and does not need to be replaced. ... Started by nelaaney	3 Replies 167 Views	Jun 22, 2018 by owenfalvey
Two technicians are discussing testing a catalytic converter. Technician A says that a vacuum gauge ... Started by Alygatorr01285	1 Replies 119 Views	Jun 22, 2018 by yahahah24021
A P0401 is being discussed. Technician A says that a stuck-closed EGR valve could be the cause. ... Started by tfester	1 Replies 207 Views	Jun 22, 2018 by kilada
EGR is designed to lower which exhaust emission? A) CO B) NOx C) HC ... Started by krzymel	1 Replies 58 Views	Jun 22, 2018 by Jossy
All of the following statements are correct EXCEPT ________. A) Some systems use a delta pressure ... Started by faduma	1 Replies 48 Views	Jun 22, 2018 by Moriaki
Which tool could be used on Ford OBD I systems to retrieve DTCs if the STAR tester is NOT available? ... Started by lbcchick	1 Replies 51 Views	Jun 22, 2018 by ApricotDream
What term is used to describe combustion gasses leaking past cylinder rings? A) Crankcase ... Started by james0929	1 Replies 163 Views	Jun 22, 2018 by nital
Which step should be performed LAST when diagnosing an engine performance problem? A) Performing ... Started by Cooldude101	1 Replies 104 Views	Jun 22, 2018 by shaquita
A paper test can be used to check for a possible problem with ________. A) A burned valve B) A ... Started by yoooooman	3 Replies 142 Views	Jun 22, 2018 by allisonblackmore
At what temperature is the catalytic converter fully effective? A) 420 deg F B) 100 deg F C) 500 ... Started by CharlieWard	1 Replies 76 Views	Jun 22, 2018 by JCABRERA33
How many steps does the textbook outline for a systematic diagnostic procedure? A) Six B) Four C) ... Started by roselinechinyere27m	1 Replies 73 Views	Jun 22, 2018 by meganlapinski
Which diagnostic step is the most important aspect of diagnosis? A) Retrieve the trouble codes B) ... Started by WWatsford	1 Replies 69 Views	Jun 22, 2018 by Danny Ewald
Technician A says that an analog scope can store the waveform for viewing later. Technician B says ... Started by wenmo	1 Replies 169 Views	Jun 22, 2018 by efwsefaw
Setting the time base to 50 ms per division will allow the technician to view a waveform how long in ... Started by chads108	1 Replies 184 Views	Jun 22, 2018 by miss_1456@hotmail.com
A throttle position sensor waveform is going to be observed. At what setting should the volts per ... Started by clmills979	1 Replies 89 Views	Jun 22, 2018 by mbcrismon
A digital meter that can show waveforms is a ________. A) DMM B) DVOM C) GMM D) ... Started by Chelseaamend	1 Replies 120 Views	Jun 22, 2018 by amandalm
A digital storage oscilloscope is set to begin displaying a waveform when a certain voltage is ... Started by lb_gilbert	3 Replies 173 Views	Jun 22, 2018 by strudel15