Skills and Trades

Replies / Views	Last post
Inadequate purge flow rate will trigger which DTC? A) P0300 B) P0446 C) P0440 D) P0400 or ... Started by B	1 Replies 85 Views	Jun 23, 2018 by Chelseyj.hasty
Which EVAP valve is subject to rust and corrosion more than all of the others? A) Vent valve B) ... Started by drink	1 Replies 82 Views	Jun 23, 2018 by cloud
Before an evaporative emission monitor will run, the fuel level must be where? A) At least 75 ... Started by chads108	3 Replies 166 Views	Jun 23, 2018 by jomama
What is the purpose of the cooling system bypass? A) Eliminates hot spots during engine warm up ... Started by Mollykgkg	1 Replies 154 Views	Jun 23, 2018 by djofnc
A small leak is detected by the evaporative emission control system monitor that could be caused by ... Started by jon_i	1 Replies 157 Views	Jun 23, 2018 by joshbk44
What polluting chemical compound is caused by evaporating gasoline? A) Hydrocarbons B) Ozone C) ... Started by leo leo	1 Replies 157 Views	Jun 23, 2018 by meryzewe
What makes activated charcoal ideal for trapping gasoline fumes? A) Large surface area B) High ... Started by magmichele12	1 Replies 180 Views	Jun 23, 2018 by zoeyesther
Technician A says that canister purging occurs during wide open throttle conditions. Technician B ... Started by TFauchery	1 Replies 281 Views	Jun 23, 2018 by lkoler
A dirty air filter can be reused if it is first blown clean with compressed air. Indicate whether ... Started by azncindy619	1 Replies 117 Views	Jun 23, 2018 by guyanai
The vacuum-operated leak detection pump (LDP) is part of the EVAP ________ system. A) Fuel cap B) ... Started by panfilo	1 Replies 130 Views	Jun 23, 2018 by honnalora
The canister vent valve is normally ________. A) Open B) Closed[br][br][b][color=gray]Question ... Started by iveyjurea	3 Replies 129 Views	Jun 23, 2018 by jamesnevil303
What causes the nitrogen and oxygen in the air to combine and form NOx? A) Any spark will cause ... Started by lracut11	1 Replies 129 Views	Jun 23, 2018 by Madisongo23
Exhaust gas recirculation (EGR) is generally not needed under any of the following conditions EXCEPT ... Started by future617RT	1 Replies 252 Views	Jun 23, 2018 by Ashley I
Technician A says that a low-restriction exhaust system could prevent a back pressure-type ... Started by tth	1 Replies 179 Views	Jun 23, 2018 by janieazgirl
EGR is used to control which exhaust emission? A) CO2 B) NOx C) HC D) ... Started by 2125004343	1 Replies 144 Views	Jun 23, 2018 by memslove
A typical EGR pintle-position sensor is what type of sensor? A) Rheostat B) Potentiometer C) ... Started by nevelica	1 Replies 183 Views	Jun 23, 2018 by stano32
OBD-II regulations require that the EGR system be tested. Technician A says that the PCM can monitor ... Started by Haya94	1 Replies 127 Views	Jun 23, 2018 by pikon
Lubrication between two moving surfaces occurs when an oil film separates the surfaces and supports ... Started by DelorasTo	1 Replies 192 Views	Jun 23, 2018 by cam1229
The following statements are correct EXCEPT: A) OBD-II vehicles require monitoring of the EGR ... Started by Tazate	3 Replies 101 Views	Jun 23, 2018 by ecox1012
Why do many port fuel injected engines use long intake runners? A) To heat the incoming air B) To ... Started by kwoodring	1 Replies 113 Views	Jun 23, 2018 by djofnc
A vehicle comes into the shop and the technician retrieves the diagnostic code P0401 EGR flow ... Started by NguyenJ	1 Replies 260 Views	Jun 23, 2018 by bitingbit
Oil pump end clearance should be less than zero (pre-loaded). Indicate whether the statement is ... Started by D2AR0N	1 Replies 66 Views	Jun 23, 2018 by lorealeza
Which of the following are symptoms of a clogged EGR passage? A) Rough idle and stalling B) ... Started by Engineer	1 Replies 193 Views	Jun 23, 2018 by kardosa007
Which of these exhaust emissions is formed by high combustion chamber temperatures? A) HC B) CO ... Started by sc00by25	1 Replies 231 Views	Jun 23, 2018 by Tabitha_2016
Technician A says that if the PCV valve were defective or clogged, the engine could idle rough. ... Started by mrsjacobs44	1 Replies 295 Views	Jun 23, 2018 by Brenm