Skills and Trades

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A vehicle fails an emission test due to excessive carbon monoxide indicating a rich air fuel ... Started by karlynnae	1 Replies 34 Views	Aug 13, 2021 by mtmmmmmk
A vehicle failed an emission test due to high carbon monoxide and hydrocarbons in the exhaust gas. ... Started by karen	1 Replies 36 Views	Aug 13, 2021 by morganmarie791
A fuel tank expansion chamber is designed to be what percentage of the tank capacity? Started by AEWBW	1 Replies 301 Views	Aug 13, 2021 by carlsona147
A dizzy feeling or a headache could indicate the presence of carbon monoxide (CO). Started by rayancarla1	1 Replies 29 Views	Aug 13, 2021 by lindahyatt42
Which gas is generally considered to be the rich indicator? (The higher the level of this gas, the ... Started by Tirant22	1 Replies 46 Views	Aug 13, 2021 by Anton
Which gas indicates efficiency? (The higher the level of this gas, the more efficient the engine is ... Started by nramada	1 Replies 32 Views	Aug 13, 2021 by jessofishing
Technician A says that high HC emission levels are often caused by a fault in the ignition system. ... Started by Metfan725	1 Replies 34 Views	Aug 13, 2021 by efwsefaw
Technician A says that carbon inside the engine can cause excessive NOx to form. Technician B says ... Started by frankwu	1 Replies 108 Views	Aug 13, 2021 by gasdhashg
Some states have a testing program that uses I/M 240 testing procedures. The number 240 refers to ________. Started by altibaby	1 Replies 48 Views	Aug 13, 2021 by verrinzo
HC and CO are high and CO2and O2are low. This could be caused by a ________. Started by sarasara	1 Replies 44 Views	Aug 13, 2021 by ciecieme
All of the gasses are measured in percentages EXCEPT ________. Started by Anajune7	1 Replies 18 Views	Aug 13, 2021 by akemokai
A clogged EGR could cause excessive ________ exhaust emissions Started by c0205847	1 Replies 30 Views	Aug 13, 2021 by momtoalll
Which of these tools is best to check whether the PCM is pulsing an injector? Started by Metfan725	1 Replies 50 Views	Aug 13, 2021 by lcapri7
Which of the following could be reasons for poor engine performance in cold weather? Started by frankwu	1 Replies 39 Views	Aug 13, 2021 by Expo
What should be done if the fuel pressure regulator will NOT hold vacuum? Started by DelorasTo	1 Replies 40 Views	Aug 13, 2021 by ebonylittles
What component pulses the fuel injector on most vehicles? Started by future617RT	1 Replies 37 Views	Aug 13, 2021 by Sarahjh
The vacuum hose from the fuel-pressure regulator was removed from the regulator and gasoline dripped ... Started by jasdeep_brar	1 Replies 51 Views	Aug 13, 2021 by Jane
The fuel pressure drops rapidly when the engine is turned off. Technician A says that one or more ... Started by Evvie72	1 Replies 34 Views	Aug 13, 2021 by gabrielle_lawrence
The following statements are all correct EXCEPT ________. Started by Pineappleeh	1 Replies 26 Views	Aug 13, 2021 by AmberC1996
Technician A says that the fuel system should be diagnosed first in a no-start condition. Technician ... Started by PhilipSeeMore	1 Replies 26 Views	Aug 13, 2021 by mammy1697
Technician A says that if fuel pump pressure is correct, fuel pump volume will be correct as well. ... Started by pepyto	1 Replies 36 Views	Aug 13, 2021 by frankwu0507
Technician A says that all the fuel injectors on an engine should have the same electrical ... Started by danielfitts88	1 Replies 38 Views	Aug 13, 2021 by cloudre37
Technician A always uses a special service tool to pulse fuel injectors. Technician B says that the ... Started by captainjonesify	1 Replies 39 Views	Aug 13, 2021 by Jadwiga9
Port fuel-injection systems generally use what type of injector driver? Started by jilianpiloj	1 Replies 37 Views	Aug 13, 2021 by anyusername12131
On a vehicle with a mass airflow injection system, which of the following is likely to occur with a ... Started by danielfitts88	1 Replies 34 Views	Aug 13, 2021 by smrerig