Ase diesel Study guides, Class notes & Summaries

ASE Diesel Practice Test Questions with Correct Answers

Which of the following should be done after installing a new copper injector sleeve? A. Heat it B. Dress it C. Ream the seat D. Coat it with a looking compound - Answer-C. Ream the seat (This reaming ensures there will be a good clean area for the injector to seal against) A diesel engine has oil in the radiator. Which of the following would be the cause? A. Cracked piston cooling nozzle B. Cracked oil cooler C. Restricted turbocharger drain line D. Restricted exhaust gas recirculation...

ASE DIESEL ENGINES

When a diesel engine is operated under a load, coolant continually comes out of the radiator overflow and there are bubbles in the radiator. Which of these is the most likely cause? (A) Too much coolant in the cooling system (B) A clogged radiator (C) A stuck-open thermostat (D) Compression leakage into the cooling system - Answer-D A diesel engine has excessive black smoke when started in the morning. Which of these could be the cause? (A) A bad fuel injection nozzle (B) A restricted f...

HEAVY TRUCK ASE Diesel Practice Test 2024 Questions & Correct Answers With 100% Guarantee Pass (20242025) Verified By Experts

The tandem rear axle air suspension ride height rises above normal as the vehicle is unloaded. Which of these could be the cause? (A) A kinked air spring (bag) supply line (B) A leaking height control valve (C) A plugged height control valve exhaust port (D) A leaking pressure protection valve - C The parking brakes fail to apply on a truck with air brakes. Technician A says that low air pressure in the spring brake chamber could be the cause. Technician B says that a ruptured spring brake...

Which of the following should be done after installing a new copper injector sleeve? A. Heat it B. Dress it C. Ream the seat D. Coat it with a looking compound - ANSWER C. Ream the seat (This reaming ensures there will be a good clean area for the injector to seal against)

A diesel engine oil sample shows excessive copper content. Which of the following would be the most likely source? A. Rod bearings B. Exhaust valves C. Intake valves D. Piston rings - A. Rod bearings (Bearings show up in oil samples as copper.) A diesel engine suddenly loses oil pressure at idle. Which of the following could be the cause? A. Stuck open pressure relief valve B. Stuck closed pressure relief valve C. Stuck open pressure differential valve D. Stuck closed pressure differe...

Diesel Tech Suspension and Steering ASE Exam Practice Test Questions with complete solutions

Diesel Tech ASE Practice Test 5 Electrical/Electronic Systems Questions with complete solutions