Department of automobile engineering
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- Date: Signature of faculty member EXPERIMENT: - 8 DATE:- AIM
- EQUIPMENT TOOLS
- DESCRIPTION
- Figure 23 SMOKE MEASURING METER
- Figure 24 TUNE UP KIT
- Figure 25 TUNE UP KIT EVALUATION TABLE
- Date: Signature of faculty member EXPERIMENT: - 9 DATE:- AIM
- DESCRIPTION: COOLING SYSTEM SERVICE
Figure 22 DYNAMOMETER EVALUATION TABLE:
Date: Signature of faculty member EXPERIMENT: - 8 DATE:- AIM: Engine Tune up and exhaust gas analysis OBJECTIVES: After completion of this experiment student will be able to know. To develop an attitude of inquiry to acquire handling various testing acquirement. Acknowledge of how to do a recommend tune up procedure. EQUIPMENT TOOLS: Volt meter A-meter Compression tester Hydrometer Timing Light Tachometer Dwell tester Filler gauge Hand tools DESCRIPTION: The steps in a typical tune up procedure are given below. steps do not apply to all vehicle or to all engines. Test & Service the battery & starting motor. if the battery is law or the customer complain that the battery keeps running down, check the charging system. If the battery is defective install a new battery. Inspect the drive belt replace any that are in poor condition. Replace both belts in a two V-belt set. Tighten the belts to the specific tension using a belt- tension gauge. If the engine is cold, operate it for of least 20 minutes at 1500 rpm or until engine reaches normal operating temperature. Connect the engine analyzer or oscilloscope and per-form an electrical diagnosis. Check for any abnormal ignition-system condition and the cylinder in which it occurs. Perform a compression test. If necessary, perform a cylinder leakage test & engine vacuum tests. These provide additional information on engine condition. If mechanical problems are found. Inspect the ignition system. look for the cause any abnormal condition seen with the engine analyzer or oscilloscope. Check the condition of the distributer cap, rotor & primary & secondary wiring. contact points ignition system, clean & adjust. Check the manifold heat control valve, if used. It should move freely. lubricant it with heat control-valve lubricant. Free or replace the valve if necessary. Test the fuel pump with a fuel pump tester; Replace the fuel filter. Check the fuel tank cap. Fuel line & connections for leakage damage. Clean or replace the air-cleaner filters. If the engine has thermostatic air cleaner, check the operation of the vacuum motor. Check the action of the throttle valve. Push the accelerator pedal to the floor to be sure the throttle valves open fully. Check carburettor chock & test idle system if used. Clean external linkage & check for the binding. Inspect oil engine vacuum fitting hose connections replace any brittle or cracked hoses. Clean the engine oil filter cap inspects the condition of its gasket or seal. Check the cooling system if necessary till if to the proper level with the specified coolant. Check that the coolant contains the proper amount antifreeze for leakage protection drain & install fresh coolant, If require by the vehicle maintenance schedule. Inspect all hoses, connections radiator water pump and fan clutch or electrical fan pressure, Check the cooling system a radiator cap squeeze the hoses to check their condition, replace any defective hoses or other parts. Inspect the PCV system check & replace the PCV valve if necessary clean or replace the PCV system air filter is required inspect the PCV hoses connections replace any cracked or brittle hoses, test the system for crank case vacuum. If the engine has an air –injection pump replace the pump inlet-air filter. If used inspect the system hoses & connection replace any brittle or cracked hoses. If the evaporative control system uses on air filter in the charcoal canister replace, replace the filter. Check the transmission controlled sports system if the vehicle is equipment. Inspect the EGR valve clean or replace as repair. Inspect the clean the EGR discharge applying vacuum to the valve with the engine should run rough with vacuum applied then smooth out with no vacuum. Adjust the engine valves if necessary so manufactures recommend performing this first in the tune up procedure. 
Figure 23 SMOKE MEASURING METER Adjust the engine idle speed check the amount of the HCD coin the exhaust gas the HO & CO both before after tuned. Shows how much the required adjust the idle mixture (when possible) follow the procedure outlined on the VECI label in the engine compartment. If the engine has a turbo charger check the waste gate operation follows the procedure in the vehicle service manual. Tighten the intake-manifold & exhaust-manifold bolts to the specified torque in the proper sequence. 
Figure 24 TUNE UP KIT Check the maintains sticker or the lubrication schedule to replace in the proper sequence chassis lubrication recommend the service due to the vehicle owner. While the car is on the left check the exhaust system for leaks. These could admit deadly carbon monoxide (co) into the passenger compartment. Also look for loose bolts. Rust sports and heat, shield and other under car damage. Road test the car on a dynamometer or on the road check for drivability power & idining abnormal condition now may require additional checking and service to other parts or system always not any and corrected abnormal condition on the repair order before retaining the car to the customer if possible explain the notes on the repair order to the customer condition that affects emissions fuel economy reliability & safety may need immediate attention. 
Figure 25 TUNE UP KIT EVALUATION TABLE:
Date: Signature of faculty member EXPERIMENT: - 9 DATE:- AIM: Servicing of cooling system OBJECTIVES: - After completion of this experiment student will be able to know. Servicing of cooling system. Flushing and reverse flushing process Method for finding coolant leakage DESCRIPTION: COOLING SYSTEM SERVICE:- 
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