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ENGINE AND EMISSION CONTROL -- Road Test 1-14 ROAD TEST 27. ENGINE PERFORMANCE AND EXHAUST GAS (1) Engine performance Check the engine for proper performance and accel- (2) Exhaust system 1) Check the exhaust system components for gas leaks. 2) Verify that no black smoking is emitted from the end of the exhaust pipe (diesel-powered ve- 28. TRANSMISSION IN ALL RANGES (1) Manual transmission Check the transmission in all forward ranges and in (2) Automatic transmission 1) Make sure shift indicator lines up properly in all ranges. 2) Depress the accelerator completely to check that the manual kickdown is operating correctly. 3) Stop the vehicle on a steep incline. Put the automatic transmission in “P” position 29. BRAKES (1) Service Brake Put the vehicle in gear and apply the brakes while (2) Parking Brake 1) Stop the vehicle on a steep incline. With the service brakes firmly applied, place the 2) Slowly release the service brakes to see if the parking brakes will hold. 30. STEERING CONTROL (1) Check for excessive play or looseness. 31. VIBRATION AND RATTLES (1) Locate squeaks, rattles and unusual vibrations. mission, axle and body. Button |