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Captiva 1 (2006-2018)

Engine noise when starting (Chevrolet Captiva 1)

Engine noise on start up lasting only a few seconds

STATE	Operation, action
Incorrect oil viscosity	Drain the oil. Fill with oil of the proper viscosity.
Excessive clearance between piston and cylinder bore	Inspect the piston and piston skirt, connecting rod and cylinder bore. Repair or replace all damaged components.

Noise in the upper part of the engine regardless of engine speed

STATE	Operation, action
Low oil pressure	Insufficient quantity or poor quality of oil supplied to the valve mechanism. Perform an oil pressure check. Repair or replace all damaged components.
Incorrect lubrication of the valve tappet	Inspect the valve tappet, valve bridge, valve tappet lifter, oil pump and oil passages in the engine block. Repair or replace all damaged components.
Worn or damaged valve follower pin	Inspect the valve bridge and tappet. Repair or replace all damaged components.
Valve sticking	Carbon deposits on the valve stem or valve seat can cause the valve to stick. Inspect the valves and valve guides. Repair or replace all damaged components.
Worn or defective camshaft lobes	Inspect the camshaft cams. If damaged, replace the camshaft and all valve tappets.
Damage or misalignment of timing gears.	Inspect the timing gears. Replace all damaged components.

Noise at the bottom of the engine regardless of engine speed

STATE	Operation, action
Wear of drive components of units (abnormalities such as severe cracking, unevenness or missing sections on the accessory drive belt and/or misalignment of system components).	Inspect the accessory drive components. Repair or replace all damaged components.
Low oil pressure	Insufficient quantity or poor quality of oil supplied to the crankshaft and connecting rod bearings. Perform an oil pressure check. Repair or replace all damaged components.
Leaking and/or sticking fuel injection nozzle (a stuck fuel injection nozzle can cause noise similar to a damaged piston, connecting rod or connecting rod bearing).	Check the cylinder balance with a diagnostic tool to help identify the cylinder causing the noise. If it is not possible to determine which cylinder is the source of the noise, diagnose the engine for mechanical damage. If it is determined that the fuel injection nozzle is causing the noise, replace the fuel injection nozzle.
Loose and/or damaged crankshaft pulley	Inspect the crankshaft pulley and pulley bolt. Repair or replace all damaged components.
Loose torque converter bolts	Inspect torque converter bolts and flywheel. Repair or replace all damaged components.
Loose fastening and/or damage to the flywheel	Inspect the flywheel and flywheel mounting bolts. Repair or replace all damaged components.
Excessive clearance between piston pin and bore	Inspect the piston, piston pin and connecting rod. Repair or replace all damaged components.
Twisting or bending of the connecting rod	Inspect the connecting rod and connecting rod bearings. Repair or replace all damaged components.
Excessive connecting rod bearing clearance	Inspect the connecting rod bearings, connecting rods, crankshaft and crankshaft journals. Repair or replace all damaged components.
Excessive main bearing clearance	Inspect the main bearings and crankshaft journals. Repair or replace all damaged components.

Engine noise under load

Cause	Elimination
Low oil pressure	Insufficient quantity or poor quality of oil supplied to components. Perform an oil pressure check. Repair or replace all damaged components.
Loose torque converter bolts	Inspect torque converter bolts and flywheel. Repair or replace all damaged components.
Loose fastening and/or damage to the flywheel	Inspect the flywheel and flywheel mounting bolts. Repair or replace all damaged components.
Excessive clearance between piston and cylinder bore	Inspect piston rings for low ring tension, broken or worn rings, inspect cylinder bore. Repair or replace all damaged components.
Excessive crankshaft thrust bearing clearance	Inspect the crankshaft axial clearance and crankshaft thrust bearings. Repair or replace all damaged components.
Excessive main bearing clearance	Inspect the main bearings and crankshaft journals. Repair or replace all damaged components.

[The article was borrowed from the website: «ChevyMan.ru»]

The article was checked: Vladimir Romannikov

This article is available at russian, bulgarian, belarusian, ukrainian, serbian, croatian, romanian, polish, slovak, hungarian

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Captiva 1: Troubleshooting

Next articles

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Captiva 1 (2006-2018)

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