Hyundai Accent: Engine Mechanical System / Troubleshooting
Hyundai Accent (HC) (2017 - 2022) Service Manual / Engine Mechanical System / Troubleshooting
| Symptom | Suspect area | Remedy | ||||||||
| Engine misfire with abnormal internal lower engine noises. | Loose or improperly installed drive plate. | Repair or replace the drive plate as required. | ||||||||
| Worn piston rings. (Oil consumption may or may not cause the engine to misfire.) | Inspect the cylinder for a loss of compression . Repair or replace as required. | |||||||||
| Worn crankshaft thrust bearings. | Replace the crankshaft and bearings as required. | |||||||||
| Engine misfire with abnormal valve train noise. | Stuck valves. (Carbon buildup on the valve stem can cause the valve not to close properly.) | Repair or replace as required. | ||||||||
| Excessive worn or mis-aligned timing chain. | Replace the timing chain and sprocket as required. | |||||||||
| Worn camshaft lobes. | Replace the camshaft and HLA. | |||||||||
| Engine misfire with coolant consumption. |
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| Engine misfire with excessive oil consumption. | Worn valves, valve guides and/or valve stem oil seals. | Repair or replace as required. | ||||||||
| Worn piston rings. (Oil consumption may or may not cause the engine to misfire) | Inspection the cylinder for a loss of compression. Repair or replace as required. | |||||||||
| Engine noise on start-up, but only lasting a few seconds. | Incorrect oil viscosity. | Drain the oil. Install the correct viscosity oil. | ||||||||
| Worn crankshaft thrust bearing. | Inspect the thrust bearing and crankshaft. Repair or replace as required. | |||||||||
| Upper engine noise, regardless of engine speed. | Low oil pressure. | Repair or replace as required. | ||||||||
| Broken valve spring. | Replace the valve spring. | |||||||||
| Worn or dirty valve lifters. | Replace the valve lifters. | |||||||||
| Stretched or broken timing chain and/or damaged sprocket teeth. | Replace the timing chain and sprockets. | |||||||||
| Worn timing chain tensioner, if applicable. | Replace the timing chain tensioner as required. | |||||||||
| Worn camshaft lobes. | Inspect the camshaft lobes. Replace the camshaft and valve lifters as required. | |||||||||
| Worn valve guides or valve stems. | Inspect the valves and valve guides, then repair as required. | |||||||||
| Stuck valves. (Carbon on the valve stem or valve seat may cause the valve to stay open.) | Inspect the valves and valve guides, then repair as required. | |||||||||
| Lower engine noise, regardless of engine speed. | Low oil pressure. | Repair or replace damaged components as required. | ||||||||
| Loose or damaged drive plate. | Repair or replace the drive plate. | |||||||||
| Damaged oil pan, contacting the oil pump screen. | Inspect the oil pan. Inspect the oil pump screen. Repair or replace as required. | |||||||||
| Oil pump screen loose, damaged or restricted. | Inspect the oil pump screen. Repair or replace as required. | |||||||||
| Excessive piston-to-cylinder bore clearance. | Inspect the piston and cylinder bore. Repair as required. | |||||||||
| Excessive piston pin-to-bore clearance. | Inspect the piston, piston pin and the connecting rod. Repair or replace as required. | |||||||||
| Excessive connecting rod bearing clearance. | Inspect the following components and repair as required.
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| Excessive crankshaft bearing clearance. | Inspect the following components and repair as required.
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| Incorrect piston, piston pin and connecting rod installation. | Verify the piston pins and connecting rods are installed correctly. Repair as required. | |||||||||
| Engine noise under load. | Low oil pressure. | Repair or replace as required. | ||||||||
| Excessive connecting rod bearing clearance. | Inspect the following components and repair as required.
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| Excessive crankshaft bearing clearance. | Inspect the following components and repair as required.
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| Engine will not crank. (crankshaft will not rotate) | Hydraulically locked cylinder.
| Remove spark plugs and check for fluid. Inspect for broken head gasket. Inspect for cracked engine block or cylinder head. Inspect for a sticking fuel injector and/or leaking fuel regulator. | ||||||||
| Broken timing chain and/or timing chain gears. | Inspect timing chain and gears. Repair as required. | |||||||||
Foreign material in cylinder.
| Inspect cylinder for damaged components and/or foreign materials. Repair or replace as required. | |||||||||
| Seized crankshaft or connecting rod bearings. | Inspect crankshaft and connecting rod bearing. Repair or replace as required. | |||||||||
| Bent or broken connecting rod. | Inspect connecting rods. Repair or replace as required. | |||||||||
| Broken crankshaft. | Inspect crankshaft. Repair or replace as required. |
Other information:
Hyundai Accent (HC) (2017 - 2022) Service Manual: Piston and Connecting Rod
- Disassembly • Use fender covers to avoid damaging painted surfaces. • To avoid damage, unplug the wiring connectors carefully while holding the connector portion. • Mark all wiring connector and hoses to avoid misconnection. • To release the fuel system pressure before removing the engine assembly, start the engine without fuel pump relay.Hyundai Accent (HC) (2017 - 2022) Service Manual: Rear Wheel Speed Sensor
- Components [Drum Type] 1. Front wheel speed sensor2. Front wheel speed sensor cable [Disc Type] 1. Front wheel speed sensor2. Front wheel speed sensor cable - Removal [Disc Type] 1.Loosen the wheel nuts slightly.Raise the vehicle, and make sure it is securely supported. 2.Remove the rear wheel and tire (A) from front hub.Tightening torque :107.
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