Hyundai Tucson: Troubleshooting
Symptom- Engine misfire with abnormal internal lower engine noises.
Suspect area/ Remedy
- Loose or improperly installed drive plate(or fly wheel)./ Repair or replace the drive plate(or fly wheel) 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.
Symptom- Engine misfire with abnormal valve train noise.
Suspect area/ Remedy
- 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.
Symptom- Engine misfire with coolant consumption.
Suspect area/ Remedy
- Engine misfire with coolant consumption./ Inspect the cylinder head and engine block for damage to the coolant passages and/or a faulty head gasket.
- Coolant consumption may or may not cause the engine to overheat./ Repair or replace as required.
Symptom- Engine misfire with excessive oil consumption.
Suspect area/ Remedy
- 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.
Symptom- Engine noise on start-up, but only lasting a few seconds.
Suspect area/ Remedy
- 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.
Symptom- Upper engine noise, regardless of engine speed.
Suspect area/ Remedy
- 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.
Symptom- Lower engine noise, regardless of engine speed.
Suspect area/ Remedy
- 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.
- The connecting rod bearings.
- The connecting rods.
- The crankshaft.
- The crankshaft journal.
- Excessive crankshaft bearing clearance./ Inspect the following components and repair as required.
- The crankshaft bearings.
- The crankshaft journals.
- Incorrect piston, piston pin and connecting rod installation./ Verify the piston pins and connecting rods are installed correctly. Repair as required
Symptom- Engine noise under load.
Suspect area/ Remedy
- Low oil pressure./ Repair or replace as required.
- Excessive connecting rod bearing clearance./ Inspect the following components and repair as required.
- The connecting rod bearings.
- The connecting rods.
- The crankshaft.
- Excessive crankshaft bearing clearance./ Inspect the following components and repair as required.
- The crankshaft bearings.
- The crankshaft journals.
- The cylinder block crankshaft bearing bore.
Symptom- Engine will not crank. (crankshaft will not rotate)
Suspect area/ Remedy
- Hydraulically locked cylinder.
- Coolant/antifreeze in cylinder.
- Oil in cylinder.
- Fuel in 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.
- Broken valve.
- Piston material.
- Foreign material./ 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.
READ NEXT:
Specifications
Tightening Torques
Special Service Tools
Tool (Number and
name)/ Illustration/ Use
Valve spring
compressor
(09222-3K000)
Valve spring
compressor adapter
(09222-3K100)/
/ Removal and i
SEE MORE:
In-car sensor
Components Location
In-car sensor
Replacement
Disconnect the negative (-) battery terminal.
Remove the crash pad center panel.
(Refer to Body (Interior and Exterior) - "Crash Pad Center Panel")
Using a screwdriver or re
Front Brake Pad
Loosen the wheel nuts slightly.
Raise the vehicle, and make sure it is securely supported.
Remove the front wheel and tire (A) from front hub
WARNING
Be careful not to damage the hub bolts when removing the front wheel
and tire (A).
Information
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- Hyundai Tucson - Fourth generation (NX4) - (2020-2023) - Owner's Manual
- Hyundai Tucson - Fourth generation (NX4) - (2020-2023) - Workshop Manual