Thick white smoke from tail pipe when start car

CHARAN

MEMBER
2004 HYUNDAI ELANTRA
4 CYL
2WD
AUTOMATIC
94,300 MILES

This happens when I start my car first time in the day. It smokes a lot for a minute but then becomes normal. I believe this could be head gasket. Is this something I can repair myself? If so wondering if you can provide any link for help.
Many thanks.

1 Reply

ASEMASTER6371

MECHANIC
52,797 POSTS

Good afternoon,

This is a major job as the cylinder head must be removed, and sent out to be sure there is no cracks

https://www.2carpros.com/articles/white-smoke-or-steam-coming-from-the-exhaust-pipe

https://www.2carpros.com/articles/how-a-cylinder-head-works

Then you need to find out why it failed. The head gasket is a result of overheating, not the cause of overheating.

https://www.2carpros.com/articles/engine-overheating-or-running-hot

Attached is the procedure for you for the repair.

Roy

1. Remove the heat shield (A).
2. Disconnect the AFS connector.
3. Disconnect the breather hose from air cleaner hose.
4. Remove the intake air hose and air cleaner assembly

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5. Remove the upper radiator hose (A) and lower radiator hose (B).

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6. Remove the heater hoses (A).
7. Remove the engine wire harness connectors and wire harness clamps from the cylinder head and the intake manifold.
1. Oil control Valve (OCV) connector (A).
2. Oil temperature sensor connector (B).
3. Engine Coolant Temperature (ECT) sensor connector (C).

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4. Ignition coil connector (D).
5. Throttle Position Sensor (TPS) connector (A).

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6. Idle Speed Actuator (ISA) connector (B).
7. Camshaft Position Sensor (CMP) connector (A).
8. Four fuel injector connectors (B).
9. Knock sensor connector (C).

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10. Disconnect ground cable (D) from the intake manifold.

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11. Front heated oxygen sensor connector (A).

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12. Purge Control Solenoid Valve (PCSV) connector (A).

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8. Remove the fuel inlet hose (A) from delivery pipe.

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9. Remove the PCSV hose (A).

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10. Remove the brake booster vacuum hose (A).
11. Remove the accelerator cable by loosening the lock nut, then slip the cable end out of the throttle linkage.
12. Remove the power steering pump.

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13. Remove the power steering pump bracket bolts (A).
14. Remove the spark plug cable.
15. Remove the PCV hose.
16. Remove the cylinder head cover.
17. Remove the timing belt.
18. Remove the exhaust manifold.
19. Remove the intake manifold.
20. Remove the camshaft sprocket.

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21. Remove the timing chain auto tensioner (A).

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22. Remove the camshaft bearing caps (A) and camshafts (B).

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23. Remove the OCV (oil control valve) (A).

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24. Remove the OCV (oil control valve) filter (A).

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25. Remove the cylinder head bolts, then remove the cylinder head.
1. Using 8 mm and 10 mm hexagon wrench, uniformly loosen and remove the 10 cylinder head bolts, in several passes, in the sequence shown. Remove the 10 cylinder head bolts and plate washers.

CAUTION: Head warpage or cracking could result from removing bolts in an incorrect order.

2. Lift the cylinder head from the dowels on the cylinder block and replace the cylinder head on wooden blocks on a bench.

CAUTION: Be careful not to damage the contact surfaces of the cylinder head and cylinder block.

Images (Click to make bigger)