No compression in one of the cylinders

Welcome to 2CarPros.

If there is no compression, either the piston isn't moving, has a hole in the top of it, or a valve is stuck open. The only way to be sure of the cause is to remove the cylinder head.

Here are directions for removal and replacement of the head. The attached pictures correlate with these directions.

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CYLINDER HEAD REPLACEMENT
Cylinder Head Replacement

Tools Required
- J 36660-A Torque Angle Meter

Removal Procedure

picture 1

1. Disconnect negative battery cable.
2. Remove the intake manifold.
3. Remove the power steering pump bolts and set pump aside.

Picture 2

4. Remove the exhaust manifold.
5. Remove the timing chain.
6. Drain the cooling system.
7. Remove the cylinder head bolts in sequence and discard.

Picture 3

8. Remove the cylinder head and gasket.
9. Clean all gasket surfaces.

Installation Procedure

picture 4

1. Install the cylinder head and gasket.
2. Install NEW cylinder head bolts.

Picture 5

Notice: Refer to Fastener Notice in Service Precautions.

3. Tighten the cylinder head bolts in sequence.
Tighten the cylinder head bolts to 30 Nm (22 ft. Lbs.) Plus 155 degrees.

Picture 6

4. Install the NEW front cylinder head bolts.
Tighten the front cylinder head bolts to 35 Nm (26 ft. Lbs.).
5. Install the timing chain.
6. Install the exhaust manifold.
7. Lower the vehicle.
8. Install the intake manifold.

Picture 7

9. Install the power steering pump.
Tighten the power steering pump bolts to 25 Nm (19 ft. Lbs.).
10. Fill the cooling system.
11. Connect the negative battery cable.

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Let me know if this helps.

Joe

Welcome back:

The bad miss is due to the dead cylinder. If I had to guess, I would say you have a valve stuck open or bent. You can rent a camera that can be placed down inside the cylinder to inspect, but sometimes it hard to tell. Also, if you remove the valve cover, see if one of the valves on that cylinder isn't closing.

As far as timing, if it was off to a point where one cylinder had no compression, the others would most likely be the same, so I don't suspect that. However, if timing has been compromised, it is an interference engine.

Let me know if I can help.

Joe

You could also have a blown head gasket, perform a cylinder leak down test to determine where the compression is being lost.
https://mobiloil.com/en/article/car-maintenance/car-maintenance-archive/how-to-do-a-leakdown-test