04 4.0 4x4 miss fire

[chris.andros.18]

I have a 04 4.0 4x4 175,000 miles that is running with a miss fire on start up in the morning or after its been sitting trips the engine light and the traction controll light and stability controll light comes on. I've replaced injectors, plugs, and coils and the problem is still there it goes away after about 30 seconds the miss fireing cylinder is 25 psi lower on compression them the one in front of it also problem is on cylinder number five

 

[MFreund]

Check for exhaust gas in your coolant. Sounds like a head gasket to me.

 

[Morphyne]

Check for exhaust gas in your coolant. Sounds like a head gasket to me.

What does that look like?

 

[fdbyrne]

Check for exhaust gas in your coolant. Sounds like a head gasket to me.

I agree. Classic signs unfortunately. I'm sorry.

 

[fdbyrne]

What does that look like?

Just bubbles and maybe not even that. When the engine is cold, take off your radiator cap and start the engine. Watch for bubbles in the radiator. You may have to add some coolant to bring the fluid level up high enough to see the bubbles.

 

[MFreund]

The best way is to go to YouTube and put in exhaust in coolant test. There will be no doubt about the head gasket when you get done.

I have heard some of the local auto part stores will do the test for you if you buy the special fluid from them. I know O'Reilly's here will do it.