Heavy blue smoke usually appears under acceleration?

  • 2003 DODGE RAM
  • 4.7L
  • V8
  • 2WD
  • 128,000 MILES
Hoping it isn’t the rings, is there a VVT and if so, where’s it located sir? Hard fix? Any other possible issues that come to mind that you can recommend for me to look at? PCV seems to be working fine sir, I’m really in a bad place financially, home just burned down, my Range Rover transmission went out, on and on I could go! Any help would be greatly appreciated sir, thank you!
Do you
have the same problem?
Thursday, May 25th, 2023 AT 2:35 PM

1 Reply


If this only happens under acceleration, chances are it is being caused by either failing valve seals or PCV.

Blue smoke is often associated with burning oil. If the engine is burning oil, it can create blue smoke in the exhaust. Potential causes of oil consumption include worn piston rings, worn valve seals, or a damaged cylinder head gasket. These issues can allow oil to enter the combustion chamber and get burned along with the fuel.

The valve stem seals prevent oil from entering the combustion chamber when the valves are closed. If the seals are worn or damaged, oil can leak into the combustion chamber and cause blue smoke during acceleration.

The PCV system helps control crankcase pressure and removes gases and oil vapors from the engine. If the PCV system is clogged or malfunctioning, excessive oil vapor can be drawn into the intake manifold and contribute to blue smoke.

What you need to do is remove the valve covers and inspect the seals. Once the valve covers are removed, visually inspect the valve stems and the area where the valve stem meets the valve guide. Look for signs of oil accumulation or residue on the valve stems or around the valve guide area. If you notice excessive oil buildup or visible damage to the seals, it may indicate worn or damaged valve seals.

I attached the directions below showing how to remove and reinstall the valve covers. Note that it is broken down for each side.

Let me know what you find or if you have questions.

Take care,


See pics below.
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Thursday, May 25th, 2023 AT 9:41 PM

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