Cleaning carbon crud from pistons / piston ring grooves - IDI Engine - VWDiesel.net The IDI, TDI, and mTDI source.

• Cleaning carbon crud from pistons / piston ring grooves by captainpartytime on 28 Jul, 2008 19:34
• What is the best way to clean the carbon crud off of my pistons and piston ring grooves?
• #1 by Vincent Waldon on 28 Jul, 2008 21:24
• A carbide piston ring groove cleaner  with the right size cutter is the safe way to do the ring grooves.... it's a sealing surface and so needs to be cleaned very accurately.
  
  For the face of the piston... I actually cheat and use a wire brush... but I'm very careful to get nowhere near the edge where I might scrape a groove in the side.
• #2 by vanagonturbo on 29 Jul, 2008 19:45
• I have used the old rings to clean the ring grooves. You will need to file/grind and edge to be able to pick at it to get the crud off. If you did it right, you will have numerous cuts on your thumb
• #3 by fastvicar on 30 Jul, 2008 08:04
• I must have done it very right.