Small Leak In Cylinder Head

Discussion in 'Fox 5.0 Mustang Tech' started by gnx547, Jun 10, 2013.

  1. I have a pair of Edlebrock Performer cylinder heads and one combustion chamber has a small leak. I poured water in the combustion chamber and all but one holds water. The one that does not hold water is not a big leak, it slightly seeps out from the valve guide. How much attention does this one cylinder head need? Just a new valve guide and lap both valves? The arrow shows where the water is seeping out the guide.

  2. A new guide can be installed and sealed...I'd check both heads while they are off.

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  3. I lapped the valves and it does not leak anymore. I have a lot of dirt and particles on the head, and inside the chambers. Can I use car wash soap and a garden hose to clean the head?
  4. Good degreaser and some scotch brite works good too!

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