I have been lapping for hrs. I have a nice light gray dull line all the way around the valve it looks really clean. I put the seal and spring on after cleaning and greasing. When i shine a bright light thru the exhaust hole i can see light leaking thru parts of the valve. It not all the way around just certian parts. Does this mean I not seated and more lapping is needed.
lapping in valves on a 3.4l v6 gm motor?
- Thread starter B W
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