"I thought a bad valve guide would NOT show in a compression or leak down test since it is on the carb/atmospheric side of the valve seat. How would the compression check show a bad guide?" by Mr0077
The guide would have to be bad enough to hammer out the valve seat to be seen. A guide would have to be worse than (just a loose guide) for sure but my thoughts were if it was bad enough to consume the amount of
oil we are talking about it should of hammered out the seat by now. This is also why it would show up on a leak down test if leaking by the valve.