I had a similar issue after an all silicone hose upgrade. Plus one issue not with pitting but with silicone hoses. First was a leak at the end of the...
The OE caps can be tested. Rent or buy a tester with the correct (Size A) rad cap adapter. The adapter you used was for a different cap design if it...
That's the very useful diagram out of the factory book. Good reference.
New users: This diagram is "upside down" since the flywheel/clutch is at the...