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Added precaution for proper bleeding on F7s

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I want to add that in the bleeding proceedure I posted the other night, starting and
shutting off of the engine is critical and I fear many dealers will
skip those steps.
Please make sure you do this (and your dealer does also). Blacksaber7, please take note

When the bubble gets caught in the rear exchanger there
is also one caught in each side hose that lead to the running board
exchangers. These are the high points. The problem is that the air
gets pushed through the system so fast that it can go straight to the
pump and cavitate. Thats why they are seeing the seizures. If the
pump cavitates from an air bubble it wont pump again until the engine
is shut off and allowed to bleed the air through the small line at
the top of the head.
It was a rather complicated problem.
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