...I would simply continue to crank it and let it run for as long as it will, even if it takes multiple tries, it may soon get 'past' the issue and run fine from then on...
don't put any load on it to start with, until you know it's continuing to run under 'idle' for a long while, then add the roof air conditioner to let it 'rev up' and help clean out the system.... let it run for an hour or more.
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the Turners...
two Campers, two Electric cars
former diesel pusher traveler
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