Mornings, and after driving many miles the previous day, my 95 850 (133 K) starts very roughly (sometimes not at all) at 8500 feet where I now live. At 6200 feet, no problem. Twice I have had to tow to Volvo. Their diagnosis: manifold is flooded, plugs fouled. Cleaned all, starts fine for them, but back at 8500 feet, it's like starting on 1 cylinder. Eventually it chugs away till all's fine, and continues running quite well. The car does not burn oil.
Owned the car since new, never had any problems till I moved to high altitude.
Any clues?
Thank you in advance
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