Thread: B 400 - backfire
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Old 09-09-19, 07:49 PM
Bela Bela is offline
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Join Date: Jun 2018
Posts: 68
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Adjusting correct valve clearance and changing 2 high resistance HT lead plugs made a big difference. No backfire into the carburettors and better performance at all. Tomorrow a longer drive will show the facts.
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