I have 93 tourmaster with 300 cummins we just had it serviced everything air filter changed oil and all filters. When you accelerate puffs of black smoke comes it goes away after awhile but it is really bad when you start off what could be the problem.
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Black smoke = not enough air. Could be a crack in an air intake boot or a loose air intake clamp possibly. Is it possible to have someone at the rear of the coach and listen for a whistle while the engine is under power?
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Rudy & Jenny
2014 Thor Four Winds 35SK, Super C
CRV, F-150 and Wrangler Toads
You may have a boost leak. Have someone listen for a hissing sound when you get the smoke.
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Tony & Ruth........... FMCA#F416727
2016 London Aire 4519, Freightliner chassis, Cummins ISX, 2018 Jeep Wrangler Unlimited, Blue Ox Avail with AF1. TST 507 TPMS
No amount of money can buy you an extra second of time.
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