High soot output. on cold start up in ambient temperatures of -4°C (25°F) or less, mack engines may...
Mack technical service bulletin FSB 284-057 for 2015-2016 Mack Gu, 2015-2016 Mack Cxu and 2015-2016 Mack Mru and others.
- Bulletin number
- FSB 284-057
- Component
- Engine
- Summary
- High soot output. On cold start up in ambient temperatures of -4°c (25°f) or less, mack engines may experience rough running at lower than normal base idle speed. Under these conditions, excessive soot is being produced by the engine and may result in dpf clogging at a very rapid rate.
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