What causes engine to be loud like that:
after an hour/two of driving is not that loud anymore:
what do you think about it?
no exaust leak, valve adjustment is done.
My Detroit s60 12.7 is very loud first 50-100 miles? After that not so much?
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by CellNet, Jun 28, 2020.
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Turbo boost is 32-35. No boost leaks.
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Is there any loss of power? Or does engine run normally other than being loud? -
Exhaust valves? Wrong timing? I am running out of ideas!
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CellNet Thanks this.
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Last edited: Jun 28, 2020
BoxCarKidd and CellNet Thank this. -
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That sounds like a big difference. Mine always sounds louder when first started. Spark knock especially, like the pistons are slapping, till it warms up. Look for black soot, on the whole exhaust. It could be the muffler(s)
CellNet Thanks this.
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