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Thread Title:

12v92 marine engine rpm loss under load


Created On Tuesday December 05, 2023 03:02 Diesel Talk
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catman34
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Posts: 1
Joined: Dec 2023

Note Tuesday December 05, 2023 03:02 View thread in raw text format
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Hello dear friends, the 12v92 Detroit series marine main machine has the following problem.
It reaches full rpm in idle without any problem. Whenever we go on a cruise, when the transmission engages, the rpm stays at 800 rpm.
Nonsense questions come to my mind;
1. If there is a throttle problem, why does it reach full rpm at idle?
2. If there is a mechanical problem, does the idle speed of 600 rpm affect only 200 rpm?
I would be grateful if you could shed some light on this subject.

-------------------------
 I have been a caterpillar marine electronics engineer for over 15 years.
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