Mont-Blanc
Member
- Joined
- May 15, 2022
- Messages
- 13
I am crossing lake Ontario and my boat sync started to randomly go toward rhe port side but the rpm's don't change. The sound does !
Any ideas ?
Any ideas ?
Last edited:
I am crossing lake Ontario and my boat sync started to randomly go toward rhe port side but the rpm's don't change. The sound does !
Any ideas ?
View attachment 156827
It is just a gauge to help you manually sync them. I can't disengage, there is no switch.Can you disengage the synchronization and adjust RPM by ear?
It is a diesel boat.Are you gas or diesel? Sorry, forgot this is a Cat boat.
One way of diagnosing this would be to get a photo tack from Amazon. This would allow you to determine if your tachometers are reading accurately.
The odd part here is that you feel the sound changed but the RPM did not. I am at a loss as to why the RPMs would change on their own. Now if you are a gas engine you could be suffering from misfires, only I would think that would show up with an RPM flutter. Not relevant to diesel engines.
Do you actually have an engine synchronizer or is just a gauge to help you manually sync them?
If there is an actual engine synchronizer than we should be looking at that. With synchronizers, if the unit has an issue reading the slave engine it usually responds by speeding up the slave engine. However, this too usually shows up in the tachometer.
Thank you for that suggestion, I will inspect today. But yesterday it took an hour before it starts doing it, a worn drive pin would do that constantly ?It sounds to me like a worn drive pin on the port engine. Very easy to replace.
Thank you for that suggestion, I will inspect today. But yesterday it took an hour before it starts doing it, a worn drive pin would do that constantly !It sounds to me like a worn drive pin on the port engine. Very easy to replace.
I did not youch the throttle, that is the problem, it does it by itself. There is no master slave sync here, it is just a gauge to help me manually sync them.In the OP's video, the variation in RPMs in the starboard engine is visible and audible. Did the operator touch the throttle during this episode?
In addition to that question, more info is needed here. Which engine is the "master," and which the "slave"? What kind of synch device is installed? Is it part of an electronic control system, such as MMCs? If the latter, a voltage hiccup could explain almost anything.
Here is a new video where I opened the hatch so you can ear the sound better.I am crossing lake Ontario and my boat sync started to randomly go toward rhe port side but the rpm's don't change. The sound does !
Any ideas ?
View attachment 156827