Engine sync lagging

I have had some gauge problems with my boat... I pulled the dash gauge panel off and moved the engine selectors (on the back of the tachs) back and forth several times, and it solved the problem. Your sync gauge looks like it is not reading your RMPs correctly as you advance your throttles. It could be a dirty ground. either at the gauge or the engine pick up...
 
rcknecht said:
I have had some gauge problems with my boat... I pulled the dash gauge panel off and moved the engine selectors (on the back of the tachs) back and forth several times, and it solved the problem. Your sync gauge looks like it is not reading your RMPs correctly as you advance your throttles. It could be a dirty ground. either at the gauge or the engine pick up...
Click to expand...
I think the sync gauge is pretty accurate, because I definitely hear the port motor lagging behind and then catching up as it finally spools up, and then I see the gauge catch up like what is seen in the video. I do need to try that trick with the RPM gauges, as they've become a bit jumpy over the years.
 
So on our boat when doing the sea trial. The captain of the marina that the boat was at was at the helm. He use the synchronizer... At some point when coming back to the marina he said the starboard throttle was not responding.
I had him slow the boat to idle and then neutral.
Inspection of the starboard engine I found that the the fastener " the red plastic part" from cable to linkage. The cable was pulled out from the fastener.
We limped in on the Port motor. I replaced the red plastic part and all was good.

After all that I have not used the synchronizer for fear of doing the same.
However my thought was he just used it wrong and tried to pull or push forward on Starboard at some point and that is why it failed.

Thoughts?
 
I believe there is a clutch adjustment, if the clutch is slipping it takes a few seconds to catch up
 
If you have mechanical engines (CAT's) there are several normal wear parts to the Glendinning Sycronizer that may need to be replaced to get/keep it operational. The system is made up of several flexible drive shafts that are similar to old school speedometer cables off a bike.

The connection between the flywheel and the right angle drive adapter has a single pressed tang that will wear out and also wear out the slot in the right angle drive causing the drive shaft to slip or not engage.

I had to replace these shafts, drive plate and drive adapters and now, it works like a charm. Also buy the alignment tool...worth every penny as as misalignment will wear these parts out fast.

https://www.glendinningprods.com/wp-content/uploads/2017/12/Synchronizer_Drive_Adapter_-_CAT.v2.pdf

Capture.PNG
Capture1.PNG
 
Not sure if that would apply to mine or not, since I don't have the Glendinnings, but I bet there's something similar with the Sturdy's. Thanks for that, I'll check it out. The Clutch adjustment is interesting, and sounds like what is going on.
 
Didn't know Sea ray used anything other than glendinning.
 
It may have been added later by one of the previous owners. Here's a pic of it taken during the survey a few years ago:

DSCF6471.JPG
 
Mine is a sturdy also. Previous owner told me not to turn it on because the last time he did the engine revved out. I never have but really want to.
 
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