Been running std ol e10 regular pump gas, with stabilizer for the winter, in my '91 (33 year old) wheel horse tractor with an Onan 20 HP engine since I got it. Only fuel related problem I have ever had was the plastic fuel tank had a stress crack in it and couple of hoses dry rotted. Never...
Tilt / trim system? Mine is powered from the battery or battery switch thru separate fuse.
It works on my Sea Ray, using the transom mounted switch, with battery switch off.
I would remove the quick disconnects and hard connect.
If quick disconnects are never disconnected and exercised, they tend to form leaks in hostile environments.
Here where I am in NC, they sell the ethenol free gas in about 75% of the gas stations and it's usually 91 or 93 (have seen some 89). About $0.50 per gal more than ethenol gas of same octatane rating.
On what should you use? Low performance engine = low octane.
I personally use 91 or 93...
Some tach / hour meters require a pulse (like from the ignition) to get the meter to run. I had to use a pulse generator to get my new tach / hour meter to advance to the 508 hours on the old hour meter. Had it plugged powered for like 21 days to get it right.
Here is 5 of them for eight bucks...
Mercruiser makes a wired version. Have had on / added to all my boats and they work without a hitch.
Never seen a wireless one. I would imagine you could get something like to work fairly easily, but there would be a parasitic power drain on the batteries for that to be operational...
Sounds like the "trailer" switch is bad. It is a separate button, or a 2nd click on the up button, depending on your controls. It bypasses the up/out limit switch to go to full up for trailering.
Some reason, I only considered leaks high on the engine. What about the pan itself? Maybe the gasket got borked when installing. I have seen a couple of V6 pans crack back around the rear main area.
Did the oil pan have any rust on it when installed?
Steel oil pans and damp bilges don't get...
what can leak in the back of a GM V6?
Intake manifold gasket (especially where it contacts corner where block meets heads, meets intake)
Valve cover gaskets
Oil pressure sensor (if it screwed into the block back there)
Distributor missing gasket / o-ring where it enters intake
Rear main seal...
Interesting. I checked the compatability list and it has almost 2800 line items. Looks like it does all Merc and Mercruisers
Do have to buy adapter cables too for $25, but one is a Mercruiser Cable.
Looks like it can ship from US.
If you try it out, let us know how it does.
Legal alternative to flares. No expiration dates on these. (there are others available, but this one is awesome)
https://seatow.com/blog/get-the-uscg-approved-flare-that-never-expires/
Sure looks like a bunch of rust in there, ie: water in the hub.
Hint: use a caliper to measure, as a ruler won't get close to a 100's of an inch. Your ruler measurement is meaningless in this situation.
