This may be a bigger can of worms than you anticipated or wanted (I've been down this road lol).....however:
1. Remove spark plugs, fog the cylinders with oil (I am partial to Marvel Mystery oil in cases like this). Give it a day or two, then put a socket on the crank pulley and see if it will...
'Other/Dockside chat', which isn't necessarily non-boat lol. As I tell people on other forums I admin, a few specifics always help. For example, you still haven't said what year/make/model of truck...
It's BS. Only way to alter parameters within a gas engine's tune (for performance, mileage or otherwise) requires actually altering said parameters with a tuner/laptop and being stationary. Diesels are the only ones that seem to have on-the-fly capability and are usually for performance. Save...
My old Crestliner came with a completely seized 165 (250). Like my sig says, never accept a free boat. It was my uncle's, I remembered taking it out a few times in my late teens. I found a Merc 292 to drop in it's place, just needed to fab a taller cover since the 292 is a raised block...
You mean the museum that has been a museum for a number of years now lol......?
Exactly. Active ship? That boat would've gotten M240 or M2 size holes in it long before bouncing off 60,000+ tons.
My uncle had the worst oral hygiene in existence his entire life. It caught up to him in his 50's when all the bacteria on his teeth migrated around his body and first gave him walking pneumonia then settled in his vena cava and caused an aneurysm that was likely months (at most) from bursting...
It isn't bad, I prefer the fora software setup better (been a mod on both). I have noticed most forums setup like this one have generally migrated to the xenforo.
When I was in, our port and weekend safety briefings usually consisted of:
"Don't add to or subtract from the local population and if you end up in jail, establish dominance early"
