08 50hp 4 stroke on hose

[hl]

I am looking to replace a 70hp force with a 2008 50 hp mercury 4 stroke. The mercury did not show water through the pee hole after running for a minute. I shut it off. The guy said it takes longer for a 4 stroke to warm-up and pee. Not ever owning a 4 stroke I am a little concern. Any advice about a 4 stroke running on a hose.

 

[Texasmark]

Pee availability depends on the plumbing. Pee may come off the thermostat output and if so, you have to wait for the stat to open. On 2 strokers that's 143F engine block water temp. I don't know what stat opening temp is on a 4 stroker but it shouldn't be all that much different. There is more metal in 4 strokers so you have more metal to warm up so yes you could have a delay in a 4 over a 2 if everything is normal.

If plumbed off the exhaust water jacket cover like a lot of engines, or if plumbed directly off the block (follow the hose to see) then you should have water as soon as the water pump has pumped water up to the engine block and filled it enough to get some pressure to squirt. That should be within 30 seconds at idle and normal muff hose outlet pressure.

You could have a dirt dobber's plug in the pee hose.

 

[hl]

Thanks for the reply. I will swap for the mercury, replace the water pump to be on the safe side. I will put it on my pontoon. It will be an improvement over the Force.

 

[Texasmark]

Thanks for the reply. I will swap for the mercury, replace the water pump to be on the safe side. I will put it on my pontoon. It will be an improvement over the Force.

One would think so, at least I would having had 2 Chryslers(Brunswick bought out Chrysler to form Force engines....as I recall) and half a dozen Mercs. Replacing the water pump is always a super idea on a newly purchased used engine. While you're at it, change the lower unit gearbox oil too.