1st time out today

[steplift20]

I was in the back bay buy Sayreville or keyport, not to sure of the exact location I saw another steplift out there with a Yamaha engine Was it any of you guys?

[steplift20]

So I got 10 cocktail blues and two keeper fluke I get back to the Sayreville ramp start my motor to flush it and no stream temp goes up and still no stream so I shut her down, now I have to change the water impeller, what do you guys think? Am I right

[phatdaddy]

You mean change it because it ran hot or change it because it wasn't peeing on a hose. Do you have a temp or water pressure gauge?

[Destroyer]

By all means check/replace the impeller, BUT also look closely at your present impeller for any broken vanes that could be clogging your cooling system. You need to account for EVERY piece if any are missing. Also check your pickup section to make sure no seaweed of other debris is clogging water getting to the impeller.

[steplift20]

I will destroyer Look for any pieces that may have broken off, it was peeing all day but at the marina nothing, it looked like it wanted to but nothing, I'm thinking the thermostats but the impeller hasn't been changed in about three years Maybe longer

[SkunkBoat]

... but the impeller hasn't been changed in about three years Maybe longer
:ski:

That's a part that needs to be changed when its good.

[Striper80]

:ski:

That's a part that needs to be changed when its good.

Maybe 1 hrs worth of work is better than a ruined day.

[step up here]

Something about that hose situation, may be to late know but I would have dunked the trailer with the boat just enough so you could have fired it up again and see if water was flowing like it did before.

[steplift20]

What I'm going to do first is take out the thermostats then run thr motor, if it has a water stream then I know it's the thermostats not the impeller , what do you guys think about that?

[Destroyer]

What I'm going to do first is take out the thermostats then run thr motor, if it has a water stream then I know it's the thermostats not the impeller , what do you guys think about that?

Along with running the engine, since you have the stats out already, now would be a good time to test them. Put them in a pot of water on the stove. When they open take them out and while they are still hot place a long piece of string in the area where they opened. As they cool they will close and capture the string and hold it tight. Now take a candy thermometer and put it in the water (after it's cooled), then put the t stats back in the water, holding them by the strings so they don't touch the bottom, and turn on the heat again. When the water gets hot and they start to open they will fall to the bottom. Read the thermometer at that instant for an accurate reading of when they are opening and compare that to when they are supposed to open.

[steplift20]

Good advice, I will do that, the salt water does a job on those thermostats

[SkunkBoat]

change the impeller....even if its good, you need to remove those bolts every year or 2 before they seize.
I know its painful to throw away a perfectly good impeller but it has to be done.
When you get a $25 oil change at 5k miles you throw away perfectly good oil....


just change the T stats while its apart...what maybe $50 a pair, why waste time boiling them... and they'll have new gaskets.

[Striper80]

change the impeller....even if its good, you need to remove those bolts every year or 2 before they seize.
I know its painful to throw away a perfectly good impeller but it has to be done.
When you get a $25 oil change at 5k miles you throw away perfectly good oil....


just change the T stats while its apart...what maybe $50 a pair, why waste time boiling them... and they'll have new gaskets.

I'd also back flush the engine through the t stats for good measure.
I do my water pump ever other year at least.