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Old 08-18-2018, 02:10 PM
rossi_the_heeler rossi_the_heeler is offline
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Join Date: Aug 2017
Boat: 1994 Prostar 205
Location: midwest
Posts: 30
A Cool way to test your boat in the driveway

I've been having issues that only show up when the motor is fully hot, and I can't replicate it in the driveway which leads to MUCH stress on the water.
So I engineered up a little solution and IT WORKED!
I used a 1/4 hp submersible pump -I think it's up to 25 gpm. (I got it at Menards for 50 bucks or less). Then stick it in the kiddie pool, slide the pool up underneath the exhaust flappers and fill it with 6" or so of water. The hose on the pump goes to the Fake-A-Lake.
So I just plug the pump in, and run the boat. It recirculates its own water and totally simulated my hot-stall issues I was having.
Careful, the water in the kiddie pool gets pretty hot, but my thermostat was right at 160 running it for quite a while, never any higher.
I'm not sure how good this is for the raw water impeller, but I think that may be the only downfall I could see.
Maybe this will help some other poor soul, as everyone here has been so helpful to me.

Video is attached in case it doesn't make sense.
Attached Files
File Type: mov IMG_5631[1].MOV (7.93 MB, 223 views)
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  #2  
Old 08-18-2018, 02:26 PM
fstaslp fstaslp is online now
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Boat: 1999 Mastercraft Maristar 230VRS
Location: Indianapolis, IN
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This is brilliant!
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Old 08-18-2018, 11:17 PM
trunderw trunderw is offline
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Boat: 2008 X-14 MCX w/Powerslot
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So did you find the problem that happens only when hot?
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Old 08-19-2018, 12:26 AM
88 PS190 88 PS190 is offline
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Boat: 1988 MC Prostar 190, 351 Ford
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Thats basically how we used to winterize at a marina I worked for. Run boat in lake till warm, back it to a tub (ours was on wheels) tub full of antifreeze w pump . Fake a lake or lower unit cuff, pump on run boat. Add antifreeze to tub as needed.

One fully pink youd fog it, drain it and do oil change.
Thats how theyd make money.
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  #5  
Old 08-19-2018, 08:45 AM
rossi_the_heeler rossi_the_heeler is offline
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Join Date: Aug 2017
Boat: 1994 Prostar 205
Location: midwest
Posts: 30
Trunder-
I did find the root cause of the issue, it's in a post that's a few down from this one. Basically the ECT is spitting out the correct engine temperature, but the ECM doesn't like it (too hot maybe?). Temp gauge was reading 160 and the ECT was 162 (cross-referencing the Ohms).
Engine was hot-stalled, would only crank. (Had fuel and spark!)
I pulled the wires off the ECT and it fired right up! So I'm not sure why but i now know at least WHAT was causing the engine not to fire.
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