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12-19-2017, 07:01 AM #15000 RPM
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225 promax erratic water pressure gauge?
Noticed last trip of the summer out my water pressure gauge was bouncing around a lot. Between 5&14 psi while cruising on plane. I took a video but can’t figure out how to upload. Didn’t seem to be over heating or anything. Boat ran great. I’m suspecting poppet valve? Sport master mid. Water pumps less than a year old. Needle on gauge bounces back and forth pretty violently. Good sTeady 3-5 psi at idle. Any ideas?
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12-19-2017, 07:43 AM #25000 RPM
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https://youtu.be/VnvAXi_V5H0
You can see the gauge bouncing around for a few seconds in this video
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12-19-2017, 01:36 PM #35000 RPM
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Curious if this is why I also have a kind of blubbery loaded up take off after idling for extended periods of time. Maybe the poppet is stuck and filling the mid up with water
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12-19-2017, 01:54 PM #4
Crap in the water ports and poppet dump will do that.
Running in crappy water a lot I have to mess with that often. I’ve always got crud in my water passages and that’s rhe first sign ofnit.
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12-20-2017, 12:42 PM #55000 RPM
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12-20-2017, 03:41 PM #6
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12-19-2017, 01:56 PM #75000 RPM
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Gotcha. I boat in pretty shallow water good chance there’s some sand or what not in places it shouldn’t be
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12-22-2017, 05:52 AM #8
Simple and quick attempt to clean system, back flush with good pressure. If you have stats open and check them also.
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12-26-2017, 09:53 PM #95000 RPM
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Talked to the guys that rebuilt this motor for the p/o and he said that it’s bormal for thto gauge to jump around at a certain rpm. The poppet doesn’t know what to do so it opens and closes. Kind of makes sense?
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12-26-2017, 11:42 PM #10
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12-27-2017, 01:24 AM #11
Not with the gauge flickering that fast, mine have always been pretty steady and it drops about 2 psi as the t stats cycle. When the poppet opens it drops from 15-18 to 10 and then the pressure builds steady to 30 psi as speed increases.
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tux974 liked this post
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12-27-2017, 05:59 AM #12
I agree with Capt. It should not bounce but move gradually in either direction.
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