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Thread: 200 Black Max Low Water Pressure
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10-31-2019, 06:42 PM #61
They metal plate is in water pump we talking bout , but base gasket is power head gasket we talking bout. Gonna need check that I'm afraid
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11-01-2019, 08:40 AM #62Screaming And Flying!
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no not the base gasket for power head but base gasket for lower half of water pump most people dont change that part of the pump for what ever reason but just the impeller and the two gaskets and metal plate if you pull up lower part of pump you will see the base gasket for thats part of the pump that what was backwards sorry for the confusion
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Merc 2.5 liked this post
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11-01-2019, 08:46 AM #63
Oops sry. I misunderstood
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11-06-2019, 03:34 PM #64
Ok guys, we completely redone the water pump new housing new seals new everything. The mid gaskets are all new. We flushed the engine. Dang thing still wont hold more than 5psi. Were lost and about over it lol. Anybody want to buy a black max lol.
Respect no wake zones!!! Evinrude guys need a place to race too.
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11-06-2019, 03:49 PM #65
Only thing that bothers me is how much water is coming out of the top 2 exhaust vents. This is a 200 powerhead, and the mid is a 150. Could the adapter plate be causing problems? Were lost
Respect no wake zones!!! Evinrude guys need a place to race too.
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11-06-2019, 03:52 PM #66
Here is a video
https://youtu.be/7_EcaIRitkARespect no wake zones!!! Evinrude guys need a place to race too.
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11-06-2019, 04:17 PM #67
Think we may have our answer, started looking at gaskets that were on the mid originally. They are 92 and up gaskets, this mid is an 86 according to the serial. The gaskets for the mid to powerhead are completely different in the pics I can find. So we have the wrong mid gasket. Would this cause our problem? Thanks
Respect no wake zones!!! Evinrude guys need a place to race too.
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11-06-2019, 04:35 PM #68
Yes wrong gasket will direct water to wrong spot. 5 psi at idle?
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11-06-2019, 05:17 PM #69
A little less Merc but close.
Respect no wake zones!!! Evinrude guys need a place to race too.
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11-06-2019, 05:19 PM #70
Mine idles round 1lb ,,sumtimes dont read in idle goin out no wake , at wot. U want no more than 15lbs. If ur 3-5lbs idle ur good
My guage could b off little but idle pressure should b under 5lbs
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11-06-2019, 05:21 PM #71
I think that's 1 reason I blew my 1st 2.4. I had way to much pressure and water didnt have time pull heat out of block
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TNRoostertail liked this post
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11-07-2019, 06:47 PM #72
Well we got the new gasket on tonight that matches the mid. Psi is still low around 2-3lbs at idle. I will say this, when we run the throttle up it sucks the hose dry and doesnt give a good psi reading. It didnt do this before so were going to lake test and see what we have. Also ran compression test just to make sure we didnt have a bad head gasket etc.. Motor was from 117- 119 on all 6.
Respect no wake zones!!! Evinrude guys need a place to race too.
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11-08-2019, 07:23 AM #73
Ok rooster. I will say it again haha. That is perfect pressure for idle. What kinda pressure u lookin for at idle? More pressure isnt good. When u drop n lake and put in gear at idle it will drop little more but that's fine to. U have normal pressure
Also when u do get to wot. U dont want more than 15lbsLast edited by Merc 2.5; 11-08-2019 at 07:25 AM.
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11-08-2019, 07:56 AM #74
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11-08-2019, 08:22 AM #75
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