RodnReel.com Sportsman's Forum - What the heck is this on Johnson 150??

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What the heck is this on Johnson 150??

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Steven
Junior Member

103 Posts

Posted - 07/21/2010 : 3:14:43 PM

Hey all, I have a 2000 Johnson 150 and today I had the cowling off in the water checking for a fuel leak and I found a port on the bottom side of the starboard back part of the block, under the spark plugs. It shoots water out into the cowling and the faster I rev the engine, the more water comes out. I took the boat to the mechanic that worked on it before and he thought it may be a port to hook up a water gauge, that may have used to have a cap on it but wasn't sure. Recommended to plug it. Any ideas? Is it part of the cooling system? I have pics, but don't know how to post them here. How do u do that too?

Thanks,
Steven

Steven
Junior Member

103 Posts

Posted - 07/21/2010 : 3:30:39 PM

I found a diagram in a manual I have that says it's a water restrictor. Can't find anything else about it--what to do w/it? Any ideas?

T-heart
Advanced Member

USA
686 Posts

Posted - 07/21/2010 : 4:21:11 PM

send the pics to me i have a 1995 johnson 150 and i can compare to mine

Steven
Junior Member

103 Posts

Posted - 07/22/2010 : 2:24:23 PM

ok, will try to do tonight

Steven
Junior Member

103 Posts

Posted - 07/23/2010 : 5:56:03 PM

Also posted a pic here: http://www.alrodngun.com/POTB/PicView.asp?PicID=129785

Talked w/Johnson today and the guy feels it's the rectifier regulator venthose and should be attached to the rect. reg at top of block under shroud--I'll look tonight when I get home from work..

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