water gauge question Johnson 150

[Mac3]

Hello all,
last trip I ran over some weed and the water gauge showed reduced flow afterwards and then the engine warning light came on after about 20 minutes. When I flushed it at the ramp the gauge was normal and no alarm although I understand this is not an accurate way to check a flow problem. I have removed the impellor for inspection all ok. Q1: Is it ok the flush from the top with the lower unit removed? Q2: I'm thinking the blockage is right where the gauge is for reasons I won't bore you with, can someone direct me to where that is located and would it be ok to squirt the hose down there. I only have a Seloc manual which is not helping and before you say get a oem manual I am awaiting one which is on order at the moment. I have a 97 Johnson 150 ficht Oceanrunner.
thanks
David
ps this is the best website on the internet.

 

[Chris1956]

Re: water gauge question Johnson 150

Dave, I have a '98 Johnny 150 carb model. The owners manual allows flushing from the top with the LU on, so I cannot imagine removing it would do any harm while flushing it. I would pull the thermostats and flush the daylights out of it from the top and bottom.

 

[Mac3]

Re: water gauge question Johnson 150

Sorry about the slow response but thanks Chris. I've been working on it during the week- it's dark winter down here you know- I'll give it a belt tomorrow and reassemble it and let you know how I go.
David