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wokka2
20-04-2010, 09:12 AM
Ok Guys here is a tricky one , i have a Johnson 70 2001 we are having some trouble
in that after about 5-7min on the water the hot warning light comes on and it goes into break down Mode ..Now i have had a marine Mechanic on the water with me
to test this . the Motor is not even hot , so we got a Digital thermometer and put on the motor and there is a hot spot right near the sensor which is making is go off
this Mechanic has never seen this before ....! Guys any sugestions as to the Cause

the next step is to pull the head off and have a look .
thanks

Noelm
20-04-2010, 09:32 AM
I kind of guess there will be a partial blockage of the cooling passage right near the sensor, might need to remove it and have a bit of a look inside.

wokka2
21-04-2010, 11:53 AM
thanks Noelm

Noelm
22-04-2010, 08:08 AM
any luck with this problem yet?

wokka2
22-04-2010, 04:16 PM
Had the Marine Mechanic look at it today pulled the head off and found what appears to be 2inch piece of o-ring in where the water Circulates occures , whether this is the Cause i dont know