115evinrude 1981 losspower after30mins

[ph1]

i have a 115evinrude after 30mins or more it fouls out a plug or 2. i cleaned the carb checked compreshin 120 120 120 110 . have swaped coils from side to side on differnt have new plugs in it. after it cools down clean plugs or replace them with new it will run 4 about 30mins 0r more then fail the plugs againe.

 

[racerone]

Do a spark intensity check.-----an ignition sytem on those that is in good shape should easily jump a gap of 7/16" on all 4 .---------Are the thermostats installed and in good shape ??-----Fuel pump diaphragm in good shape ?

 

[ph1]

Do a spark intensity check.-----an ignition sytem on those that is in good shape should easily jump a gap of 7/16" on all 4 .---------Are the thermostats installed and in good shape ??-----Fuel pump diaphragm in good shape ?

how do u do a spark intensity check. i look at the fule pump diaphragm it looked good didnt see any rips or tears in it

 

[ph1]

ps there are thermostate in a outboard?

 

[ph1]

the gas mix is 50/1 the tach is about 5700 it has more i dont push it

 

[ph1]

i did know there were state. thank u i will try that .

 

[ph1]

If your going to pull the stats put new in and also you should replace the impeller then you shouldn`t have to worry about it for a while with proper flushing.

should i replace the therma sencers in the heads to