1987 evinrude 150, engine tuner spray

[betayv]

Hi guys engine is a 1987 evinrude 150, 155hp i just used the evinrude engine tuner to decarb, follow the intructions but seems that now engine is trending to overheat, will the engine tuner block something that will cause the engine overheat, new water pump kit been installed, engine never try to overheat before the use of the spray.

 

[racerone]

Tuner will not block anything.------What other trouble shooting has been done on this motor ?----------Compression test done ?

 

[wrench 3]

Maybe the cleaner removed some carbon that was plugging up a combustion leak at the head gasket. (Just thinking out loud.)

 

[jimmbo]

When was the "new" water pump installed?

 

[betayv]

Hi guys put the boat im the water and not issues at all run the boat for 4 hours and very good ferformance, I just replaced base gasket, decarb the carburetors, new plugs, compression 105psi every cilynder reading the same.

 

[Bosunsmate]

make sure when using muffs that theres adeuate pressure to lift the water up to the pump and when in a barrell make sure the pump is submerged by at least four inches