evinrude 1993 150 intruder shakes at low RPM

[butchkrasniqi]

It takes a lot of cranking to start, after starting shakes a lot at low RPM, till you passed 2000 RPM, Please Help, the engine will stop on water at low RPM, high RPM runs perfect,

 

[SparkieBoat]

Re: evinrude 1993 150 intruder shakes at low RPM

sounds like your idle screws or passages need adjusting/cleaning. Also a new set of champion plugs are always a good idea.

 

[tashasdaddy]

Re: evinrude 1993 150 intruder shakes at low RPM

check spark and compression also.

 

[butchkrasniqi]

Re: evinrude 1993 150 intruder shakes at low RPM

1-90, 2-90, 3-90, 4-70, 5-70, 6-90 compression, the sparks are good,

 

[SparkieBoat]

Re: evinrude 1993 150 intruder shakes at low RPM

idle passages need to be cleaned.

 

[SparkieBoat]

Re: evinrude 1993 150 intruder shakes at low RPM

although the 2 cylinders that are 70 could also cause engine to be out of balance 20 PSI is a little over the recommended tolerance of %15. maybe try a decarb, and replace head seals.