"I have a 40hp tohatsu (40
"I have a 40hp tohatsu (40c).It started surging at higher speeds.I replaced fuel filter in tank and on motor,fuel line and connectors,fuel pump,cleaned carburetor,new ignition coil.Did not help.Checked compression top cylinder 126# bottom cylinder 131#.Checked exciter,pulser coil and CDI box.Exciter OHMS 261.9,cranking speed 226 dva,Ideling speed 222 dva,W.O.T. 153dva.Pulser,OHMS 40.2,cranking speed 9 dva,Ideling speed 13 dva,W.O.T. 53 dva.CDI cranking speed 160 dva,Ideling speed 130 dva,W.O.T. 87 dva Any Suggestion Thank You Pokie"
"I have a 40hp tohatsu (40c).It started surging at higher speeds.I replaced fuel filter in tank and on motor,fuel line and connectors,fuel pump,cleaned carburetor,new ignition coil.Did not help.Checked compression top cylinder 126# bottom cylinder 131#.Checked exciter,pulser coil and CDI box.Exciter OHMS 261.9,cranking speed 226 dva,Ideling speed 222 dva,W.O.T. 153dva.Pulser,OHMS 40.2,cranking speed 9 dva,Ideling speed 13 dva,W.O.T. 53 dva.CDI cranking speed 160 dva,Ideling speed 130 dva,W.O.T. 87 dva Any Suggestion Thank You Pokie"