Port side engine won't restart after running

[TheReelThing]

Bonefish - Last summer my 1997 Evinrude 150 had the same problem, except it took my mechanic 6 hours to figure it out. You got off cheap, it cost me $600 for a $70 optical sensor. When mine went bad, the boat would start and then rev at 3000 RPM. It eventually came back down, but then I could not start it. It would not catch at all. Glad to hear that your guy found the problem right away.

[zacs]

wtf is an optical sensor?

[TheReelThing]

No idea, but I think that it regulates the fuel. Under the cover if the engine, it says says something like Optical Technology. The mechanic said all he did was replace the optical sensor.

[fishaholic18]

Originally Posted by zacs

wtf is an optical sensor?

Sounds like some type of pick up or cam/crank sensor. Probably looks at engine rotation off the cam or crank.