Mercury, 40 hp THUNDERBOLT serial number 5367830

by Dan Diehl
(Elida, ohio)

Runs ruff at times. Is hard to start when cold. It also some times runs good. when running slow it might be ok but when you accelerate it sputters and dies most of the time (sometimes it runs good). It has a console controle that has a neutral throttle when using it it will go to full throttle no problem. It seems to me when it runs bad it is not getting enough gas possibly from an air leak? I have adjusted the idle speed valve, change the plugs, replaced the fuel lines from the tank and checked the tank filter. Could not find an engine fuel filter and dont believe there is one. Unless someone has an idea that I haven't addressed I next plan on rebuilding the carb.

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