Home › Forum › Ask A Member › 57 Johnson 7 1/2 Starts but won’t run › Reply To: 57 Johnson 7 1/2 Starts but won’t run
nothing scary… just pull the carb pull the back plate and behind (trying not to break the gaskets) are the flapper valves feeding the pressure pulses to the side nipple. see parts diagram
keep it simple first… check for air leaks with soapy water
btw did you clean the low speed cct and clean the high speed nozzle looks like the engine is starving
the ls side channel on those carbs has a tiny channle to the top…. blow with carb cleaner & air and check under the top dime size plug to see if the the small idle drip holes are clear.
if your model has a fuel filter remove it for a test run..
to suck fuel out of the carb air must also enter the carb to replace emulsified air/fuel sucked out… make certain any carb hole to balance carb air supply is not blocked.
Pretty certain I have a set in my old parts so if you find yours is defective send me PM.. I can probably send one in a regular mail envelope…free 🙂 after I find it
without paying parcel postage $$$$$ 🙂
Joining AOMCI has priviledges 🙂