Johnson 40hp fuel pump

[Al-53]

Re: Johnson 40hp fuel pump

I say remove the whelch plug and clean in there...never know...and then check the seal on the low idle screw to make sure its not bad and sucking air there...

Have you sprayed any thing like Deep Creep or carb cleaner when idling to see if you have any air leaks..see if smothes out any....this almost seems like its a small overlooked problem...

just trying to help

Al

 

[basstracker1970]

Re: Johnson 40hp fuel pump

Does the mixture screw on the side of carbs control air or fuel. I bought a set of the newer carbs with the black plastic tops and they just run rich at idle. Doest matter where you turn the mixture screws. This motor runs great wot just idle sucks. I have cleaned both sets of carbs inside and out welch plugs removed all clean inside. I dont know what else to do with this motor but replace it.

 

[basstracker1970]

Re: Johnson 40hp fuel pump

Anybody ?????? Please help.......