carb problem early 80s evinrude 115

[RippinLipInMiami]

rebuilt the carbs(cleaned installed new floats set to level with the carb body,new seats and needle and new gaskets) on my evinrude 115 and put them back on. i'm having a problem with spit back through one carb throat on only one cylinder. i removed the carbs and removed the intake manifold to check the reads and the are all there and look to be in good condition. the only thing i noticed is one reed valve is just slightly lifted off the reed block just by a hair. i would think that crankcase pressure would force it shut. should the reeds be against the reed blocks tight and flush?

what would cause spitting through the carbs?

[jeff dunn]

Check and see if both carb butterflys are closed, if ones open could cause a problem, Jeff

[RippinLipInMiami]

will check when i get home.

[RippinLipInMiami]

both butterflies are closed but the jets are all screwed up. i took the jets out and i have 69 high speed 30 mids and 28 idle jets on 1 3/16 carbs.

[Dave S]

If the carbs have plastic float bowls and have been over tightend they warp and suck air.... block sand em....

[EMDSAPMGR]

The early 80's 140 hp crossflow carbs generally came with .067 main jets, but they were large throat carbs: either 1 5/16" carb or 1 3/8". Those small throat 1 3/16" carbs probably came with .060 main jets. Likely they are overfueling a lot with .069 jets.

[RippinLipInMiami]

they have the metal bowls on them.

[Dave S]

I don't know what year stuff...but I ran into the bowl prob. A bit of junk at the base of the reed can hold it open. If that cly is spitting could be the problem.

[terry taylor]

Is this an idle spit or constant through the range ?

[RippinLipInMiami]

i believe it's just an idle spit. i honestly can't remember if it was spitting at higher rpm

[terry taylor]

An idle spit is sometimes caused by lean condition. The idle jets are [dry] air bleeds, located at the top front of each barrel venturi. Maybe you have a blockage of one or more,remove and inspect each one and blow compressed air through each vent in housing, and jet. check for size #thanks.

[RippinLipInMiami]

once i get all the correct size jets i will be doing another thorough carb cleaning with all jets removed. thanks