please help, fuel problem

[selmi113]

im restoring a 1965 40 hp evinrude twin, i have taken out the carb about 10 times and made sure its adjusted right new kit for it, new reed plate and leafs, 90 psi on the pistons both of them read the same, fuel fills up in the bowl of the carb.
i took a white paper and put it against the spark plug holes and i dont have fuel going to the pistons, when i crank it over small drips of fuel comes out of the carb throat, my problem is i cant get fuel to flow to the pistons?

 

[nwcove]

Re: please help, fuel problem

will it fire up if you squirt some premix directly into the carb throat?

 

[selmi113]

Re: please help, fuel problem

I tried that and nothing..

 

[lindy46]

Re: please help, fuel problem

Do you have good spark?

 

[itsaboattime]

Re: please help, fuel problem

Squirt a little premix into the spark plug holes and reinstall the plugs. See if it starts. If it does then it will probably die in a few seconds once it burns through what you squirted into the cylinders.
Kind of a dumb question, when you turn it over can you feel vacuum through the throats of the carbs?
Another dumb question, when you installed the reeds, could you have gotten them in backwards so that when vacuum is created in the crankcase it is actually closing them instead of opening them?

 

[selmi113]

Re: please help, fuel problem

Those are great questions. I tried praying pre mix into the pistons and I got nothing I do have a spark but I'm thinking that it might be weak. When it comes to the carb very hard to tell but I'm gonna go with no I can't feel a vacuum. Reed only goes one way so you can't get that wrong

 

[lindy46]

Re: please help, fuel problem

If you sprayed gas directly in the cylinder and got nothing, then you have a spark issue.

 

[selmi113]

Re: please help, fuel problem

I can fix that I have new coils but the condensers and points are old ill change those and I should have a good spark. I still can't get the fuel to go to the back of the pistons. I just rebuilt the engine and installed new rings. My compression is at 90 on both pistons. Is that enough to pull the reed valves open