Spitting fuel from carb throat

[Dngermouse78]

Hi all. My first post here, I've been able to find most answers by searching the archive however could not find a good answer on this issue.

Outboard in question is a 1976 55hp evinrude, model 55643e.

I purchased the motor a few months back from someone who did not know anything about it. The boat it was on had tags from 1997 so I assume that's the last time it ran. I replaced fuel pump, ignition coils, spark plugs, water pump impeller and rebuilt carbs. Adjusted carbs and timing per Joe Reeves instructions I located on this board. Runs great but carbs spit a little fuel out the front at idle and mid revs. Is this normal? Seems to be really bad on fuel economy as well.

Also, after setting the timing without engine running per Reeves instructions, it seems my timing did not advance the 4 degrees while running WOT on the water with an assistants help. I set it at 15 degrees with throttle at WOT and spark plugs out, rigged to a spark tester. On the water at full speed, timing is still 15 degrees. My engine calls for 19 degrees.

Thanks in advance for any and all replies.

 

[Dngermouse78]

Carburetor has been rebuilt with carb kits, all fuel lines have been replaced. I pulled and inspected the reed valves while I had the carbs off. As far as I can tell, they look good? No bent or distorted leaves that I can see with my eyes. Leaves seem to have good tension but I'm not sure how to properly test them. Compression was 150 both cylinders prior to running it for the first time last month. I tested compression the same way you would do a 4 stroke automotive engine, is this the wrong way to test it? Timer base seems to move smoothly all the way to the rubber stop although I have not greased it as you recommended. I will try to do that and check all grounds as well. Spark was tested at 7/16 inch, good blue arc. It runs great, just concerned that it is spitting fuel out the front of the carb into the silencer. It seems to drain into a hose at the bottom of the silencer and runs into the intake manifold (I think).

 

[racerone]

A fine mist spitting out is fairly common.------You could do a lot of work here and find out " it still spits out a mist of fuel at idle " and with the cover on the air box it would simply get pulled in on the next cycle.

 

[Dngermouse78]

Thanks racerone, that makes me feel better. This is the first boat I've owned so this is all new to me. I was an ASE certified auto mechanic some years ago so I have a good understanding of how engines work but not too familiar with 2 strokes.

I was mainly concerned because my fuel economy seems so poor. I have nothing to compare to so I have no idea what to expect in fuel consumption.

 

[collector_inspector]

Ahh, if your motor runs well and tunes up well this year Old Dear you are on a winner!

Never compare fuel economy, modern different stuff to what you have aye?

Older Dears like a refined diet of "Too Much". A bit like Coffee and Cream with every low cal diet drink

They thrive on that and live long aye?

Stick to the rules fuel mix and service details to keep an honest runner alive.

It will reward you in kind.

B