Carb Questions
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Posted on Sunday Apr 28, 2013 at 6:06 PM  

Give me a call when you get a chance. I keep missing you on your phone. I have my dad's boat in my driveway and I'm trying (again) to get the carbs to quit leaking. I'm not sure if it's leaking out around the bowl or coming out the throat of the carbs like the bowls are overflowing.

I have a question about how to adjust the floats. The measurement in the book says 1/4 inch, which is where it is as it sits upside down... But I can push it down another 1/8 of an inch by compressing the spring. Is the measurement supposed to be with the spring compressed or not?


Posted on Sunday Apr 28, 2013 at 9:28 PM  
I always thought it was upside down, no push. You don't want to push on the needle, might damage the seal or seat. But, I am not a mechanic.....
You Can Tune a Piano, but You Can't Tuna Fish (REO Speedwagon)
Posted on Sunday Apr 28, 2013 at 10:51 PM  
I agree with you...

I've come to the conclusion that I need to replace the float. It's a foam style float and some of the outer layer is chipped off, exposing the porous material inside.

After I tore it down and the float was dried for a while, I hooked up the gas line direct to the one carb and I could pump it up without it leaking. In the time that it took me to bolt it back on the motor, I tried it again and it leaked out the throat of the carb and even shot out the economizer jet. I'm guessing that the float is absorbing some gas and not floating right...

The top carb isn't leaking, but I plan on buying two float and replacing both.
Posted on Monday Apr 29, 2013 at 9:22 AM  
Sean did you also put new needle seats in? You need to inspect the needle tips themselves uder a magnifying glass, the rubber tips will deteriorate letting gas pass by - anytime I take a carb down I always use new needles , seats, and floats if I can get them --
Those who would give up constitutional freedoms to elected officials in exchange for a false sense of security, deserve neither freedom or security.
Posted on Monday Apr 29, 2013 at 12:32 PM  
The needle/seat were installed new when the carbs were rebuilt last year, but I may buy another set for this one that's not seating just in case.
Posted on Tuesday Apr 30, 2013 at 10:33 AM  
Okay Tony (or whoever else may be able to answer this),

I installed the new float and needle...(The seat does not come out on this carb)

It seems to seal better than it did before. I can still overfill the bowl by squeezing the bulb, but I have to squeeze it pretty hard to get it to push past the needle. It only does it on the lower carb, but that may just be the path of least resistance for the fuel pressure.

My question is this; Should you be able to sqeeze the bulb hard enough to force the needle out of its seat?

I'm going to run it tonight when I get home and see if it still leaks while it's running.
Posted on Wednesday May 1, 2013 at 8:18 AM  
The old motor ran great on the trailer (backed in to the water) last night. Started right up and idled by itself on the first try. No gas leaks!!!

Now, I just have to get the water pump working so I can take it out on the water and see what she'll do.
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