Hey guys, was having some fuel contamination issues so I just finished putting in a new tank, pressure gauge, and cleaning the carb. Anyway go to fire her up and when it starts gas shoots out of the tube thingy (tried to look at a diagram to see what its called-no luck). I made no changes to any of the setting on the carb and cleaned it using carb cleaner and compressed air. Could I have put something back together wrong? Matt
You may have hung up a float, keeping the needle off the seat. Might be time to pull on or both bowls to check. Devon
Devon sounds right, check your float level, if that's OK you might have something stuck on the inlet needle or seat. Friends boat did this once and it was the smallest little piece of metal, you could barley see it, but it was enough that the needle and seat weren't providing a good seal, allowing gas to continue in a fill the bowl and flood the boat.
Thanks guys but I forgot to mention I'm an idiot. Could your show me what I need to check on this diagram. 136 and 94?
136 is the needle & seat assembly. You can unscrew this from the top of the carb, but will have to reset float level(s) afterwards. Devon
Yep, needle and seat. Even if it looks ok, change it with a new one. They may look ok but can still cause flooding issues.
First check your float level, with the car ideling, remove the site plug. You might want to have a small towel on the manifold to catch an fuel that might spill out. You should just have a slight dribble out of the plug hle if the float's set correctly. When you go to put the plug back in make sure the small gasket is on the plug. If fuel doesn't come out you can raise and lower the fuel level using the adjusting nut. With the site plug still out, take a screwdriver and loosen the lock screw head. When you do this you'll probably get a small squirt of fuel out from under the lock screw. Take a 5/8" wrench and turn the hex nut in the direction you need. If the fuel isn't coming out of the site plug a little, turn the nut counter clockwise to raise the level. Again, you just want fuel to barely run out of the hole. Clockwise to lower the level. If you have fuel coming out of that tube, you'll need to lower the level. When you get the level set right, retighten the lock screw.
OK I see how it works now, when the float comes to the top it hits the pin and stops the flow. Looks clean but I tested it with air and the float has to go all the way to the top before it enaged the needle. Thats probably my problem right?
If you can't get the fuel level down, you might have a bad needle and seat or something stuck on the seat. Here's a picture of the needle and seat To pull the assembly, have the motor off. Unscrew the adjustment lock screw all the way off. Again, there's some small flat o-ring gaskets, make sure you don't loose those. Now you're just looking at the hex nut that sits on the needle/seat assembly. The needle and seat assembly are threaded into the float bowl. Make a visual note of how far the assembly sticks up through the nut. As you unscrew the hex nut, it will back the assembly up and out of the carb. It'll come up about a 1/4" and then you can pull the assembly out. You can flip it upside down and you'll see how the needle slides up and down to the seat. Make sure there's nothing on either the tip of the needle or in the seat. Push the assembly back in the carb and screw it in with the hex nut to about where it was when you started. Put the lock nut and gasket back on. Check your fuel level again.
Ok got the float adjusted so when its half way up it hits the needle. I figure thats a good baseline to start at. Naturally while screwing with it I left the key on so I'm charging now.
the guys are right on, ck the float to make sure it is not filled with gas if it is brass and not saturated with gas if it is plastic foam.
VICTORY IS MINE!! Once I got the floats set up it runs great! I'm sure there are other adjustment that were thrown off by me taking it apart (for one thing its idling kinda high) but it runs :TU:. I'll do a little reading later and see if I cant get this thing dialed in. Thought I heard something about tuning a carnb with a vaccum gauge. Have to spend time with the wife now been screwing around in the garage for 2 days. Thanks again guys
This is also a good learning lesson if you ever have gas pouring out of there again out of the blue you have dirt on the needle and seat. Unscrew it, blow out the needle and screw it back in and you will be back on the road in no time.
