Great doc, so I definitely have a mechanical pump.. So I just need to Get a tool to test the fuel pressure so I can know if the pump is bad, the diaphragm has broken down. Right?
Your movie seems to show fuel dribbling out of the accelerator pump jets. And that is weird. Check your fuel tank vent to be sure it isn't blocked with a wasp nest or something. Wild guess, but if it is not breathing heat could be pressurizing your fuel tank and pushing fuel up. Also when your carb is dripping like this, open your gas cap and listen for a hiss or fart. If so, your tank is not venting properly. I think float bowls are vented, but if not pressure could be relieving itself thru the accel. pump circuit.
Do agree, mechanical fuel pump, so either there is something caught in the needle seat, to much pressure or float level is not correctly set. My guess with new rebuilt, it has an incorrect float level set
Great doc, so I definitely have a mechanical pump.. So I just need to Get a tool to test the fuel pressure so I can know if the pump is bad, the diaphragm has broken down. Right?
Thats not what I said. I said the hose is not used with an electric pump. If you have a electric pump is could have just been left on the carb.Follow the metal fuel line from the carb and see what it connects to.
I did, it is a mechanical pump. The yellow tube does not appear to be filled with fuel, so does mean that the fuel pump is operating properly? Or the only way to tell is pressure test? I guess I'll have to open up the carburetor, I was just trying to avoid that , that's why I bought a whole new one, got tired of messing with my old one . Was hoping to just bolt on the whole assembly and go boating ugh lol
The float may have been set correctly in the rebuild, but may have been moved due to bouncing around during shipment (don't know). If it was me I would check fuel pressure first only because I have the fitting to just attach and check.
If I didn't have the fitting, I would take the top off and check float level first.
Just replaced that same carb on a customers boat, could not get it to run correctly.
Ended up removing and pulling apart, found the float setting way to low.
After setting it correctly, it now runs like a champ.
Just because it's new don't mean it's right.
As stated, shipping may have moved it, or was not right from the get-go.
The float may have been set correctly in the rebuild, but may have been moved due to bouncing around during shipment (don't know). If it was me I would check fuel pressure first only because I have the fitting to just attach and check.
If I didn't have the fitting, I would take the top off and check float level first.
So I took your advice. Since I do not have the tool to check the fuel pressure, I went ahead and took my old carburetor apart and adjusted the float to recommended settings. Close as I could get. My old carburetor actually fired up and I got it running . I did not have my linkage hooked up so the accelerator pump is not hooked up. I wonder if my throttle cable could be putting pressure on that linkage causing it to spurt fuel oh, maybe it needs adjusted ?
Side note though, it ran real nicely last night and fired up one turn the key like a fuel injected car, I let it sit all night, and then tried for a cold start this morning, it did fire up with two Primes, but if idled really high, about 1200 RPM.
I did not have my linkage hooked up so the accelerator pump is not hooked up. I wonder if my throttle cable could be putting pressure on that linkage causing it to spurt fuel oh, maybe it needs adjusted ?
Need to get all the linkage hooked back up
As far as the throttle cable, install cable on carb with throttle plate closed. Now adjust barrel nut out one more turn to help hold the carb closed. If you ever need to adjust the idle stop screw, you may need to readjust the cable barrel nut
Describe flooding!
Fuel dripping inside while the engine running may not be a problem unless excessive, like fuel running out the throttle plate shaft onto the intake making a puddle. A stream only emanates from the accelerator pump jets when you accelerate. Usually enough gas in the carb bowl for a couple of shots from the accel pump.
Describe flooding!
Fuel dripping inside while the engine running may not be a problem unless excessive, like fuel running out the throttle plate shaft onto the intake making a puddle. A stream only emanates from the accelerator pump jets when you accelerate. Usually enough gas in the carb bowl for a couple of shots from the accel pump.
If the idle is properly adjusted on the carb and the timing is correct for the normal 750 - 650 out of the water (in water of course is what matters.)
The two key causes that gas would be leaking out of the venturies after the engine stopped running is fuel pump over-pressurization or defective/incorrect setting of needle & seat.
Please stop guessing and get inline fuel pressure adapter and low fuel pressure gauge, and verify you have no more than 4 to 6 PSI of fuel pressure going to the carb.
If fuel pressure checks out, then you can focus on the carb as the issue.
Otherwise you'll end up throwing parts at it and get no where.
