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Gas coming out of muffler

#1

Jakobbbbbb

Jakobbbbbb

I have a John deer gx75 and I think the spark might be off because I have spark and I’m getting fuel but it won’t fire. However after cranking on it for awhile I have gas coming out of the muffler please help


#2

Scrubcadet10

Scrubcadet10

How long is cranking it for awhile? good way to burn up a starter.
wcheck the engine oil to be sure it isn't over full or smells like gas, without a little more information it sounds to me like your float needle has failed and is not stopping fuel flow into the carburetor. i have a RX75, and the needle failed on it this fall.

#14

ARIMain - GREENPARTS

Buy Genuine OEM John Deere parts for your John Deere GX75 RIDING MOWER (9 H.P. ELECTRIC START) -PC2314 carburetor gx75: fuel & air and ship today! Huge in-stock inventory of OEM John Deere parts.
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#3

Richard320

Richard320

You're either flooded -- see post above -- or you jumped time and the spark comes at the wrong time so the gas that got drawn in gets pushed out the exhaust unburnt. That would be a sheared flywheel key.


#4

S

slomo

Carb needle sticking open. Check oil dipstick for fuel smell. If you smell fuel in the oil, fix or replace the carb and CHANGE THE OIL.

slomo


#5

Jakobbbbbb

Jakobbbbbb

Scrubcadet10 said:
How long is cranking it for awhile? good way to burn up a starter.
wcheck the engine oil to be sure it isn't over full or smells like gas, without a little more information it sounds to me like your float needle has failed and is not stopping fuel flow into the carburetor. i have a RX75, and the needle failed on it this fall.

#14

ARIMain - GREENPARTS

Buy Genuine OEM John Deere parts for your John Deere GX75 RIDING MOWER (9 H.P. ELECTRIC START) -PC2314 carburetor gx75: fuel & air and ship today! Huge in-stock inventory of OEM John Deere parts.
www.green-parts-direct.com www.green-parts-direct.com
Click to expand...
The float is fine I checked it and I have already changed the oil


#6

Jakobbbbbb

Jakobbbbbb

Scrubcadet10 said:
How long is cranking it for awhile? good way to burn up a starter.
wcheck the engine oil to be sure it isn't over full or smells like gas, without a little more information it sounds to me like your float needle has failed and is not stopping fuel flow into the carburetor. i have a RX75, and the needle failed on it this fall.

#14

ARIMain - GREENPARTS

Buy Genuine OEM John Deere parts for your John Deere GX75 RIDING MOWER (9 H.P. ELECTRIC START) -PC2314 carburetor gx75: fuel & air and ship today! Huge in-stock inventory of OEM John Deere parts.
www.green-parts-direct.com www.green-parts-direct.com
Click to expand...
The float is fine I checked it and I have already
Richard320 said:
You're either flooded -- see post above -- or you jumped time and the spark comes at the wrong time so the gas that got drawn in gets pushed out the exhaust unburnt. That would be a sheared flywheel key.
Click to expand...
Richard320 said:
You're either flooded -- see post above -- or you jumped time and the spark comes at the wrong time so the gas that got drawn in gets pushed out the exhaust unburnt. That would be a sheared flywheel key.
Click to expand...


#7

Jakobbbbbb

Jakobbbbbb

Richard320 said:
You're either flooded -- see post above -- or you jumped time and the spark comes at the wrong time so the gas that got drawn in gets pushed out the exhaust unburnt. That would be a sheared flywheel key.
Click to expand...
What are some other symptoms of a sheered flywheel key


#8

Richard320

Richard320

Jakobbbbbb said:
What are some other symptoms of a sheered flywheel key
Click to expand...
Generally it sounds like it wants to start. So close. It just won't. It has full compression, so if you're pulling on a rope it feels the same. Your electric starter probably sounds normal. You'll have spark. A little gas in the carb won't get it going. By rights, doing the obvious checks, it should start. But it won't.


#9

Scrubcadet10

Scrubcadet10

Jakobbbbbb said:
The float is fine I checked it and I have already
Click to expand...
please explain how you checked the float.


#10

Jakobbbbbb

Jakobbbbbb

Scrubcadet10 said:
please explain how you checked the float.
Click to expand...
I pulled the carb off removed the bowl and shook it and didn’t hear any gas in it and it moved up and down freely


#11

Jakobbbbbb

Jakobbbbbb

Richard320 said:
Generally it sounds like it wants to start. So close. It just won't. It has full compression, so if you're pulling on a rope it feels the same. Your electric starter probably sounds normal. You'll have spark. A little gas in the carb won't get it going. By rights, doing the obvious checks, it should start. But it won't.
Click to expand...
I’m going to put a refresh kit on it and if that dosent solve it then I will check the flywheel key


#12

S

slomo

Sir, gas coming out of the muffler is the carb needle sticking OPEN when it shouldn't be. Get the carb addressed first before messing with valve stem caps and cup holders. Did you pull the oil dipstcik and smell for fuel? Looks like you breezed over everything I mentioned.

slomo


#13

S

slomo

Put up a video. I would like to see this fuel issue.

slomo


#14

S

slomo

Jakobbbbbb said:
I pulled the carb off removed the bowl and shook it and didn’t hear any gas in it and it moved up and down freely
Click to expand...
If you didn't "hear" any gas in there, how is fuel coming out of the muffler? Remove the carb off the engine. Turn the fuel ON. See if fuel comes out of the carb throat. If you didn't hear any fuel it might of been full. Lastly listening for fuel is not a proper test.

slomo


#15

Scrubcadet10

Scrubcadet10

Jakobbbbbb said:
I pulled the carb off removed the bowl and shook it and didn’t hear any gas in it and it moved up and down freely
Click to expand...
That still doesn't mean the Needle (which the float is attached to) is sealing.


#16

J

joe_cooler

Agree with above. My float was fine and did a full clean of the carb and still had the issue. Replace the carb. They are inexpensive. I did and my rider runs great! 22HP B&S V-Twin on mine.


#17

VRR.DYNDNS>BIZ

VRR.DYNDNS>BIZ

Jakobbbbbb said:
I pulled the carb off removed the bowl and shook it and didn’t hear any gas in it and it moved up and down freely
Click to expand...
just a guess - have you tried a new plug?


#18

J

jjgurley

How old is your gasoline? I was surprised that my 6x4 would not start because of a few tablespoons of water in the fuel - fuel gauge let rainwater in. I expected it to at least run poorly.


#19

M

muddy51

often a small piece of trash gets to the needle and seat via the inlet fuel line
try lifting float by hand and verify that carb inlet fuel flow stops
if it leaks, remove float and needle and fuel line and spray a little carb cleaner
sometimes the needle will wear enough to cause it to leak but it's more likely a piece of trash


#20

L

loganh3101

The float can move up and down freely and the needle valve still be stuck shut. Will it crank if you spray some starting fluid in the carburetor throat?


#21

M

muddy51

These days many types of small equipment don't come with inline fuel filters
I add one when needed to prevent this problem


#22

B

Born2Mow

muddy51 said:
These days many types of small equipment don't come with inline fuel filters.
I add one when needed to prevent this problem.
Click to expand...
I add one when needed to help prevent this problem.

As long as the fuel tank is mounted above the carb, old man gravity will make sure you have this problem.
► You need a manual fuel shut-off valve and a filter.


#23

S

slomo

loganh3101 said:
The float can move up and down freely and the needle valve still be stuck shut. Will it crank if you spray some starting fluid in the carburetor throat?
Click to expand...
The guy has EXCESSIVE fuel. He doesn't need more sprayed into the cylinder. Fuel is draining out the muffler. Stop the excess flow.

slomo


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