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brent bodiford
New member
Username: Bodbr01
Post Number: 1
Registered: 04-2005
Posted From: 141.202.248.11
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, April 03, 2005 - 09:42 am: | 
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On the carb, what is the 1/4" line at the top of the carb for? The fuel line is routed near the bottom of the carb where the needle valve sits. Someone else worked on this, won't start, and the top line at the carb isn't attached to anything. I think it's also another fuel supply point where a tee goes to both??? Howver, the vacum fuel pump does work, but the Argo won't start. I can pour fuel into the top of the carb and it will run. |
brent bodiford
New member
Username: Bodbr01
Post Number: 2
Registered: 04-2005
Posted From: 141.202.248.11
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, April 03, 2005 - 10:12 am: |
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In addition, this is a '99 Bigfoot with the 18 HP Vanguard. Already cleaned the tank, replaced the fuel line and cleaned out the carb/jets. |
larry wood
New member
Username: Lawpressman
Post Number: 1
Registered: 04-2005
Posted From: 205.188.117.10
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, April 03, 2005 - 07:19 pm: |
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THE LINE ON TOP OF THE CARB IS THE FUEL BOWL OVERFLOW AND MOST OF THE TIME NOT USED. |
Allan (Unregistered Guest)
Unregistered guest
Posted From: 4.240.0.248
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, April 03, 2005 - 11:18 pm: |
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Brent:
I think you are referring to the electric shut off valve. What you need to do is turn that out and then break off the end of the prong.
That electric valve shuts off the fuel when you turn off the key. I have noticed no adverse effects after breaking mine off.
Allan |
david berger
Member
Username: Davidrrrd
Post Number: 28
Registered: 01-2005
Posted From: 172.139.79.27
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, April 04, 2005 - 09:51 am: |
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brent if this is a micuni carb your nedle might be stuck, they can get a little worn and stick in the seat, if this is the case you probly need a new neadle and seat, there are probly a number of neadle/seat comboes so take the carb with you to the places you might find parts at,(snowmobile shops, small engine shops, power equipment suplyers, ect..ect.. also maybe quade dealers,
it is also posable dryed up gas from previouse season might stick the neadle,
if you replace the neadle and seat see if they also have new bole gaskets, stock up there cheepr to buy befor you need them. |
brent bodiford
New member
Username: Bodbr01
Post Number: 3
Registered: 04-2005
Posted From: 141.202.248.12
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, April 04, 2005 - 08:03 am: |
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Thanks much folks. I'll 'get rid' of it. Does anyone have any idea why fuel would NOLT go into the carb. Fuel is flowing and the bowl if full; however, fuel is not getting to the top of the carb. I've taked the carb apart of cleaned w/carb cleaner. I think all of the tubes/jets are open. Any ideas??? Thanks...Brent |
fred sain (Unregistered Guest)
Unregistered guest
Posted From: 12.168.170.136
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, April 04, 2005 - 11:01 am: |
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Brent, The line on top is as Larry Wood said, over-flow. Nothing hooks to it.
Allan, you must have a Kawaski engine, that is the only Argo that comes with a fuel shut-off. |
Jerry R. Nuss
Junior Member
Username: Jerrynuss
Post Number: 17
Registered: 02-2005
Posted From: 66.20.226.7
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, April 04, 2005 - 07:51 pm: |
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Are you trying to start it with the air filter in place? If it is in place remove it and try starting it.
Does the float move freely and the needle valve above the float move up and down?
You said you replaced all the lines to the tank and have a patent line all the way from the tank.
Have you checked the line for any leaks or loose connections that would break vacuum?
Is the tank full of fresh gas or is it low on fuel?
Do you have a vented gas cap or open vent to the tank?
Did you install a fuel filter and is it facing the right direction?
These are just some ideas.
How do you know the vacuum pump is pulling enough vacuum? Have you attempted running a hose to the fuel inlet of the vacuum pump and pulling fuel from a different container than the machine's fuel tank. |
brent bodiford
New member
Username: Bodbr01
Post Number: 4
Registered: 04-2005
Posted From: 141.202.248.12
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, April 10, 2005 - 09:24 am: |
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The float moves freely and the nedle valve is below the flange of the float arm in an indention made for it(fuel line connects to this fitting below the needle valve seat). It seems to move OK. Vacum is OK, air cleaner is off, and bowl of carb is full of gas. I do not see any fuel coming out of the jet at the top of the carb though. This is a Nikki carb on this 18 HP Vanguard. How does the carb 'pump' gas to the top jet? If this is something i need to worry about. It would seem I would have to remove the engine cowling, at the least, to even access the two bolts holding the carb on. Doesn't look too easy at all to remove this carb. Any suggestions. |
Rogersmith
Member
Username: Rogersmith
Post Number: 24
Registered: 01-2005
Posted From: 4.244.174.105
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, April 10, 2005 - 09:22 pm: |
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Brent, the main jet you're talking about is vacuum fed. It pulls through the perforated immersion/emulsion? tube pressed into the top cover of the carb and of course is immersed in gas.
When my argo was new, if it sat for a month, it would start, use up the fuel in the bowl, and die. To fix it, I'd have to pull the fuel pump apart and clean, and also pull the top off the carb and clean. Also the fuel filter would clog easily. Pulled the gas tank out and it had a yellowish gum deposit. It took a serious solvent to eventually dissolve it and rinse it out. I use Berryman B12 Chemtool carb cleaner. Havn't had a problem in years since the tank cleaning.
You can clean everything in the carb with just the top off, Berryman's and compressed air. I suggest pulling the idle jet screw out for cleaning. It's behind the black metal cover/grille on the side of the carb. It should have a plastic cap on the jet to limit adjustment. The cap and metal grille stay in my tool box. Screw it in till it seats if you want to know where it's set at, then take it out.
Get the gas out of the bowl, and stick the Berryman spray tube down in the bowl on the main jet. It should come out a hole above. Don't let it hit you in the face when it does, Berryman's has tolulene, xylene, MEK, etc. Spray it in the hole where the idle jet screw was, spray all the holes and passages you see. Put a rag below the idle jet screw hole so the Berryman's doesn't dissolve the paint off the engine cover. Then blow them all with compressed air. Do the top of the carb too. The perforated tube is A BIG REASON FOR RUNNING LEAN if not clear. Make sure the smallest holes are open. They make look clean, but I've had to poke them with a tiny needle, even after a strong carb cleaner, to get them open. Make sure the small tube is open.
There's a plug in the bowl casting if the main get should need to come out of the bottom of the bowl, in case you have some major blockage.
With the idle circuit clean and set just slightly rich, there's no hesitation off idle, that some complain about it not having an accelerator pump. Set it as lean as you can(screwed in) but rich enough to run without any hesitation when the throttle opens.
Only other thing I can think of is if the bowl cover was bent from overtightening or the gasket not sealing those inner passages. Had mine off many times though, no problems with the original gasket. |
Neil Whynot
New member
Username: Hadesdragon
Post Number: 1
Registered: 02-2011
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, February 06, 2011 - 01:22 pm: |
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how does oil get to my breather, the air filter is soaked in oil.what would cause this. It cause my engine to stop running till i remover the air filter and made it home i need a new filter but why the oil up there its a 18hp vangaurd v twin any help would be apprecated. thanx Neil. |
Timothy Schotanus
Member
Username: Mudbuster
Post Number: 39
Registered: 01-2005
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, February 12, 2011 - 07:39 am: |
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Not sure on this but someone once told me that this is a sign of more serious engine problems. Hope that there is a small engine mechanic out there that can help more |
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