Question about 1981 Suzuki GS 750 L

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Fuel lines mixed up

Need to find out how the fuel lines need to run between tank and carbs

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Hi and welcome to FixYa,

Perhaps the best approach would be to reference a service manual available here as a free download. Scroll down to Suzuki GS750.

Good luck and thank you for using FixYa.

Posted on Apr 23, 2009


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Posted on Jan 02, 2017


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It may be fuel starved from either blockage in the carb or a broken intake fuel line. You can dump the fuel and mix up a back of fresh fuel with some system cleaner added and run it through and see if the unit picks up a bit. If a system cleaning doesnt improve performance with the gas tank empty look inside the tank and see if the fuel line is broken off or split. Many times fuel lines just get broken from alcohol fuels and age.

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There is a vent in the tank, it is situated on the right hand side of the tank, close to where the fuel hose exits the tank, the early vent looks like a round white pellet, the later vent is a white plug with a nipple on the top, the later vent will just pull out with long nose pliers, the early vent has to be extracted useing a self tapping screw, this of course will destroy the vent.

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Filled up my tiller with mix fuel ran it to half tank then it stopped running, when depressed the throdle it bogged out and stalled, restarted did the same thing, now pump bulb won't fill with gas either

One of 2 things has happened. You might not have mixed the 2 cycle oil in the fuel correctly when you added gas and you now have a large amount of 2 cycle oil in the fuel system or.... You have debris in the fuel system that now needs to be removed.

The fact that the primer bulb is not working is telling you that there is not fuel coming from the fuel tank. Most 2 cycle fuel tanks are vented. There is supposed to be a rubber in the top of the fuel cap that allows the fuel tank to breathe. If there is a vapor lock in the fuel tank due to the rubber missing or there is some other non-original form of fuel tank cap gasket, this will cause your current symptom.

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You have to ensure that with the fuel line to the carb disconnected that you have fuel flow to the carb. I suspect the problem lies in the line from the fuel tank. Some models have an in-line mini filter that can also clog. Just check for fuel flow at the carb connection... no fuel then check the tank for debris and the fuel lines for obstructions.

Thanks for choosing FixYa,

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Chain saws are known for plugged/pinched fuel lines

Drain the fuel tank
Remove the fuel line from the carb.
Blow air back in to the tank
Rinse out the tank
Repeat several times
Make sure your gas cap is clean and the vent in the cap is not plugged.
Make sure your air filter is clean
Refill with clean gas mix from a clean gas can
It should run for you
Let me know if this does not solve your troubles

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My Husqy 141 runs then stops

Shaemeus forcing a fuel line and breaking the carburetor will certainly be more expensive than saw shop service. Take the saw in. Most are barbed fillings, if one is exceptionally difficult let the saw shop break it and pay for its replacement. While there ask them to demonstrate how to disconnect the line. I suspect rather than a blocked line you have a hole or crack in a line.

A tune up with hose replacement I estimate at $60 at a Stihl shop.
New plug, new fuel filter, pressure/vacuum tests, carburetor adjustment. Actually a pretty good deal, tune up ($40). ALL hose replacement ($20).

If you have more questions or need additional help please reply below and I will get back to you. Thank you for using FixYa and Good Luck. HTH

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