Question about 1980 Suzuki Gs 550 L

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Fuel coming out of the rear of the carbs

I have a 1980 suzuki gs 550l that when i put gas in the tank with gas it goes out through the rear of the carbs into the air box, then drains out the hose onto the ground. at a pretty good rate also. could this be a float issue? or is there something else wrong here. also on this model, is there an actual shutoff valve for the tank? mine doesnt have one but I think there used to be one there. tihs repacement part is almost 100 bucks and i dont want to buy if i dont have to.

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U need new needel and seats in the carbs . u can check the old ones with a vaccum gauge the should hold pressure at about 5 psi

Posted on May 13, 2009

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Have a 1980 suzuki gs550l w/o tank, got a new tank but dont know which lines go together theres four lines on the carb

there is a small port on top of the second carb on the right, that goes to the small port on the fuel petcock mounted to the tank. The main fuel supply (larger port on tank) goes to the bottom fuel supply rail with the only carb port on that rail. The upper two ports between #1 & #2 carb and between #3 & #4 carbs are vents and those hoses get plumbed down under the air cleaner, careful not to pinch the vent hoses or the bowls will not fill up with gas. This is the same for an automatic petcock or a manual one.

Aug 15, 2010 | 1980 Suzuki Gs 550 L

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I have an 82 suzuki gs 550l and there's a cylinder that is not working. i know this because i can hold on to the pipe coming out of it when the other 3 are very hot, this doesn't happen all the time though...

The first thing I would do is to stick in a new spark plug even if the shop says all is well. It will only cost a couple of bucks and now you KNOW the plug isn't the problem. If the shop tested the ignition system and all is okay, have them check the compression on the bad cylinder. Bad valves in that cylinder could be the problem. If the compression is okay, another possibility is a plugged main jet or gas is not getting into the carb due to a float being stuck closed or fuel line obstruction. Also, but less likely, is water filling the float bowl. Condensation inside the gas tank can make it into a carb. Bikes do not run well with water in the gas.

Jul 30, 2010 | 1980 Suzuki Gs 550 L

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I have a 1981 gs 550L i can get it started but it will idle then high rev all on its own to about 5-7000 and slowly work its way down. just had the carb rebuilt and its still doing it.

Check the mouting locations and carb boot/seals for cracks. this appears to be a vaccum leak nad the previous area's mentioned should be checked as well as throttle position.

Apr 14, 2010 | 1980 Suzuki Gs 550 L

1 Answer

1980 Suzuki GS 550L jets

the jetting/ jets are fittings inside of the carburators that allow onlky a certian amount of fuel to burn so the motorcycle does not flood itself out by having to much or to little fuel

Nov 27, 2009 | 1980 Suzuki Gs 550 L

1 Answer

Connect the gas tank to carbs 81 suzuki gs650l

May I suggest a trip to your local library. Cycle repair books should be in 646 stacks of reference.

Oct 05, 2009 | 1980 Suzuki GS 750 L

2 Answers

1980 gs 1000 fuel petcock has two connections where do they go?

On the one that has two hoses does it still have an "Off" position? Usually petcocks that have two hoses, one goes to the carb vacuum, and the other is for a fuel supply for the engine. That way it only allows fuel to flow when the engine is running. I have found these to be a poor design and can often leak and allow fuel to run into the engine if your carbs are acting up. If the replacement only has one hose, then it will work fine, just be sure to cap off the vacuum port on the carb.

Sep 24, 2009 | 1978 Suzuki GS 750 E

1 Answer

The fuel lines pulled out of my 1978 GS550 when I was replacing the clutch cable. I need help hooking them back in the right places. I don't know which are fuel lines and which are vacuum and how they...

You will have two lines coming from the petcock on the bottom of the gas tank. the small one goes to the front of the number one carb, and the larger one plugs onto the fuel rail in the middle of the 4 carbs on the back. The lines that run between the 1 and 2 carbs and the 3and 4 carbs are just overflow lines, so they don't hook on anywhere else.

Jul 13, 2009 | 1980 Suzuki Gs 550 L

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