Question about 1979 Suzuki GS 750 E

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Gas is not sucking through to the engine..bike is turning but not starting

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IF YOUR 750 IS ANYTHING LIKE MY 1979 850 THERE ARE VENT/VACCUM LINES ON THE TOP SIDE OF CARBS ONE OF THE VACCUM LINES MUST GO TO GAS TANK TO GET THE FUEL PETCOCK TO PROPERLY OPEN AND ALLOW GAS TO FLOW CONTINUOUSLY TO FLOAT BOWL

Posted on Nov 01, 2010

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My bike bike runs on main tank even on low fuel..it somtimes shows some missing. I think my reserve tank doesn't work.Any suggestions?


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2002 Kawasaki ninja zx 600r how do you drain fuel?


Does your bike have a vacuum tap? Sounds like your bike has a vacuum tap. In that case you should unplug your fuel hose, and unplug the hose that goes from the fuel tank to the engine. This hose should be smaller and should be unplugged at the engine side not the gas take side. Apply a vacuum to the hose (suck it), and you should have gas coming out of the main fuel line you disconnected. Make sure you have something to put the fuel in. If you can't suck hard enough (hehe... sorry coun't resist). plug the hose back on the engine and spin the starter a few times til fuel comes out. This may need to be repeated a few times.

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My Kawasaki 650 sr 1978, wont start,is gas problem because,I start on the bike and in 5 seconds turn off,carburator are clean gas valve has 2 gas out let looking just 1 out let sended gas to the...


arnt the one the vacuum pipe, between the carburator and the sleeve barrel is n nipel were the vacuum pipe must come one it sucks the and open the valve to let the caburator so it can get petrol just see maby im wrong

Feb 01, 2015 | kawasaki Motorcycles

1 Answer

Backfires when i let off the gas


When you let off on the gas on your bike, the fuel air mixture to the engine is extremely rich. So rich in fact that it will not burn. If your bike is backfiring through the exhaust with a loud pop, this is usually caused because your exhaust system has an air leak in it somewhere. Air is sucked into the exhaust system leaning out the fuel air mix and turning it into a combustable mixture which then ignites causing the pop. Check all the joints where the parts of your exhaust system come together.

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I put diesel fuel in my bike. I have drained the fuel from the gas tank and put gasoline in but it will not start. It turns over but no start. I have not replaced the spark plugs. What should I do?


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2 Answers

I would like instructions on how to drain the carb for winter storage


Please do this: Get a fuel stabilizer such as StaBil, from your auto parts or motorcycle shop place. Go to the gas station, put the amount of stabilizer required in yourf tank, then fill the tank. Go for a little ride. When you get home, turn off the fuel valve. Let the engine run until it stop (runs out of gas). Store your bike in a cool, dry place.

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a

Dec 05, 2009 | 2003 Honda VT 750 CD Shadow A.C.E. Deluxe

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I have to have full choke when I start bike, warm or cold.I've cleaned carb,s and passages seem clear. I,ve been running bike with air cleaner off, will that make a differance? GS 750 - 1978


your engine will **** in an average of almost a teaspoon of dust an hour of running without a airfilter on. this dust wears out the rings in your engine and everything else it touches in your engine. Lower compression and partially clogged jets lower the vaccum that your carbs pull in. Your bike should have a vaccum operated petcock that allows the fuel into your carbs. My guess is that you have low vaccum pressure. You might just need to replace a vaccum line or a petcock. Try pulling off the vaccum line from the front of the second carb and sucking on it until you see the fuel line fill up a little (don't worry, gas doesn't go threw the vaccum line so you won't get a mouth full of gas). Once you see the line about half full of gas or better. Try starting it up without the choke (engine should already be warm). The reason why I think this might be the problem is because when you choke a engine on these carbs, you increase the vaccum in the lines. Let me know if when it is warm, before you start it, if it already has about half of the gas line filled up. Good luck and let me know how it works out.

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2 Answers

THE BIKE WIIL START RUNS SMOOTH FOR 5 TO 6 KM AND THEN WILL CUT OUT TURN OF THE BIKE AND TURN ON AGAIN THE FUEL PUMP WILL PUMP AS IF NO FUEL WAS IN THE BIKE THE CARBS WILL FILL UP AND THE BIKE WILL START...


Your fuel tank breather is blocked. As the fuel is sucked out of the tank a partial vacuum is built up and no more fuel can come out.
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1 Answer

Yamaha 2002 TTr 250


Hi hoeygatt

Look around your bike near where the throttle cable meets the engine, when you pull the throttle, the cable pulls a quarter circle piece of metal which is connected to a spring, then connected to that should be a screw, that is the idle screw, turn it very slightly, usually clockwise to make the idle higher, and this should sort out the problem.

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Kind regards
BearWeb

Apr 12, 2009 | 2002 Yamaha TT-R 250

1 Answer

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