Just doing the carb. Looking for jet settings. Carb appears to be clean. Did notice when I took it apart the diaphram gasket is not whole. the pieces are still there. How to explain. The diaphram is still complete. Came apart like two pieces of cardboard would. It will go back together okay I think. This could have been the problem as air may leak in if the seal is not good. I am doing this for a friend. Someone else already took it apart to clean it. I brought it inside and let it warm up. Did not prime-choked it and it started. Ran it with full choke for 1 minute, than have choke and gradually opened it up with the throttle. Opened the choke and ran it at full throttle for 3-4 minutes. Shut it off and then ran it again. Worked fine. Left it outside for 25 minutes (-28C). He came to get it and it wouldn't run!!! Starts okay but won't run. So now I am taking the carb apart, checking the fuel mixture (he had fuel from August in it mixed at about 50/1. Should be 24/1. Do you know the settings? Thanks Rick The Pas, MB canada
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Re: Auger stalls won't keep running
The diaphram is 2 piece's (1 is gasket the other is the dia.) my suggestion would be to bring it to a repair shop and have the carb rebuilt so that everything can be properly set. Besides the jets needing to be set, the needle may need to be reset also. If the dia. was alittle stiff than its going to need a new kit in it. 2 cycle carbs are alittle more finiky than 4 cycle carbs.
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take apart your carb--sounds like your carb diaphram is not installed right the settings should be
1.5 turn out low jet
1 turn out high jet
that should get it running then some fine adjustment once its running
it is a garantee that the main jet is stoped up with that grayish dried gas minerals..this not in the main jet valve you can remove,but actually in the bore on the carb body... you can try to use torch tip cleaner to open the hole ...hope you the best ....it is a very hard substance...someone tried starting the bike after being set up for a while without removing carb and cleaning first.....sincerely;R.B.V.
If you haven't already, dump out gas and put fresh in it and try this, if it doesn't work you will have to clean the carb, take it apart and clean all jets ports etc and put back together and you should be Good to Blow Snow, pretty common problem with Small Engines that set half the season.
its prob a vacuum petcock, not a pump. they're a pita sometimes. you can rig them so they work all the time by opening them and fudging the valve (or buy a new one, cheap on ebay). choke should extend when it gets hot. you can test it with 12 volts. will extend and block the choke.
the gs700 has mikuni carbs, right? These carbs have a rubber fabric diaphram and o-rings, when you tore the carbs apart did you make sure to remove all rubber and plastic parts, all the jets have o-rings that would have been ruined, the plastic throttle/choke linkage should have been taken out. NEVER USE CARB CLEANER OR STARTING FLUID IN A MOTORCYCLE CARB. there are to many rubber parts. the rubber diaphram alone can run over $100.00 each. for the correct o-rings and gaskets I found ebay to be the best place to shop.Also, one of the characteristics of a suzuki in that era is they won't run right without the factory airbox installed. That cost me lots of time and money finding that out, lol.
Your problem is that the jet valve is being partially blocked. unscrew the carb. label the intake gas line and then the outflow, so you wont get mixed up when reattaching. unscrew both sides of the carb, on one side of the carb will be the pump diaphram and the other side will be another diaphram. you will see the metering valve which I have termed the "jet valve" unscrew the screw that holds it together with a phillips screwdriver. Be careful!!!, there is a tiny spring that pops out and is easily lost. Use a carb spray and clean all ports and holes. spray the jet and spring. On reassembling the spring be careful. Use a 150+ reading glasses if you are unable to see well. Carefully place the spring in the indented spot, place the jet between the grooves of the tiny leaver making sure that there is a part that must fit on the spring. If you fit it upside down then the machine will die off at full throttle. slip in the pin. Press down the spring and screw down the phillips screw. reassemble the carb exactly as you took it apart. It is important to remember or document. The first time i did it I made a tiny scratch between parts so i knew how to align them properly. After reassembly try starting. Rev at full throttle, if problem persists check the filter inside the gas tank it may be clogged. If it is replace. If problem is still there, open the carb again where the check valve is located, place a flat steel ruler over the valve assembly and press down the end with the jet. This will level the jet. If problem persist get a carb kit. Your carb will either be a zama or walbro.
Your carb should have another jet. What you cleaned was the main jet in the center of the carb. There should be another jet called a pilot jet. Often it has a metal plug covering it up so the setting can not be changed at that point. Instead, they want you to change the setting with the pilot air screw. In each case, if you remove the screw, count the number of turns for removal and put the screw back the same number of turns.
The pilot jet controls the idle. It picks up gas from the float bowl then the gas gets metered by the jet and the air screw then passes through a circuit (drilled passageway), in the carb casing and comes out in the center of the carb close to the needle jet. You will need to get the jet and circuit cleaned.
the red and white screws are the air and fuel mixture needles they may need adjustment if you are getting plenty of fuel to the carb. note that newer walbro carbs these mix set screws can only be adjuted very little. they will break if you twist to much. but firt when you took the carb apart was the fuel metering diaphram crisp or was it still flexable? ( black gasket thing under side cover . it has a small metal botton in the middle of it. if this does not flex freely then you need a walbro carb gasket set. mabe 5 to 10 bucks.