sxr 700.. bogged and died twice tonight.. gas or carbs?????

Y

yankeeslover

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Worried.. my 2000 sxr 700 for first time ever gave me some issues.. 2300 miles.. this is 1st year that I cleaned my carbs by myself and worried I screwed them up. I cleaned carbs about 1.5 months ago.. have since started sled once per week and always starts on 4 pulls.. thing idled great, never any issues. Will tonight we got first snow. My daughter who is just learning rode the sxr... she babied it and did not go over 20 mph the whole 10 mile ride.. every now and then I switched with her and opened it up.. ran beautiful..
After we got back home I let sled sit for 45 minutes and thats when issues started.. gave me real hard time to stay running.. I had to hold throttle in to keep it going.. died on me about 5 times.. playing with idle screw did nothing.. finally I opened up choke and it started like nothing wrong.. my buddy then rode sled for about 15 miles and it ran great.. lots of power.. after 15 miles he opened it up and went about 60mph.. when he stopped it bogged down again and shut off... we let it sit few minutes and it started again like no issues.. rode back the miles with no issues like nothing happened. I have to add that some of that gas is from last season.. I did stabalize it and mixed it with like 3 gallons of fresh gas.. what would do this? Sound like carbs?? They were spotless when I cleaned them in November. Would crap gas do this also? What else should I look at? Im real dumb with mechanics and hope its nothing major.... thanks again..
 
always throw the old gas out from last season/your pilots must of plugged up again.Remove the carbs and clean.Throw out whats left in the tank and run new stuff.Gas usually gets bad after a month..Never let gas sit for a long time these days..take it out and put in your lawn mower.
 
Did you have your carb heat on?
Yamaha added the carb heat on these sleds because in the right conditions[fresh snow, high humidity, ect] the front of carbs would build ice covering the air intakes for the pilot circuits causing them to run rich.

I also would get all that old fuel out of the tank and would add a bit of isopropyl gas line anti freeze in case there was some water in the fuel and tank.[there usually is with ethonal]

JM.02c

Bob
 
Agreewith general concession of old/bad fuel.I syphon 99.9% of fuel out of tank in the spring. You say you stabilized it? Red stabil? The red is almost pointless with todays fuel. Use the green (marine version) or something else. During the season I get ansy if very much fuel sits in the tank more than 3 weeks to a month, at 1.5 months I would have syphoned old or at least addedmore fresh prior to riding it. Starting sled once a week waiting for snow helps carbs but doesnt stop gas from going stale in tank.
 
If its running fine now should I let it go? I don't have a garage to clean carbs just outside bench hence why I cleaned before snow hit. But I also don't want to ruin motor. It idles good right now.. if I have to I can take carbs inside house but wife might kill me
 
yankeeslover said:
If its running fine now should I let it go? I don't have a garage to clean carbs just outside bench hence why I cleaned before snow hit. But I also don't want to ruin motor. It idles good right now.. if I have to I can take carbs inside house but wife might kill me
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Keep an eye on it, should be fine. Make sure you keep as fresh as possible fuel in it. Syphoning and refilling sucks but not as bad as rebuilding a engine. Your running premium?
 
Carb heater was on.. I can tear carbs apart again if need be... just tough w no garage
 
Check the carbs again to be safe, youd rather do that than replace engine parts. Also adding 5 gallons of good gas to 5 gal of bad gas gives you 10 gallons of crap. Your car or truck might not care but the sled does.
 
Sounds a lot like what I'm going through right now. Cleaned carbs 6 weeks ago and bogging now. Running like crap. My money's on us not draining old fuel completely out. I just dissconnected fuel and put some in a glass. It is very yellow. I then put some fuel I got 2 weeks ago in glass and its nice and clear. I even added I'd say at least 6 gallons of this year fuel and put startron with but still yellow. Once it becomes yellow I'm guessing that once the yellow in the carbs evaporates it leaves the wonderful jelly we have come to love. I'm really wondering if its even worth having a two stroke anymore. I'm sick of cleaning carbs already :whine:
 
its the gas quality in todays world.Price of gas goes up but quality goes down..go figure.I used to clean carbs pretty quick back in the day,but now I am even starting to hate doing it.I only do it once a year at least..but run premium fuel only that has no ethanol at all in it.But I bet eventually if I left the gas in my carbs and tank beyond a year..something won't be right..
 
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