| Author |
Message |
    
Melly_mel_s1
| | Posted on Wednesday, September 15, 2010 - 03:23 pm: | 
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Hi all, I have a 96 S1 that i just bought off my uncle. When i push the choke more than half way in it dies. I took apart the carb but dont see where if any place to adjust it. What am i doing wrong?
TIA |
Prior
| | Posted on Wednesday, September 15, 2010 - 11:24 pm: |
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Does this happen when the bike is warmed up or when you first start it? You may need to bump up the idle speed, which is done with a cable with a knob what's hooked up to the carb. |
Sparky
| | Posted on Wednesday, September 15, 2010 - 11:52 pm: |
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If the bike hasn't been run for some time, chances are that the idle jet is plugged partially or completely, especially if the gas smells bad.
One way to check this condition is to remove the idle jet and see if it's plugged by shining a light through it. |
Road_thing
| | Posted on Thursday, September 16, 2010 - 10:05 am: |
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What Sparky said.
rt |
Melly_mel_s1
| | Posted on Thursday, September 16, 2010 - 01:20 pm: |
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Well, I start the bike with it fully extended, after about a minute or 2 i will push it a quarter of the way in, wait a few more minutes then push it half way. once it past the half way mark it will just die. I tried adjusting the knob for the idle but it helped a little. I will try again.
I know it sat for maybe a year or so. I also noticed when it was running I smelled something like sulfur...would that be the smell you're talking about sparky?
Now removal of the idle jet...is this something I can find in the manual how to do? And if its plugged how would i go about cleaning it out? any type of cleaner/tools should use? |
Sparky
| | Posted on Thursday, September 16, 2010 - 06:38 pm: |
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Old gas in the tank will smell remarkably like turpentine. If this is the case, drain, dump or siphon that gunk out immediately because if you run that through the engine, you risk gumming up the intake valves which could cause, as a minimum, sticky valves or, worst case, bent pushrods.
You see, old gas eventually deteriorates into a sticky, gummy concoction that can ruin engines as mentioned above.
As far as getting to the idle jet, you have to drop the float bowl and, I believe, the idle jet is at the bottom of the jet cluster where the slide needle goes up and down in.
Most carb cleaner sprays from auto parts stores should be able to dissolve any gunk in the jet providing you direct the delivery tube against the jet. If it's completely plugged, I've had good luck taking a piece of stranded electrical copper wire that's small enough to pass through the jet opening and push it's way through (gently).
Once the idle jet is cleared, you'll be amazed at how well the bike idles and runs at low speed without having to use the choke, except at cold start of course. |
Willyboy386
| | Posted on Monday, September 20, 2010 - 11:08 am: |
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Oh and don't forget ..check those intake manifold seals for leaks  ...they tend to degrade over time.. |
Buell_bert
| | Posted on Monday, September 20, 2010 - 02:10 pm: |
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If it is the same carb as the 2000-2001 M2's (CV40 Keihin) you would need to remove it but not the float bowl. There may be a cap you will have to remove. Drill a hole in it and put a sheet metal screw in it and grab the end with a vise grip and pull. DO NOT drill to deep, just enough to go thru the cap. If the cap is already off well that is just a plus. Under that will be the idle screw, washer and spring. Remove it, clean it and the port that leads to the intake area. Reinstall parts screwing it in and lightly seating it then back it out 2 1/2 turns. Also what Prior said, you need to adjust the idle screw to allow the throttle plate open enough to siphon the gas up thru the idle port. And of course PLEASE let all of us know how it works out. |
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96 S1 lightning dies when choke is pushed in all the way