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650 running very rich

  • Thread starter Thread starter Gypsyjuggler
  • Start date Start date
It just goes up over the carbs and bends a little to fit into the tube by the fuel line.You put it on first then the fuel line.There is suppose to be a spring thingy that fits over it too.As far as the length you might check www.bikebandit.com it might be one the parts diagram listing.
 
KEITH KRAUSE said:
Did you inherit the "sooty plugs" problem, or did it run fine at one point?
Click to expand...

According to the PO, it ran fine before he turned it over to me. The only problem he had was a leaky petcock, which he replaced with a on/off gravity fed petcock. I'm looking at that as the main problem. With the oddball petcock it ran good, but with bad mileage and sooty plugs.

This last saturday, I pulled the bike out to do an oilchange. I walked the bike out of the garage and then fired it up to loosen up the oil a little. Everything was running fine at this point. I took the bike into the back yard to get it facing out on the driveway and put it on a level section for the work. When I pulled to a stop, I looked down and there was gasoline pouring out from the bike. I couldn't tell where exactly it was coming from, but it must of been from the top area by how it was dripping off the bottom.

I shut the bike down and it stopped leaking. So its not coming from anything I did with the gas tank or petcock. I removed the tank and looked for anything suspect. No luck. I decided to put the bike away for the moment until I could talk with someone about it, leaving the tank and seat off for now. I looked at the main fuel line and it came off the engine with just a little tug.

IS THERE SUPPOSED TO BE A CLAMP ON THE ENGINE END?????

There is no clamp and now I'm wondering if I have the correct size tube on there. The PO had placed an inline fuel filter on this line and I don't know if he used the correct size or not.

I'm hoping the week gets better then this.
 
If the tank and petcock are sealing, then potential leak points would be the fuel line to carb "T" connection, the carb to carb connections, or through the overflow lines. Shouldn't be hard to see where it's leaking with a flashlight. I assume the bowls are all tight?
The fuel line is generally connected with a wire clamp or hose clamp, though the better fuel line, the surgical rubber type, requires no clamping.
 
because you said you never used choke last year, is un heard of for most suzuki's. i do believe the petcockwas problem. if you changed the plugs/oil before you first spin you would know. somtimes we over think a problem from where it started. [if po was honest with you]
 
Right now I'm just waiting to get the free time to go back out and attach the fuel line on the engine end with a clamp. Hopefully this will fix the problem. The current fuel line on the bike is a clear tube, which is helpful in seeing the fuel flow when I primed the engine the first time. The spring that I ordered from BikeBandit.com goes around the fuel tube pretty well, so I think that the tube is the correct size. I'll post more when I get the time to do the work.

Gypsyjuggler
"Juggler"....old gaelic term that means too stupid to get out of the rain.
 
The clear tube is polyurethane and needs no clamp to keep it on.if you try to pull it off it will just get tighter like a chinese finger puzzle.When you take them off you have to push it off the line with a screwdriver.The spring you are talking about goes around the vacumn line that hooks up to the fuel tank.you should have 5'16th's fuel line.
 
Update and new issues with this '82 650L

Update and new issues with this '82 650L

Alright, I finally got it up and running. Unlike last summer, I do need to use the choke to start the bike up now, since I put the OEM petcock on.

How about this one....

After I warm up the bike and get it on the road for a few miles or so. (maybe about 5 minutes or so) When I'm slowing down to stop at an intersection, the bike will stall out and won't fire back up unless I open the choke all the way and actually put the petcock on "Prime" After I get running again, I switch it back to "Run" and it goes ok till I slow down at an another intersection.

I actually had to keep the choke open slightly to keep it from stalling out in the mean time.

So it seems that at low speed the engine is not getting enough fuel to keep running.

Anyone got any ideas on this one?

Gypsyjuggler
 
Did you use 5/16 fuel hose? Make sure the two hoses that drop behind your airbox from between your carbs are not obstructed and you can blow into them with no resistance. (Float bowl vent tubes)
 
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