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1982 GS650GL Carb Question

  • Thread starter Thread starter white94cam
  • Start date Start date
I'll re-test the tank today - I'm not sure I had enough fuel in it yesterday when I tested it.

Also, I ordered the sliders from my local dealer. $4.XX for both and I can pick them up when they arrive.
 
Re-tested the tank today. Didn't use enough fuel yesterday I don't think. Petcock is operational. There is no fuel flow when petcock is ON without vaccum, fuel flows nicely when ON with vacuum. Fuel dribbles slow on PRI. Good to go, O-rings should be here tomorrow.
 
white94cam said:
... There is no fuel flow when petcock is ON without vaccum, fuel flows nicely when ON with vacuum. Fuel dribbles slow on PRI.
Click to expand...
Fuel should flow nicely in PR (as good/better as ON with vacuum )- pickup is at very bottom of tank where sediment is likely to settle.
 
O-rings have arrived. What is the best way to remove the carbs from this bike? Disconnect the "middle" airbox from the carbs first, or disconnect the intake boots first? etc. I'm sure there is a recommendation for the removal sequence?
 
No matter what you disconnect first, you will need to loosen airfilter box from its moorings so you can slide it back ( push aside/remove anything that prevents this, like wires). One half of inch would be nice, but it ain't there.
 
Carbs have been removed, dipped, and partially reassembled. Need some new float bowl gaskets - where from? Z1?
 
Rebuilt carbs are installed. Rode the bike today for the first time. It is running a bit rich, and fuel spills out the airbox vent tube. The petcock appears to be leaking in the "ON" setting. I don't see any gas coming out of the vents in between the outer carbs. Thoughts?

Edit: I also need some spark plug caps (?) that connect the wire to the plug. Also need plugs, valve cover gasket, and a header/exhaust manifold bolt. What plugs should I get? Also need to know where (Z1 I guess?). Thanks!
 
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I'll assume you meant fuel was leaking out of airbox drain (not vent) tube. This means that fuel is getting by needle float seats- did you leave petcock on "PR" spot? If No, then the leaking in "ON" means your float height is wrong, or your seats are no good . (you said prevously that you tested petcock, right ???). Correct the problem as fuel is likely finding its way to crankcase oil.
 
tom203 said:
I'll assume you meant fuel was leaking out of airbox drain (not vent) tube. This means that fuel is getting by needle float seats- did you leave petcock on "PR" spot? If No, then the leaking in "ON" means your float height is wrong, or your seats are no good . (you said prevously that you tested petcock, right ???). Correct the problem as fuel is likely finding its way to crankcase oil.
Click to expand...

Yes, the airbox drain, sorry for the confusion. The tank was in the ON position. If the float height and/or seats were the problem, wouldn't the carbs leak from the two vents (in between the carb bodies) rather than the airbox vent? I tested the petcock previously and it seemed to work fine, but yesterday gas was leaking out in the ON position.
 
white94cam said:
Yes, the airbox drain, sorry for the confusion. The tank was in the ON position. If the float height and/or seats were the problem, wouldn't the carbs leak from the two vents (in between the carb bodies) rather than the airbox vent? I tested the petcock previously and it seemed to work fine, but yesterday gas was leaking out in the ON position.
Click to expand...

Fuel will leak out in carb throat thru main and idle holes before it reaches top of bowl and vents. If vacuum petcock is in "ON" spot (and bike isn't running) any fuel flow to carbs means your petcock ain't right- this is independent of whether you have good or bad needle seats.
 
Found a bad needle valve, now I need to order a new one. I also need ONE new o-ring for the needle valve seat. I don't want to have to buy an entire set from cycleorings again, if possible. Does an OEM needle/seat come with the o-ring?
 
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