I've been searching all over the web and it seems like this is probably the best place to ask about my problem.
I've got a 1983 GS750E with around 30K miles and I can't figure out why it only seems to run when the choke is fully out. At first, I thought it was the carbs, so they got completely cleaned and rebuilt with new jets, new float valve/pin, new pilot screws, springs, washers, O-rings, etc. The pilot screws are set to 2 1/4" turns out from lightly bottoming them out.
The bike still has the exact same problem.. It will only start/run with the choke out.. I can get the motor to idle if I turn the pilot screws out to around 4 turns, but if I give it any throttle, it just stalls right out.
I also adjusted the valves to .004-.005" like the service manual suggested. The plugs are also new so they are not fowled.
I know the carbs and fuel system are fine and they can't be the problem so I'm wondering what else could give the following symptoms:
Only starts/runs with choke out
Stalls as soon as the throttle is opened.
Will idle if pilot screws are 4+ turns out but will stall if throttle is opened.
The valve clearance is .004-.005
The plugs are clean (new)
Stock air box
Stock jetting
Could any of the following issues be causing this?
-I have not checked the carb boots in between the carb and the engine yet.
-I have not checked the ignition module/system yet.
-I have spark on all 4 cyls, and the engine sounds good when running on full choke.
-I have not checked the coils.
-I have not checked the battery.
-I have not checked the regulator.
Any ideas guys? I'm puzzled...
TIA!
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