powernurse
Forum Newbie
My 1982 GS450T is once again on the road after sleeping in a barn for 20+ years. It is mostly running well, but I am experiencing the "hanging idle" problem. Bike has the original Mikuni BS45 carbs, which were disassembled, cleaned, and reassembled. At the time, I could not remove one of the pilot screws without destroying it, and I had no replacements; so only one was removed so that I could clean the passage, and then replaced. That one had no spring, washer, or O-ring, but plenty of carbon deposits. The pilot screws are about 2 turns out. The intake boots were in good shape, so I kept them and replaced the O-rings that sit between the boots and the engine. Bike has the original airbox, which seals well around the carb intakes. New hose clamps all the way around. New crankcase ventilation hose to the airbox.
Throttle response is good, with no hesitation, but sometimes, the RPMs don't drop off immediately upon rolling off the throttle. I presume this is because the idle circuit is getting too much air, and I would replace the pilot screws if I could find suitable replacements - any ideas on that?
Perhaps unrelated: the bike runs well when it is standing straight up, but once I lean it over onto the kickstand, the engine stumbles and eventually dies. This must be a fuel-delivery issue, with the uphill carb not getting enough fuel - agree? Is that normal? New fuel lines, aftermarket petcock, original T-connector, no leaks.
I may be premature in posting this, because as I run the bike more, it seems to be running better. At first, the bike was running mostly on one cylinder; the #2 cylinder (on the right when sitting on the bike) remained cold until the RPMs increased, when it would finally begin heating up and producing power.
I appreciate your collective expertise, and value your responses.
Throttle response is good, with no hesitation, but sometimes, the RPMs don't drop off immediately upon rolling off the throttle. I presume this is because the idle circuit is getting too much air, and I would replace the pilot screws if I could find suitable replacements - any ideas on that?
Perhaps unrelated: the bike runs well when it is standing straight up, but once I lean it over onto the kickstand, the engine stumbles and eventually dies. This must be a fuel-delivery issue, with the uphill carb not getting enough fuel - agree? Is that normal? New fuel lines, aftermarket petcock, original T-connector, no leaks.
I may be premature in posting this, because as I run the bike more, it seems to be running better. At first, the bike was running mostly on one cylinder; the #2 cylinder (on the right when sitting on the bike) remained cold until the RPMs increased, when it would finally begin heating up and producing power.
I appreciate your collective expertise, and value your responses.
