Hi All,
I have a 1994 GS500 with about 9800 miles on it. Last summer (2006) the bike started having stalling problems.
Over the winter, I removed the carbs and cleaned them. I also went to the local gas station and blew air through
them. After putting the carbs back together and installing them on the bike, the bike is doing the same thing it
was doing before I removed the carbs. I've made sure all the hoses are connected backup right.
When I start the bike, it will run on choke and idle high. Once the bike is taken off choke and I twist the throttle,
it will bog down and shut off. I went to the bike shop and bought some new plugs and gapped them according
to specs. For some reason the problem still exists. I've tried leaving the choke on and allowing it to idle high and
then placing it in gear to slowly let the clutch out to see if it will pull. The moment a tiny bit of throttle is given,
it shuts off.
Lastly, thinking that it may need some gas to circulate through the system, I let the bike idle for about 15 minutes.
Sometime the bike would surge up to the high rpms then back down. Once I got this settled a bit by adjusting
the idle screw, the engine will run on choke. The moment I give it any throttle, it bogs back down.
I'm stumped with this one.
Every thing on the bike is original. It was running fine until the problem crept in and since last summer it hasn't
been right. I've even made sure the battery has a full charge.
Would a few of you give me some suggestions. I would really appreciate getting this bike back up and running
before the summer is completly gone.
Thanks,
GS4Ever
I would say the petcock is not getting vacumme or the diaphram is bad.There's a thread on modifying the petcock and eliminating the vacumme.You get to keep your reserve.I can't find the thread on the mod.
http://gstwins.com/gsboard/index.php?topic=19363.0
Is this the thread you're talking about?
Try setting the petcock to Prime and see if you still have the problem. If not, the petcock is most likely your problem.
Quote from: VSG on July 24, 2007, 12:11:21 PM
http://gstwins.com/gsboard/index.php?topic=19363.0
Is this the thread you're talking about?
Try setting the petcock to Prime and see if you still have the problem. If not, the petcock is most likely your problem.
Thanks VSG.I was searching for petcock mod/modification.It just didn't pick it up.Plus the title is diff also.
I forgot to mention setting the pet on prime.I just had woke up and wasn't thinking str8.
Thanks, my fellow GSers. I'll try this out over the weekend.
Hi Fellow GS riders, O0
Just a follow up on my problems with the engine stalling when giving it throttle. As you know I had cleaned the carbs and replaced them after the problem originally began. For some reason this didn't solve the issue. Still stalled. I then looked at the petcock and the fuel flowed okay also. What could be the problem? Frustrated, I just let the bike sit the rest of the summer. A friend of mine told me to stop pass Baltimore Cycle Salvage (410) 962-1335 to see if they had any parts like petcocks and carbarators. Of course after telling the owner there of my problems, he said bring in the carbs and the tank with the petcock and he'd take a look at it. So, I dropped past with my parts and he broke my carbs down right there in front of me and said this is the problem. The needle inside of the diaphram was not dropping back down in the hole when the carbs would open when I would give it gas. Yes, the two little plastic pieces that drop down in the diaphram had been re-assemble wrong. A simple mistake he said as he put it back together properly and informing me confidently that it would work betting a nickle to the dollar. I was almost embarrased to ask how much this was going to cost me. He said just give me $20 dollars. For this service, he also checked my fuel tank, tested my petcock and made sure the main jets were unclogged by cleaning them again. If I would have carried it to the dealer (which I was trying to avoid) this would have cost me $400 dollars.
Later that evening I managed to get everthing back together on the bike. The moment of truth was upon me. I then started it up and of course let it idle for a little while before giving it throttle. Low and behold the bike idled up and came backdown perfectly just as the guy said it would. Because this is the first real service my bike has had since I brought it some 12 years ago I kinda forgot how it felt to have a perfectly tuned (new spark plug, clean carbed...) bike. I took it slow the first few miles and then got on an open stretch of road, stamped down the gear box 2 gears and WOW!!! :icon_razz: The torque on the bike set me back on the seat. I had to lean forward just to keep the front wheel from coming up off the ground. My old girl actually scared me! :o This is not the same bike I've been riding. It's amazing what a carb cleaning and tune up can do.
I don't usually make recommendations but Baltimore Cycle Salvage (410) 962-1335 has just about anything you could need part wise for any motorcycle. I was afraid that if I did need parts, I would have to go out to the dealer and buy them. Nope, the guy even replaced my O-Rings. Another man's junk is another man's treasure. These guys really know motorcycles and how to fix them. They know what goes where without even looking at a manual. They know what parts will also work as substitutes. So, if there is anything you need for any motorcycle concerning parts, try these guys. They can fix it so that it's only a fraction of the cost even including advice on how to fix your bike.
Take care and ride safe,
GS4Ever :thumb: