Ok, I put the bike away last night and this morning I went to fire it up and noticed the smell of gas. I look down and the switch was on prime. I leaked about a gallon onto the floor. I then proceeded to take the plugs out and crank the starter, gas flew out like the bike was a squirt gun. I burned the plugs off and put them back in. I tried to start it and it just cranked and cranked. My guess is that there is still a great deal of gas in the cylinders so I have the plugs out so it can air out....does it sound like im on the right track? is there anyway I can speed up the process? Thanks....I'm new to all this stuff
Once you get the bike running, it would be wise to change the oil and filter.
All the gas running down the cylinders probably thinned it out a good deal.
You did set the fuel valve back to on right?
All I can say is to let it air out a bit, maybe with the plugs out of it, crank it over some with the throttle held open, just to try to flush some of the excess gas in the carbs out.
However, I think some people with the problem you are having wind up having some other carb problem like stuck floats or something after finding a huge puddle of gas on the floor.
Also. check the tank.. make sure you still have gas left in it.
Other people may be of more advice than I would be to proceed further.
Yeah I have the valve back on the "on" position. I think im going to need to rebuild the carb sometime soon, but the bike should start....I'm hoping once the cylinders dry out. Thanks for the help.....I would also appreciate any other ideas or comments.
Try cranking with the throttle open. This has worked for me before, but will not fix the problem that caused it to flood to begin with.
you mean crank at full throttle with the plugs out....right?
Any time you think you've flooded, bike tip over, choke too high to start etc, crank it with the throttle WFO (no choke), no need to remove the plugs if it's not too bad. Provided you have enough juice in the battery, it'll clear out and start to fire when the mix in the chamber gets just about right.
I'll give it a try it a bit here and see how it turns out..
I just tried cranking it with no luck, I pulled the plugs with the wires still attached and noticed that I wasn't getting any spark. I have the plugs gapped at .8mm....anyone have any ideas?
its not enough to have the wires attached, the plug still needs to contact the engine to complete the circuit. The engine is the ground for the sparkplugs, try it again and hold the plug (w/ wires connected) with the metal ring (that normally rests on the cylinder head) on the engine and see if you get a spark. Whenever I've flooded, I just take out the plugs crank it a few times to get the excess gas out of the cylinders (like you said comes flyin out) and then put the plugs back in.. give it throttle while you start and voila.
Just a reminder...make sure you're well ventilated while dealing with gas and spark.
im letting the bike set out in the sun for awhile to get it warm...then im going to give it another shot....I dont want to keep cranking and cranking and end up burning up the starter
Ok, heres what im doing. I turn the choke off and start to crank the bike without any throttle after a few seconds I kick the throttle back to full the the bike jumps up to 1k rpms...sounding like it wants to start but dies down and does not go any higher (I have the bike jumped off of a car battery) any other ideas??
is there any gas left?
Theres gas left, I check the plugs and im getting spark, after I crank for awhile gas starts to leak out of the muffler. I checked the oil and it as as thin as gas. im going to go grab some more oil and change it....i doubt the oil would have to do with it starting or would it?? I'm going to go change it now....I'll be back in a bit
I changed the oil and she fired up. Theres tons of smoke coming out of the exhaust. I had it runnin for like 2 min and it was like a smoke bomb going off. I decided to shut it down to give it a rest....the smoking is just the oil and gas in the cyl. burning off right?
Quote from: frankman20I changed the oil and she fired up. Theres tons of smoke coming out of the exhaust. I had it runnin for like 2 min and it was like a smoke bomb going off. I decided to shut it down to give it a rest....the smoking is just the oil and gas in the cyl. burning off right?
...and probably a lot of the gas/oil that got in the muffler
Glad to hear she's running
which way do you turn the idle adjustment knob to increase the idle? Thanks in advance
Quote from: frankman20which way do you turn the idle adjustment knob to increase the idle? Thanks in advance
Since the knob is "upside down" it can get confusing if someone says to turn it clockwise or counterclockwise.
To increase the idle, use the same motion you would use to tighten a regular screw or a jar lid. It might help if you close your eyes and let your hand just DO it.
PS - If you get it wrong and the idle
decreases ... um ... turn it the other way. :mrgreen:
I got this bike running somewhat. Whenever I get to roughly 5-6k the bike looses power, the pitch of the engine becomes much lower and sometimes it even kicks the rpms down like its gonna die. I put 6 quarts of oil in the case...It looks full on the dipstick, but its hard to tell...did I put too much in. Also my battery is pretty low on charge...would this have anything to do with the power loss occurring around 5k?? Thanks a lot....
6 QUARTS????!!!!! Thats a lot. Should only put in ~3 when you change the oil... Drain 3 quarts.
ok ill get 3 quarts of oil out, anyone have any idea why im loosing power around 5k
anyone???, I just pulled my plugs and they were pretty damn black...
im going to try to turn the idle air screws in a little to see if that helps. It seems im runnin to rich and bogging the motor down.
Still losing power with the extra 3 quarts out?
yeah...I think I'm runnin way too rich..
im about ready to push this thing off a cliff...it doesnt want to idle and its runnin rich....now I can even hear a popping when it studders...I need a quick fix for this thing
(http://www.gstwin.com/images/mods/rejet/4.jpg)
Is the idle air screw item #1 in the picture above....thanks (hopefully a turn in or two will help to end my rich combustion)[/img]
Yep, that's the one!
(http://www.bbburma.net/MiscFotos/DSCF2431_Idle_Drain_Mixture_Screws.jpg)
great....looks like im going to have to drill them out
omg, I think im going to go insane....I go to start the bike this morning and it just cranks and backfires..bang!..wtf is going on now??
Quote from: frankman20great....looks like im going to have to drill them out
That pic you posted ... upside down and apart on the news paper... the brass caps on the mix screws seem to be drilled out...
Cool.
Srinath.
He lifted that pic from JeffD's Rejetting (http://www.gstwin.com/rejet.htm) tutorial on the GStwin.com GS500 Modifications Page (http://www.gstwin.com/gs_mods.htm).
sounds like the same problem i'm havin, i got fed up when we tried to get it runnin and all it did was backfire, i took it to the shop, threw them the key and said fix it, i obviosly can't.
I wanted to get it to run by myself but there was no way i was gonna get it.
Good luck
Derek
I knew nearly nothing about engines two weeks ago, but I've been working on my new gs500 to do some troubleshooting of a very similar problem.
When I checked my plugs they were coated thick in carbon which caused them to produce weak sparks leading to incomplete combustion. Combustible gas exits to the exhaust and you get a backfire. Try replacing the plugs, or at least see what kind of spark you are getting from your existing plugs. Mine were giving weak orange sparks. I am a newbie diagnostician, but the comment on black plugs and backfire rang a bell.
Matt