Squeak when starting. Totally confused. Please help

[thebigtuna]

So I went to start my bike after it had been sitting outside for about a day and a half through a few rain storms. I recently got it back from a shop after they synced and rebuilt the carbs because I don't have the time or space to do it. So I anxiously went out to ride today only to find it would not start at all. When I engaged the choke to start it, it ran for about a minute then died. So I tried again and when the choke was engaged and clutch pulled in it refused to start but there was an almost squeak that went every time it was trying to start. The squeak only went away if I gave it a tiny bit of throttle. Anyone know what this could be? Also if this helps I tried to start it in first and even with the clutch all the way in, the bike was pulling forward and not just a little bit. Like actually pulling me forward. Any help is much appreciated. I'm at a lost and getting really tired of having to fix this bike. The PO really screwed it up more than I thought when I bought it

[The Buddha]

During the synch process they installed a mouse in the carb ...

Seriously man, I smell a rat.

Cool.
Buddha.

[adidasguy]

Start in neutral. Sticky clutch plates are causing the lurch forward. Also it puts lots of stress on the starter motor and starter parts.
Once the bike is running, oil circulates around the clutch plates and they free up right away.
So best advice is NEVER start in gear unless the engine is hot.

[rexpepper651]

i had this problem once. it wouldnt even start in neutral. i actually took the clutch plates out and cleaned them in kerosene. re-installed them and it started up just fine. i didnt have the squeak tho.

[adidasguy]

i had this problem once. it wouldnt even start in neutral. i actually took the clutch plates out and cleaned them in kerosene. re-installed them and it started up just fine. i didnt have the squeak tho.

When in neutral, the clutch and drive train is disengaged from the motor. You must have had some other issue or a false neutral. When in neutral, you can freely turn  the rear wheel (on the center stand) and roll the bike around without holding in the clutch lever.

[Janx101]

video/audio of squeak? ...

if not .. or cant do it... (and this wont mean i can say what the hell it is... but others might) ... what kind of squeak? ...

like a short 'pip.... pip ... pip" ... or a single pip!?

a or a "reeeep .. reeep" etc? ..

or a "squeeeeeeee" ? etc

or .. your best phonetic interpretation of the noise?

...

plus ...

When I engaged the choke to start it, it ran for about a minute then died. So I tried again and when the choke was engaged and clutch pulled in it refused to start but there was an almost squeak that went every time it was trying to start. The squeak only went away if I gave it a tiny bit of throttle.

errr .. how much fuel is in the tank? ... does "it look like theres plenty cos i can see it about halfway down" ??  .. coughcough reserve level! cough cough

... so as the engine nearly fired up/started running the squeak stopped entirely? .... bad vacuum line perhaps? ... or something tight in valves with no oil pressure till running?

... so throttle when it was actually running? .. or still trying to turn over? ... as far as i (very basically) understand... throttle moves slides which then moves .. something?... needles and floats?... or other way around? (carb guys?) .. but .. missing squeak when change throttle... makes me think .. o-ring leak or airflow block/leak around the slides??... you move the throttle and it instantly changes/moves the problem?

.....or .. your squeak is a metal to metal rub somewhere around/near the front frame... (fuel tank on frame or fairing panel or similar) .. and it just happens to squeak while bike is vibrating while starting... change that vibration frequency a tiny bit and the rub noise either goes beyond hearing or stops?

i dont mean to blather on.... i just like to try and think my way around/through issues and try to isolate/imagine where the noise may occur? 

[thebigtuna]

Okay now that I'm off work let's see if I can describe this. I put the bike up on the center stand and the back tire seems to roll pretty much free. When in neutral and trying to start the bike doesn't lurch at all. I got a video of the sound, the best one I could, of the sound which only happens trying to start with the choke on. Without it doesn't make the sound and if I turn the throttle at all while trying to start with the choke on the sound goes away. The main problem isn't the lurching I was just curious as to why that was happening. I replaced the spark plugs not long ago so that's not the issue. Maybe something with the air filter. The crappy uni one I had fell apart by the bottom metal piece coming loose but I stuck it back together with adhesive as a quick fix till I can get a new air filter. I've located the sound and it's like it's coming from the tank. I have about 3/4 to 1/2 of a tank of gas in there. Could water have gotten down into the gas? Thanks for all the help I'm still new at this.

It said the file was too big to upload. It's a video from my phone any ideas how to get it on here?

[robfriedenberger]

Upload your video to YouTube and post a link, but check your choke cable is attached to the carb


Sent from my iPhone using Tapatalk

[Janx101]

mrrrm..... fuel level.... you may know the gs500 tank by now... but what the vast majority of people would call 1/2 a tank... is only just above reserve.... its deceptive!!!! ... 3/4 is more like maybe an inch under the bottom of filler neck? ..

if you looking in there and can see that silver hump exposed somewhat ... thats well below half!! .. more like between 1/3 to 1/4 .. and 1/4 is pretty much reserve!

[thebigtuna]

http://www.youtube.com/watch?v=WyuuJGvpy1I. That's the YouTube link. I checked the choke cable and it seemed fine. Didn't seem to have any trouble contracting and relaxing when I put the choke on and took it off. I've only just filled it up not log ago and haven't driven much at all. Would be an easy test to see if I just needed gas if someone at my apartment complex didn't steal my apparently not hidden well enough gas container lol

[thebigtuna]

Yeah pretty confident there is only about a gallon missing. There is a rod shooting up from the top to the bottom of the tank that I can see and it's not halfway down on it.

[robfriedenberger]

 

Dose not sound good to me, sounds like some thing internal in the motor isn't well.
Before you do any thing else get a compression tester, record your results. Than put a table spoon of oil in each cylinder and try again. If you have been trying to start a ton you have have cylinder wash thus causeing your noise.

Post the results of the compression test.

If the noise gos away pull a plug and ground the body of the plug to the motor and check for spark on both sides if good than you know its a fuel issue, check with starter fluid.

[Badot]

Dose not sound good to me, sounds like some thing internal in the motor isn't well.

Sounds like someone put a turkey call in the intake. You said it only makes that noise with the choke on, and without significant throttle? I'd imagine that would indicate a carburetor issue, if I had to guess maybe a torn vacuum diaphragm based on the noise.

[adidasguy]

I would guess a stuck or broken valve.  Maybe broken valve spring.
It sounds like a valve is closed and it is sucking in air, pulling the valve open to doit.

Remove the valve cover and check your valve clearances.
Also remove carbs and exhaust. Look into the exhaust ports and intake ports for anything funky.

[Janx101]

I know the bike needs to be fixed.... But... You could sell it to the duck dynasty guys!!! .... Bike with built in duck/turkey call?! .. 

[thebigtuna]

Haha the sound isn't that loud when you are there. Guess I just put the phone right where it was so it was louder. It is actually more of a squeak. That whole valve adjustment seems a bit over my head. Is it that hard. I'm somewhat mechanically inclined and I was a good walk through video by baltimoregs on YouTube. Are those tools he used and shims expensive? Also any idea how much it would cost at a shop if necessary. I'll see about getting a compression tester or whatever it's called either today or the coming days and post those results

[thebigtuna]

Okay update. I started to tinker and took off the tank and air box to check the vacuum lines to make sure they weren't blocked. While the tank and air box were off I tried to start it to see and it deemed to go then died I assume because of lack of gas. That mean it's a fuel problem/petcock/ maybe air filter?

[Janx101]

With tank off and full bowls.  Idling only,  mine runs 30 -40 seconds IIRC?

sent by willpower and a phone

[Janx101]

Bloody tapatalk no edit,  ... with no airbox or filter it'll run funny though... changes the mixture rate

sent by willpower and a phone

[jacob92icu]

I would check to make sure, like someone had said earlier, that you dont have any rips, tears, or holes in any of your carb boots.

That nose does not sound good at all. Absolutely worst case scenario in my opinion is a burnt piston rod with bad bearings turning around and around while you are turning the motor over making that disturbing noise. However, I would check the carb boots first.

Some information that I think would make solving this problem easier would how long have you had the bike? Also did it run well and without the turkey noise before you took it into the shop to have them sync the carbs and what not? That would tell us that the problem is not that serious. In any case, I would not keep trying and trying to turn it over right now until you actually try some new things, because it is definitely not going to start like that.