2007 Suzuki GS500F WTF

rharding91 · February 02, 2013, 11:59:01 PM

Quote from: Badot on February 02, 2013, 11:20:21 PM
GS500s actually have something called an enrichener... it gives the bike both more air and more gas, with some extra gas on top of that since the mixture needs to be richer when the engine is cold.

Choke has become a pretty general term for any carb function that helps an engine start cold, but real choked engines usually can't run properly above idle until the choke is turned off, so they're not too popular anymore except on very simple engines/carbs.

Regardless, it's normal to have to use it when you're starting cold, especially with stock jetting, although if it's 70 degrees you should at least hear it puttering trying to start without choke.
Is it running at 1500 RPM when the choke is on when the engine is warm? If so, one of your cylinders is probably not firing.

Uploading another video as we speak showing whats going on now. It does start without the choke on but dies immediately and also if I give some gas to try and keep running WITHOUT the choke on it dies immediately.

Now when I turn the choke on all the way it allows me to give it some gas and keep it running and actually sounds really good, but as soon as I let off it dies.

What I want to happen is no choke and a nice idle haha. What do I need to do to make that happen?

http://tinypic.com/r/r0qo8l/6

adidasguy · February 03, 2013, 01:00:48 AM

Just to get all the correct information on the table.....
It only adds gas, Doesn't affect the air. Makes it richer.

Badot · February 03, 2013, 07:55:13 PM

Quote from: adidasguy on February 03, 2013, 01:00:48 AM
Just to get all the correct information on the table.....
It only adds gas, Doesn't affect the air. Makes it richer.

It adds air. It even shows air being added in the picture you posted.

The extra air flows in from the underside of the slide diaphragm as well as a slight amount from the inside of the float bowl.

Janx101 · February 04, 2013, 02:20:10 AM

Seat and popcorn time!!

bombsquad83 · February 05, 2013, 01:05:51 PM

It adds a fuel/air mixture (since the starter circuit includes a fuel jet and an air jet), and it does richen the mixture overall.

One thing to check is that the starter fuel jet (number 3 in the diagram) is not clogged. These get easily clogged since they sit at the bottom of the float bowl. Clean out the pilot and main jets while you have the float bowl off. You might also consider cleaning the small fuel/air passage that the idle mixture screw comes in and out of.

After a good cleaning, adjust the idle screw and mixture screws (3 turns out on the mixture screws is a good starting point). Once you get it running and nice and warm you can fine tune those.

I would also suggest checking the float heights with a clear tube from the carb drain. There are many threads here on how to do this. The gas level should be even with the float bowl gasket. If it's not, get back to us for next steps from there.

rharding91 · February 08, 2013, 09:27:44 PM

Had a guy come over who "used to be a mechanic" and he thinks it is the petcock. How would I diagnose this before going crazy and buying one?

adidasguy · February 08, 2013, 10:37:04 PM

Put it on PRIME. That, in essence, bypasses it and there is a direct flow of fuel from the tank to the carbs.

rharding91 · February 23, 2013, 04:21:31 PM

Well it had nothing to do with the petcock so I took off the carbs and looked at them again and voila. Seems I switched the mid-main and main around on the carburetor. DOH! haha well now I am having a hanging idle. What could it be... Any ideas?

View My Video

bombsquad83 · February 23, 2013, 06:13:14 PM

Most likely you just need to turn down the idle speed. Let it get completely warm before you set the idle speed. It will need choke until it's warm to maintain idle.

rharding91 · February 23, 2013, 08:08:27 PM

Turns out my throttle cable was too tight running perfect now

Janx101 · February 24, 2013, 02:38:31 AM

rharding91 · February 24, 2013, 09:56:41 AM

Well I seem to have misplaced all my fairing bolts and hardware to mount my headlight over the 2 months this bike has been sitting.. well damn

Janx101 · February 24, 2013, 04:02:49 PM

over there.. in the drawer.. left front side.... yes that drawer! .. the one you looked at to start with and said "nope i wouldnt have put them there! that'd be silly" ...

rharding91 · February 25, 2013, 05:24:03 PM

Cant find any of those damn bolts anywhere. Interesting enough I took it out to a lot to let my girlfriend ride it around, and the damn oil light still comes on whenever the bike is at a stop.

Janx101 · February 25, 2013, 05:27:16 PM

crud in the pressure switch?

adidasguy · February 25, 2013, 05:33:22 PM

Oil light = low oil pressure.
Could be dirty oil filter. Or crud on the sump filter screen.
Lastly, possible the oil pump is bad but those things are all hardened steel so I don't know how one would go bad unless there was grit in the oil and by then your engine would have been destroyed.

rharding91 · February 25, 2013, 05:40:00 PM

brand new oil filter, and i cleaned out that metal mesh screen. but then again there was so much shaZam! in my bike it could already be filled up again maybe a oil change and filter change will do the trick.

News:

2007 Suzuki GS500F WTF