Suzuki 2 Strokes

Hey so I finally got everything hooked up correctly(I believe) battery is fully charged and connected and the voltage said it was about 12.43. I am using a motion pro IV line for now while tank is being painted. Problem is I turn the fuel on from the bottle and plugs get spark but its not starting. It sounds like it wants to start but it still doesn't. Could it be a ground or possibly the timing??

Yes. Give us a clue what it is doing or not doing.
It could be carbs, timing or maybe something else entirely.
Have you checked timing, stripped and cleaned carbs, farted about with things in general or caused upset to your parents?
Oh, yes, what bike is it FFS? Still the 380? WTF is a motion pro IV line?
Why not just use a plastic bottle to the carbs?
Anyway, how have you checked/set the points?
Have you stripped/cleaned the carbs/tank.
Are you useing new fuel?

Motion Pro IV is a plastic bottle to feed the carbs....

First off check timing and are the carbs 110% clean and properly adjusted?

the motion pro fuel bottle for synchronizing the carbs. What I just did was sprayed starting fluid into the airbox boot and it does fire but im still not getting fuel. Also the left cylinder is not firing because its colder feeling then the center or right cyl. And yes its a 75 gt380. Im not sure if that vacuum tube going to the carb may affect the fuel getting into the carbs or the jets. The fuel is also brand new and oil pump is working fine I believe.

I cleaned the carbs and replaced the jets with a new jet kit for the 380 carbs. They are clean and what I did is take wd40 and spray through all of the jets and fuel openings. Also adjusted float level according to the Clymer manual.

Jets in jet kits are typically not stock sizes despite what they are marked and needles are rarely correct either, but they should be OK to start with. The vacuum hose must be blocked off to run properly. My Motion Pro auxiliary fuel tank didn't come with a shut off so I had to add one. Is yours opening and flowing OK - mine works at 90 degrees to flow and is closed with the lever in line with the fuel hose - not what I expected.

Did you check that the tank is flowing OK?

I don't think its flowing in there from the bottle. I have it hanging on the handlebars. Not completely sure if it needs to hang higher?

Mine runs fine with it hung over the bar with as little as 1/2" of fuel in the bottom. Are you sure that it's flowing out of the bottle? Hang the bottle up higher and drain it into another gas can to check.

Sounds like a fuelling problem to me, although 12.43 volts (80%) charge is a little low to start a bike that's been stood for a while.
Battery should be something like 12.70 volts.

I would think if the fuel flows enough to fill the carb bowls, the engine would at least start, and run for a minute or so on the gas in the bowls. At least, that's what happens when I forget to turn on my manual fuel petcock on my T500. (Yeah, done that before. )

Brings us back to a proper fuel/air mixture, and spark at the proper time.

Foolish question - Are the spark plug leads on the correct cylinders? (Yeah, done that before, too. )

Ya that's what I thought too about the battery. Needs to be 12.7 problem is the little amount of time it runs its not charging. Spark plug leads are correct I believe and as far as left cylinder not firing I assume that's a timing issue? Im just worried about the center piston seizing also (from what ive been told they were known for that).

Well Ill keep playing with it today otherwise my local Suzuki dealer might be able to check it out as I am not a pro mechanic(lol). Ill keep you guys posted and see what I can do.

do not take it to a shop. they know dick about vintage bikes and evenless about tripple 2 strokes. you will pay 50-75 an hr for them to reiterate what you already told them. just keep trying to fix it your self. post vids, that gives the most accurate description. we can see and hear what its doing. all the guys here have been doing this for years. alot of them got their first bikes from the factory so they know what they are doing and its free. post a vid and describe the exact problem in the video. i spent along time trying to get my bike running. guess after guess led to taking it to a shop. they did nothing and it cost me 150. i eventually found a little group of guys here in oregon that collect and work on these bikes. they helped me figure these out and we found out that my motor was in need of a full rebuild.

my point is, just keep trying. do your best to communicate to the forum what the issue is and keep youtubing and googleing. you will eventually figure out what the issue is. a shop is where you take your harley (aka a "me too" bike) or your crotch rocket. a vintage 2 stroke is a bike you figure out yourself. good luck. if you post a vid i can post an answer vid to the best of my ability. i am working out of town but am also working with eric kalamajabajaba (or what ever his name is) on building a modern tr750 tribute bike. i will be breaking my bike down and can do a video before its not running any more to show you what ever you may need. again the better vid you take the better answer we can give.

Ya I know....im still impressed I got it to at least crank up and this is my first motor rebuild I have EVER done So I went to check everything again on the bike. What I did was took a ladder and hung the bottle up higher and I believe fuel was overflowing out of the right carb. The other two I don't think got fuel and im not sure if its the float or something else??

Could be timing or fuel or....So let's break it down in a logical way and start with the fuel issue. You mention a leak out of the right carb. Strip that and check the float valve and float level. remember that pictures of a crab upside down are wrong - or at least misleading. Tilt the carb until the tang on the floats just touches the float needle and doesn't compress the spring loaded pin.

Next: Pull the left and center float bowls off and see if there;s fuel in there. If not, let's figure out why. Is it blockage or a sticky float or teh float valve all gummed up?

When you know that all 3 carbs are getting fuel and not flooding, move to check timing on all 3 plugs. Check all three plug caps too while you are there and fit new plugs if they aren't new and dry.

Another thing is that freshly built motors ALWAYS take longer to start than one that has run recently. OK so there are exceptions, but in general it takes more cranking on a fresh motor.

Ya its gotta be a fuel issue because I think its just burning the 2 stroke oil(im not sure if that's bad but I assume it is). So ill start with the carbs. I really hate to pull them off but I guess I will have to. As far as the left cylinder not firing goes I adjusted the plate so many times and still doesn't work. The coils spark all plugs so im not totally sure.