Carbs SMH

[Guest]

Ok, I've been trying to get my bike running properly for almost 2-3 months now. I've gone through the carbs numerous time, and even took them into my local bike shop and they said they were clean as a whistle. Now because my stock air box was damaged I said, oh well. Might as well upgrade to pods. Well that didn't go so well. I had the carbs out and in every 10 minutes making adjustments and whatnot with my Sigma 6 stage 3 jet kit. After spending months on that I said ok, I'll go back to stock and bought the same kind of airbox from my friend only to find out that I have to either split the box in half, or take the engine out to get it in. I repaired the old one and got it all in and started it up. It starts up fine with the choke on but as soon as I try to give it gas it starts to sort of wheeze and then dies out and even when warmed up dies with the choke off. Why is it doing this? I'm extremely frustrated with this bike and would just like it to run properly. I'm missing out on too much riding time with all these problems.

[tom203]

This is the 85 700 e right ??, put it in your signature. Yes, this stuff is frustrating, but hang in there. Others will chime in to offer help. Are you sure you couldn't fit the newer stock airbox in once you removed carbs? Is a filter element installed?

[MrMcTavish]

no this is an 85 gs700e. Yeah i really need to put it in my signature. I always forget to put what bike lol.
Yes the filter as in and screwed down tight

[TheCafeKid]

I'm no carb kit expert, but I've never heard of that jet kit company. That may have been your problem with that. Many people fail to realize that the key component in the jet kits are the needles. Not the jets. And the design of those needles are what allow the bike to respond and perform properly with modified intake and exhaust rigs. And that required a good deal of R&D on the part of the major name manufacturers of said kits, which is what you're paying for.
You can't make a GS with stock CV carbs run worth a crap on stock needles, or needles with inadequate taper/adjustability. They're not one size fits all either.

So at the risk of suggesting you spend yet more money, I'd suggest purchasing a kit that is known for working with your bike (ie Dynojet or Factory Pro, etc)
Trying to save a few bucks by purchasing some goofy off brand usually ends in what you're dealing with now, a bunch of headache and a bike that runs like poo..

[MrMcTavish]

Yeah i should have figured that when the price was only $70. But the issue at hand is my carbs are all stock now and I'm back to the stock intake and it's still running like crap

[MisterCinders]

If it needs choke to run, it's probably too lean. Look for air leaks and check your float levels. Then check and adjust your pilot settings to richen the mix if you find no leaks.

[Steve]

I'm still trying to figure out what "SMH" stands for in the title.

.

[MrMcTavish]

Well there are leaks galor in the airbox so I guess I need to drop the motor and put the other good airbox in for it to run good.
And SMH stands for Shake my head. Like "i suck at carbs (shaking my head)

[Steve]

And SMH stands for Shake my head. Like "i suck at carbs (shaking my head)

It's just a few more keystrokes . . . unless your keyboard happens to be missing those keys.

Usually, if it's not clear what is wanted, I will just bypass the question. Using "texting" shortcuts also raises flags for me.

Not that I know everything, but there are probably several instances where I might have been able to make a token contribution.

Thanks for the clarification.

Now that I know what it stands for, I still can't help you on this one, though, I don't know much about jetting, especially the brand that you are using.

.

[TKGS750L]

Carbs

Tavish,

I just installed pod filters on my 750l along with a stage 3 dyno-jet kit which comes with main jets, needles, directions etc. Your running problem is coming from a combo of lack of fuel and too much air, which this kit will remedy both(my cost $125.00). after installment you will need to sync the carbs and adjust the fuel mixture screws(jet kit directions will make suggestions for settings). This should clear up your running problems or if not it will be one thing your certain that is not an issue. Hope this helps TK.

[MrMcTavish]

It's just a few more keystrokes . . . unless your keyboard happens to be missing those keys.

Usually, if it's not clear what is wanted, I will just bypass the question. Using "texting" shortcuts also raises flags for me.

Not that I know everything, but there are probably several instances where I might have been able to make a token contribution.

Thanks for the clarification.

Now that I know what it stands for, I still can't help you on this one, though, I don't know much about jetting, especially the brand that you are using.

.

I'll keep that in mind for further posts.

Tavish,

I just installed pod filters on my 750l along with a stage 3 dyno-jet kit which comes with main jets, needles, directions etc. Your running problem is coming from a combo of lack of fuel and too much air, which this kit will remedy both(my cost $125.00). after installment you will need to sync the carbs and adjust the fuel mixture screws(jet kit directions will make suggestions for settings). This should clear up your running problems or if not it will be one thing your certain that is not an issue. Hope this helps TK.

Yeah, I kinda figured this. My jet kit (Sigma 6) didn't come with adjustable needles, only shims to raise the stock needle. It didn't even come with enough shims. So for anyone out there who is thinking about buying a Sigma 6 jet kit....don't.

I will be pulling the motor after I get back from mexico in a week or so and then I'll go from there. This is the only way to get the stock air box in so I must do this. While the motor is out, I may as well clean the heck out of it.

[TheCafeKid]

I'll keep that in mind for further posts.


Yeah, I kinda figured this. My jet kit (Sigma 6) didn't come with adjustable needles, only shims to raise the stock needle. It didn't even come with enough shims. So for anyone out there who is thinking about buying a Sigma 6 jet kit....don't.

I will be pulling the motor after I get back from mexico in a week or so and then I'll go from there. This is the only way to get the stock air box in so I must do this. While the motor is out, I may as well clean the heck out of it.

That kit may (and I say may because again, I've never even heard of em, let alone used them) be alright for using an aftermarket pipe by itself, but as I said, the stock needles are simply too "fat" and slow of taper to run pods. The additional air warrants a rather quick taper to feed fuel to the needle circuit or the bike will buck and stumble or fall on its face even with as many shims as you can stuff in there. A much much larger main jet can make the needle circuit sort of work, but then the bike will flat out drown on gas in the upper end of the needle and the main circuit throttle openings, so it doesn't really help at all. Plus your fuel economy will be abysmal and you'll quickly foul plugs and build heavy carbon deposits in the combustion chamber...

[TKGS750L]

Tavish,

I understand you feel pulling the engine is right but my question is every time you need to remove the air-box your going to pull the engine? The jet-kit is the way to go believe me.

[TheCafeKid]

Tavish,

I understand you feel pulling the engine is right but my question is every time you need to remove the air-box your going to pull the engine? The jet-kit is the way to go believe me.

Once installed, it should never have to be pulled. It can be serviced in every way inside the frame....

[TKGS750L]

CafeKid

I agree with everything you have posted, but as someone who rides an 81 16v L on a daily, if I do have a problem I need a solution faster then the stock air set-up allows.