Think this is my problem

[Sycotravis]

I got my bike back on Monday from getting carbs cleaned and jetted she runs beautiful now but only in city and on highway up to about 60/65 at full throttle the bike breaks up and stalls as if not enough fuel...

The idiot removed my reserve fuel line and blocked it off said there'd were too many fuel lines I did have brand new lines ran just as factory could this possibly be my problem. Thanks in advance


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[Atesz792]

Go back and demand free repair, I think. And then never go there again.

[jdoorn14]

Check to see if the idiot also put an inline fuel filter in. Fuel flow through the petcock is vacuum open in all except Prime. In all cases, our fuel system is gravity driven, not by fuel pump. Fuel filters almost always require a fuel pump to work well at higher speeds.

Not saying this is the solution to your problem, but it sounds like this guy doesn't know jack about our bikes and didn't even bother to look it up in the service manual.


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[Janx101]

 

So this guy is doing bikes now?   

[rexpepper651]

id think that would be the prob fix that first and then check your fuel tank cap vent.

[Watcher]

...

How can there be too many fuel lines?  There's either enough, or not enough, never too many.



If it isn't a fuel issue, check to see if the bike will free-rev at full throttle.

I had a similar issue with my bike where around town it was great but on the expressway it would peak at a certain speed.  If I tried to give it more throttle it would break up and I'd loose speed.  The culprit, at least according to an "expert" I talked to, was that the valve springs were worn out and the valve's couldn't keep up.  Can't really say if it was or wasn't since my bike hasn't gone back together yet, I am still getting all the parts together so I can rebuild the engine.
What's the mileage on yours?

[The_Paragon]

Instead of holding wide open, roll off the throttle to like 3/4 or 7/8 throttle, it it stops breaking up and accelerates normally; your too rich on the main. And thats what it sounds like to me.

Or.. pluck your air filter out, and take it for a quick scream, if it runs normally then, Youre too rich on the main jet (assuming that you're running the stock air box)

[Meuryn]

Also check the carb vent hose is routed to a sheltered position - if it's open to the elements it causes the bike to stutter at highway speeds, just as you described. It should normally terminate behind the battery, I had this problem even with hose routed correctly and solved it by wrapping the end in wire wool and routing it normally 

[Sycotravis]

Ok here's the stuff I know so far raining so can't do much

the idiot took off my tank vent hose

He eliminated the petcock reserve hose from tank and frame petcock

I don't know what he jetted the bike with

I'm not paying him for any more labor this is rediculous supposed to be a performance shop called FULL THROTTLE and I can't even use my throttle like that lol

And I am running a Vance and Hines and a k&n currently

Thanks for all help I will update with more soon




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[yappahgo]

said there'd were too many fuel lines

Sounds like he doesn't have the hands for this kind of work. Running those lines is tricky and it can be a tight squeeze, but you can't return a bike to a customer with such a serious deficiency.

The lack of a reserve fuel line is bad (because it will leave you with no warning of when the bike is low on gas) but it is NOT the cause of your problems. The valve in the petcock completely blocks fuel from flowing through the reserve line when you are in the default "on" mode of the petcock, there is no possibility that the lack of a reserve line could cause fuel starvation.

the idiot took off my tank vent hose

I don't think the tank vent hose is necessary. It's for that California unit, right? On my bike it doesn't go anywhere...

at full throttle the bike breaks up and stalls as if not enough fuel

I agree with the suggestions in this thread. Another thing nobody has mentioned is just checking that your fuel lines are not crimped or kinked anywhere. I can imagine a scenario where one of the lines is partially crimped and the carbs are able to get enough fuel for most things, but not for sustained full-throttle running, which will burn fuel faster than the gravity feed can supply it through the crimped tubes.

[robfriedenberger]

The tank vent isn't needed to run right, I've ridden a few months with out mine connected before I realized.


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[Sycotravis]

I will check for crimped lines although I didint see any when I lifted the tank up to check it out and the reserve line not being there isint a problem for me as I top bike off daily and only do 1 round trip to work and back about 90 miles and maybe a little riding in city for a few miles bike does run great only when I try and go at highway speeds it will break up and stall out if i try it even if I slowly throttle it will do the same thing


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[BockinBboy]

Red flag here. Tank vent hose = aka tank overflow. Gas can get above the neck of the tank. If it does it will drain via that hose. No hose on there means it dumps gas right onto a hot engine = fire. It's happened     

The only hoses that aren't necessary on this bike are those of the PAIR system. Also, some cases the battery vent/overflow if you have a sealed battery which doesn't require one. Otherwise, trust that Suzuki knew what they were doing - the gs500 is an economy bike, and they wouldn't add cost to the bike if it didn't need it.

- Bboy

[Sycotravis]

Thanks I will certainly add a hose back onto that


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[Old Mechanic]

If he took the tank vent hose off then you could have fuel leaking down on your engine!!!!

If he plugged the tank vent you could have a vacuum in your tank.

Try opening the fuel cap and then close it to see if it has a vacuum.

That could affect your top end (excess vacuum in the tank).

regards
Mech

[Sycotravis]

I had tank off today no bent lines and tank vent has no hose but not blocked

Also don't have any kind of a breather on my vent tube that comes out of top of motor could that affect anything


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[Meuryn]

I had tank off today no bent lines and tank vent has no hose but not blocked

Also don't have any kind of a breather on my vent tube that comes out of top of motor could that affect anything

Probably not, I've just got the tube with no breather filter, there's already one inside the head cover anyway. Did you check the carb vent hose? Was it routed to a sheltered position? Takes 5 minutes to check, certainly worth looking at.

edit: wording

[Sycotravis]

I will take a look before I reinstall tank


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[Sycotravis]

Upon looking over lines a little better today I found that I did in fact have a hose bent that went to the carb from petcock how I didn't see this I don't know thank you everyone for your help I appreciate it


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