Carb issues!

[Guest]

Hi all; I've been away from the site for a while and my old handle got deleted. (fiftygs1100g) Strangest thing, I rebuilt the carbs on my gs1100g (82) with new o rings and a super cleaning according to the guide. It was the third rack I've done and it seemed to go smoothly. Now it will start on full choke but as soon as I try to rev it at all it cuts out and refuses to run. I've cleaned the tank and installed a new petcock and added an inline fuel filter. It seems to starve for fuel as soon as I ease back on the choke as it warms up and give it a blip it just bogs and dies. Very strange behavoiur. I thought maybe the supply hose was pinched because I added the inline filter but I'm just grasping for ideas and or someone who is good with carbs over here in Vancouver. I thought we had a couple of members over here but I can't recall who they are. Anyhow anyone who wants to wade in with some other ideas would be most welcome as I've started to pull out my hair. Cheers Paul

[azr]

Have a look at all the choke plungers and make sure they are seating completely, make sure the choke cable is not hung up anywhere or maladjusted etc...

[BigD_83]

Hey Paul. Been awhile since you've been on I gather. I hope that means you've been riding more than wrenching.

Ditch the inline filter. If you have cleaned the tank and have a new petcock, crud shouldn't be a problem.

+! to what Rob says. Any chance you dumped a plunger in the cleaning solution?

Derrick

[Spyderman]

is it stock and using the airbox because if it is and the airbox is not on then it will give you a hard time until it has the airbox back on as well as you may be just a little lean and the pilot fuel and air mixture screws may need adjusting a bit more to achieve what you are looking for



if you really want a fuel filter just to be safe then a high flow filter is what you need

i use this filter on my 78 Skunk and have zero fuel flow issues



95 CBR 900 RR fuel filter emgo part # 14-34481

very good filter and doesn't restrict fuel flow to cause any problems

[ManyGeez]

Hi Guys; and many thanks for your responses! I'm running a stock air box with a brand new air filter. In re-assembling the rack I was meticulous about getting all the bits back together. Cable routing seems fine and they all move freely. The reason I did the carb rebuild was that this very problem of not wanting to run without choke and dieing when I try and feed it some throttle was occurring. I was told when I bought the bike that a shop had just "professionally" rebuilt the carbs. It seemed to run fine for about a 1500 miles and then it was back to this issue again. Given the amount of mismatched incorrect screws used in re assembly by the shop I wonder about how professional things were. Last time I looked in some of my local shops there were some kids back there a wrenchin' away but it seems we don't have journeyman mechanics anymore just "technicians". It's also why I was asking around if anyone in my neighbourhood knew of any gifted carb guys around. Cheers Paul

[azr]

Well it's like they say, the bike only need gas, air and spark to run properly. It's just a matter of ruling out those 3. Have you vacuum synched the carbs since you put them back on the bike? or at least hooked the synch up to the bike to see how close they are. Maybe that's why it ran fine for 1500 miles and then started to do it again, maybe one or more of the synch screws on the carbs came loose?? just thinking out loud.

[BigD_83]

If you don't have one, I can help you out with the carb synch.

[60ratrod]

I'd offer up a hand, but I'm south of the border and never been up your way