Question about GS550EF Carbs

[gaillarry]

Restoring an 84 GS550EF. Cleaned the carbs, got new o-rings, float bowl gaskets and a few jets. Question about the hoses on the carbs. The manual states 3 hoses - my carbs have two. One vent and one fuel?

Reading an old post here, mentions a T fitting for fuel. Can someone confirm that the fuel feed is between the 2 pair of carbs (clear hose) ??



I put a t fitting between the 2 carbs, hopefully this is correct. Strange there's only one vent hose on the right bank of carbs, nothing on the left side.

[JEEPRUSTY]

fuel feeds into the carb on the right and is transported to the left via the metal tube.

The clear is an vent to atmosphere.

[gaillarry]

Got this from an older post:

The 5/16" line is fuel and connects between the gas "T" fitting junction between the 2 and 3 carbs and the large inlet on the petcock. The 1/4" inlet on the petcock connects to (usually...can vary with models) the vacuum tube on the left side of the #3 carb. The vents on the float bowls are vented to atomspere and connect to nothing. You may have a vent hose coming from underneath the fuel tank if you have a gas guage, it will vent to atomsphere. The vent line on the right side of 1 carb, right side of 2 carb and left side of 4 carb is usually to atomsphere."

Manual, microfiche doesn't really show anything about the hose routings, only that there's 3 hoses to the carbs. There's no metal tube between the carbs, just a clear fuel hose.





So, I'll remove the T fitting and hook things up as shown in the first picture. The clear fuel line between the carbs, I'll vent to atmosphere.

[JEEPRUSTY]

Small black hose is vacuum line which attaches to petcock
large black hose is fuel line which attaches to petcock

What you have joined in a T is the airvent.

[MelodicMetalGod]

Just like previous poster said.
Here's a shot of mine when I pulled them last. Mine didn't have the T-fitting but instead just had two lines for the vent ports.

Fuel: The coil/sping wrapped line
Vacuum to petcock: Small line up front
Vent to air: The other two lines

Good luck!


PS: Check my signature for helpful links for our bikes.

[gaillarry]

Thanks all, got them installed. Starts on full choke but can't set the idle, have hold the throttle open. There's a little slack in the throttle cable and the idle knob doesn't seem to do much. I'm using a separate fuel supply but have the vacum line plugged.

[hikermikem]

Thanks all, got them installed. Starts on full choke but can't set the idle, have hold the throttle open. There's a little slack in the throttle cable and the idle knob doesn't seem to do much. I'm using a separate fuel supply but have the vacum line plugged.

Gotta have the airbox connected... won't run without it

[gaillarry]

Airbox is connected but found a nice rip in the front carb boot on the head. Ordered a new one from Suzuki $40.

[JEEPRUSTY]

Airbox is connected but found a nice rip in the front carb boot on the head. Ordered a new one from Suzuki $40.

Its a nice way to rip an airry.
that blows a new one is needed though sad to say.