92 SECA II XJ600 HELP!!!

The bike starts and idles with choke in but dies when gas is applied!
With choke out bike idles better and gas can be gently applied!

I have cleaned the carbs last night

Is this a sync problem?
if so where do i connect the vacuum sync tool and what do I need to adjust?
PLEASE HELP!!

 

what carbs are on your bike ? Hitachi, or other..

 

Mikuni i believe?

 

Did this bike sit for an extended period of time?

That bike has a Fuel Pump. The Pump could be clogged among a list of other Fuel Delivery issues.

For that Bike ... YOU NEED a Factory Manual.
We would ALL NEED the Factory Manual.

You'll have to pull the Fuel Pump and test it.
You have some special tuning to attend too.
Most of the issues you will need detailed instructions for the "How To" part.

Order a Manual.
You MUST have a Manual to do things like:
Fuel Filter extraction and testing.
Fuel Filter cleaning.

Carb Cleaning and Tuning.
Although the theory is the same as most of out XJ-Bikes ... your Carbs are "Down Draft" and require some maintenance outside the realm of our more simpler Side Draft Carbs.

 

This bike had set for 5 to 7 years with gas in the tank.

 

Those Carbs nened to come off and be Cleaned. The Jets and Passages get more caked on those Carbs because they fit in there on their sides as opposed to everything being in the bottom-end of the Maxs' and Seca's.

Our old bikes dont run a Fuel Pump, either.
You may encounter some difficulty with that Pump after sitting around a lot.

I'm not sure if that Pump is one that you can reverse the wiring to and back-flush it with Cleaner or fresh Fuel.

But you will need to do a thorough Carb Cleaning to get everything open and make them tune-able. They might be a mess in the Float Bowls.
You have to open the Float Bowls to see.

Running a Cleaner through them will only make the situation worse. The leftover residue will loosen and contaminate the Jets.

 

I have disassembled and cleaned the carbs and they were not that bad and still having the same trouble.

With Bike Cold

With cold bike and choke off
Bike starts and idles at extremely low rpm almost to the point of dieing when gas is applied bike dies.

With choke on
bike wants to idle at 2500 to 3000 rpm which is to high

With hot bike and choke off
bike idles low and when gas is applied acts like wants to die if applied to fast bike will die

It almost seems like there is a gap between idle and main jets fire causing bike to die

I checked for vacuum leaks last night and could not find any
I was told to spray WD-40 on boots and hoses and listen for motor to rev

fuel supply seems to be ok, I pulled the fuel hose off the carb and gas shot out

Bike has new plugs

I think I need to go get vacuum gages tonight

Any suggestions would be greatly appreciated Thanks

 

This is a familiar story.
When a bike runs on the Choke but not when the Choke is off ... it means that the Pilot Jet Circuit is in need of adjustment (or cleaning!).

Locate the Pilot Mixture Screws and see if they are open and you can see the slotted head of the Screw ... or, ... there are Plugs installed to keep you from being able to tweak them.

If you have access to the Screw Heads ... MAKE yourself a Special screwdriver for adjusting those Pilot Mixture Screws.

You want the tip of the blade to FIT the Slot with NO Free-play side-to-side, at all.
None.
It's vitally important that the tip of the Screwdriver fit the Slot with NO play.
You need to have the whole Pilot Screw turning when you make an adjustment.
Not just the top giving-way to fill-in the gap of an ill-fitting tool.

That's how those Screws become damaged.
An ill-fitting tool allows the "Wings" either side of the Slot to deform rather than apply turning force to the whole body of the Mixture Screw.

Look for the Pilot Mixture Screw here:


#-28 = Cap or Plug
#-5 = Pilot Mixture Screw - Spring - Flat Washer - O-ring (Assembly)

 

Thanks I will give that a shot tonight! Gonna take carbs apart and clean them one more time for good measure.