Quote from: aussiegs on August 10, 2011, 02:06:51 PM
Did the valve check all within spec bike has only done 20 000k. Plugs are correct, and same problem before and after the filter. Slides and diaphragms looked good and moved freely, I ran the bike without the airbox yesterday quickly to check there movement and they moved together and ok, all the springs were ok too. Would too much fuel in the bowl cause this? I'll triple check my float bowl height then pull the carbs off again if they check out ok again. By the smells of things I think im rich and I'd like to no how that happens when nothing has been touched. Here is what I've done to the motor so far: valve clearance check(all in spec), head re tension, new plugs, new air filter, in line fuel filter, carb clean, new exhaust gaskets, (stock carbs and exhaust).

The floats can have the same effect as running rich,if they're set to high. http://www.bbburma.net/FloatHeight.htm

Ok I did the bowl drain float height check my fuel level is about 5mm above the gasket of the bowl, is this enough of affect it?

According to the link that Ben2go provided, it should be level with the float bowl gasket.

Quote from: Big Rich on August 12, 2011, 01:38:03 AM
According to the link that Ben2go provided, it should be level with the float bowl gasket.

True I would put the pics of the level up but I'm on my iPhone with no access to a computer. I can imagine the fruck around getting the level just right I just hope this cures my problem.

Quote from: aussiegs on August 12, 2011, 05:52:37 PM

Quote from: Big Rich on August 12, 2011, 01:38:03 AM
According to the link that Ben2go provided, it should be level with the float bowl gasket.

True I would put the pics of the level up but I'm on my iPhone with no access to a computer.

You can email photos to your photobucket account - assuming you have one.

Michael

You can email photos to your photobucket account - assuming you have one.

Michael
[/quote]

I link from my Facebook.

I don't know how sensitive the GS carbs are to float level, but normally the float height tolerance is only +/- 1mm. So 5mm over the gasket is pretty big.

Quote from: aussiegs on August 12, 2011, 12:45:23 AM
Ok I did the bowl drain float height check my fuel level is about 5mm above the gasket of the bowl, is this enough of affect it?

That would cause running issues.The level should be right at the split between the float bowl and carb body on both carbs.

Ah well let the fun begin hope this is my cause, but will have to wait till I get home from holidays lol. Thanks to all for help I'll keep it updated see how we go. 

I did my U tube check with my floats on average there about 3 - 5mm above the float bowl, so after searching round the forum I got a pretty good idea on what and how to do. So after doing that and checking my measurements etc I again did the U tube check and my levels are still the same. Ive got my haynes infront of me ive printed off a few pages to make sure but no matter what I do the fuel level wont change. Ive even bent the tab to give me a gap of 11mm and still no change. So far ive only done this to one carb so once I get one right the other one will be easier hopefully. Any ideas?

I have admitted defeat! Bike is going into the shop Tuesday. 

Quote from: aussiegs on August 17, 2011, 08:17:44 PM
I did my U tube check with my floats on average there about 3 - 5mm above the float bowl, so after searching round the forum I got a pretty good idea on what and how to do. So after doing that and checking my measurements etc I again did the U tube check and my levels are still the same. Ive got my haynes infront of me ive printed off a few pages to make sure but no matter what I do the fuel level wont change. Ive even bent the tab to give me a gap of 11mm and still no change. So far ive only done this to one carb so once I get one right the other one will be easier hopefully. Any ideas?

This sounds like a bad float needle and seat.Possibly a bad O ring on the seat.These are also called fuel valves.

Went out and changed my o rings all if them except the pilot screw one I'm leaving that to ppl who no better than me. Still the same problem. Buggered if I no what's going on.

Would timing cause my problems??? Just thinking out loud.

Quote from: aussiegs on August 20, 2011, 08:45:35 PM
Would timing cause my problems??? Just thinking out loud.

Let's recap...

Spark good?
Airfilter?
Fuel flow?
Exhaust?
Jetting?
Battery?
Airflow screws?
Idle screw?
Throttle response?
Choke?
Valves?

Spitball'n... did you do the 'spray cabs to test for air leaks' trick?

'bout only thing left to test would be timing

Michael

I take it that's the with the bike running coat the carbs etc with soapy water and watch for bubbles or where it's been sucked in? Also checked the plugs right plug was good left plug was wet so bit of extra fuel going in there.

That isn't extra fuel in one- unless it's jetted differently than the other carb. A wet plug is usually because of a weak spark (or lack of compression). Are you sure the dry plug is getting gas?

The actual timing on a GS is pretty spot on since it's an electronic ignition.

Spray joins of the outside of the carb boots - black things between carbs and engine - with some WD40, while the bike is running, to see if the engine responds differently (ignore arrow).



One dry spark plug one wet one...

Have you done the "arc spark plug on side of engine block" test?

Care to share a pic of your spark plugs so we can see how they look?

Michael

Now that's interesting. Yeah other plug looks good how a correct running plug should look, so does the other plug. But this is weird the plugs are less than 6 months old but yeah I'll chuck new plugs and put a meter over the coils.

Oh k I'll do that mister I'll throw up pics of my bowls and plugs tommorow