Did the rain screw up my bike or was it a coincidence?

[Rijko]

... And I think I need to clarify a little more
... And yes the petcock was left intentionally on prime

thanks for clarifying that, indeed that was the point i was making

[Cipher]

The o rings that seal the brass seat of the needle valve age and allow fuel to seep slowly past.
They are a bugger to remove without damaging the brass.

I had a sump full of gas once because of this. valves fine o rings dead.

[Suzukian]

Like I said in a previous post: The float valves where fine, it was the O-ring on one of them that failed and allowed it to leak. And I think I need to clarify a little more because I didn't loose all the fuel in an instant. It was over two days. And yes the petcock was left intentionally on prime on day two to see if it would still leak, and because the bike was on the centerstand and tilting forward the gas ran into the engine(which is impossible for me to see from the outside). It wasn't untill I jacked up the front end to tilt it back that it started to run into the airbox and out the drain hose where it filled up a jar pretty quickly.
Also you have to consider that even with a running engine the amount of fuel trying to enter the carb outweighs the amount of fuel being used (at low throttle at least) so with a failed needle valve or o-ring the carbs are still gonna leak fuel at a decent rate.
Again I checked the petcock several times yesterday and didn't found it faulty.
There is one of those see through fuel filters on there so it's easy to check fuel supply.
And even so, lets say the petcock is faulty and fuel runs all the time: As long as the needle valves and o-rings are good the carbs will not overflow, because they shut of the fuel.
Anyways, not saying you're wrong, not saying I couldn't have accidentally put the petcock on prime instead of on after i filled her up and fuel started leaking on the way home and kept leaking all through the night....
And I will definately keep an eye on the petcock(and order an o-ring kit and needle valves.



If where talking regular led or agm batteries like on this gsx then yes, but my gs runs a lithium battery so I opted for a lithium specific regulator with a lower charging voltage for that one.
The battery on my gsx is brand new and was fully charged before I ran the tests. The fuel hoses where changed when I cleaned the carbs.
I'm trying to fix it but it seems as soon as I fix one thing another thing pops up And then fall and winter is creeping up real fast over here now so I'm also fighting the clock, to late and I have to wait untill next year to do anything....

Thanks for clarifying the type of battery you are using. That kind of detail helps a lot of people, and educates others like me.

[Spiff]

Here's some more info for you on the case:

-seems you where right about the petcock after all, it does dribble a little in the ON position. It's tight in the RES position though. This is probably why this didn't happen untill I filled it up. Also this leak was two small to be noticed though the fuel filter. I stand corrected.
-ignition system has been checked. All plug caps are wack except for one. Coincidentally the same one that shows a richer mixture then the others. The worst plug caps where on 1-4 with over 800k ohms, the plugs with the leanest condition.
I'm gonna steal the caps of off my 1100 and see if it accelerates as it should.
Stay tuned...



(see what I did there?)

[Rijko]

see what I did there?

you came here for advice, learned something, and improved your bike is what it looks like to me.
And reported back so we could see the advice was sound. (we learn from that, too)

Sounds like WIN-WIN to me ... thanks

[Spiff]

I did pretty much the same route today and the plugs indicate a richer burn but I'm still not convinced it's going as it should. Still feels lazy.
I also noticed on the plugs that number two was really black, and the smell of fuel is pretty bad, so I take it the needle valve isn't stopping and at least that carb is over fueling.
Anyways, I'm gonna call it quits now. I don't have the space and time to figure it all out now but thanks for your help so far.

[Suzukian]

I don't remember if you said you rebuilt these carbs, but you may find it worth while. When I did mine, it solved all kinds of little demons I was chasing.

[Big T]

I did pretty much the same route today and the plugs indicate a richer burn but I'm still not convinced it's going as it should. Still feels lazy.
I also noticed on the plugs that number two was really black, and the smell of fuel is pretty bad, so I take it the needle valve isn't stopping and at least that carb is over fueling.
Anyways, I'm gonna call it quits now. I don't have the space and time to figure it all out now but thanks for your help so far.

You need to check to see if fuel is running down the vacuum line into number two carb

[Spiff]

I don't remember if you said you rebuilt these carbs, but you may find it worth while. When I did mine, it solved all kinds of little demons I was chasing.

Not a proper rebuild, just removed all jets, needles and opened them up and made sure all the passages where open. But it wouldn't surprise me if some *@%^$*@%^$*@%^$*@%^$ has loosened after use and started to clog something up...
I watched a video I filmed yesterday from last Sunday and the thing ran perfect. It's like it ran good, then the more I have driven it the worse it has become

[Spiff]

You need to check to see if fuel is running down the vacuum line into number two carb

Thats not a bad idea actually!

[Suzukian]

Smell your crankcase oil, put some from your dipstick and run in between your fingers to determine if the viscosity has thinned out by gasoline getting in there. Check the level, if it's higher, then it may have topped off with gasoline making it by either a float, or a bad petcock.

[Rijko]

Buddy of mine recently serviced a bike, would run great but within 15 minutes into the test drive would start running bad.
Turned out there was a bit of water in the tank.
Clean carbs, run great on external gas reservoir but when connecting the gas tank just a few drops
of water in the carbs would mess things up.

[Rijko]

You need to check to see if fuel is running down the vacuum line into number two carb

yes, another good quick check is disconnect the vacuum hose, (and plug it) and run on prime.
Rules out gas through vacuum hose, but also issues like leaking vacuum hose and throughput
while on vacuum operated ON/RES.

There is one of those see through fuel filters on there so it's easy to check fuel supply.

May want to temporarily remove that, some of those restrict gas flow.