need help adjusting float bowl on 07 venture

[bogito]

I removed my carburetors to address a significant fuel leak when the ignition is turned on. I have thoroughly cleaned it and inspected the float pin. I wanted to verify the float height before reinstalling them. I found diagrams showing the procedure and the required height 8-9mm. The problem is that the measurements were far off on all four carburetors and even radical adjustment to the tab will not raise them up to the required 9mm specification. I have done this many times on other bikes and cars and have never run into this before. Is there an experience base out there to give some advice and guidance?

[M61A1MECH]

Go to the second gen read only tech forum here on Venturerider a Vgoose did a very good write up on how to set the float heights on those carbs.

[Freebird]

Yes, here is the link:

 

http://www.venturerider.org/forum/showthread.php?24246-Set-the-Float-Levels-on-QuickSilver

[bogito]

Thanks for the quick reply's, wow that explanation was spot on. I actually arrived pretty much at the same solution after I posted so the bowls went on and I installed the carbs. Unfortunately the root problem remains. If I turn on the ignition and pull out the choke with the gas in the "ON" position, everything remains dry. As soon as the bike starts it begins to drip fuel from only God knows where, by the time I see the first dip fall, the bottoms are all dripping to some degree from the lowest point on each. I did notice in particular that the manifolds on the drivers side left are saturated. Only when running!??

 

any thoughts beyond the float pins and seals?

[videoarizona]

Only when running on all four carbs?

 

Boy... That would be quite rare to have all four carbs leaking.

 

So..... I'm going for the fuel line or fuel rail has a leak and it's running down all carbs.

Take off the tank..... Scoot should run for a few minutes without tank. Look for leaks under the air plenums....

 

Dry off the top of the carbs first... In fact... Dry them completely. Then run test. You can run scoot longer with tank on table near bike and long fuel line.

[bogito]

The air box is still off after reinstalling the carbs. Partially to verify and spot leaks from above. I rerouted the fuel line to the tank and it is resting on a small table. The fuel line or fuel rail seems to be dry. Unfortunately the drips at coming so quickly I believe they at migrating from a common spot just finding the easiest path of least resistance. I think it is significant that it only happens when the engine is running. I would think that with the ignition turned on and engine not running would rule out the float pins... I will continue to try again tomorrow, starting with dry surfaces and hopefully at some point I will find the source.

 

Many thanks for your input.

[videoarizona]

The air box is still off after reinstalling the carbs. Partially to verify and spot leaks from above. I rerouted the fuel line to the tank and it is resting on a small table. The fuel line or fuel rail seems to be dry. Unfortunately the drips at coming so quickly I believe they at migrating from a common spot just finding the easiest path of least resistance. I think it is significant that it only happens when the engine is running. I would think that with the ignition turned on and engine not running would rule out the float pins... I will continue to try again tomorrow, starting with dry surfaces and hopefully at some point I will find the source.

 

Many thanks for your input. [/Quote]

 

Welcome. Maybe lay some paper towels down on top of carbs and under the fuel rails. There are "T"fittings to feed both carbs on each side, I think, and the entire system of fuel delivery could be compromised for whatever reason. That's the only reason I can think of why all four carbs appear to be leaking. Multiple fuel line leaks or one leak that is dropping perfectly down all carbs. As to why when running and not under pressure? Good question. Vibration is about the only difference I can think of off the top of my head. Good luck and keep us posted.

[bogito]

I should apologize. Ihave the same problem in two different posts. I’ll know better next time. Iwrapped the fuel supply lines with tissue and found one of them really wet thetissue quickly after starting the bike. Iremoved the assembly again and cleaned everything in the carburetors thoroughly…again. I found that the “T” connections between the carburetorsare $70. WOW! After I inspected themfor physical damage, and finding none, I have decided to try a thin film offuel resistant sealant on them and reassemble. I want to try this before I order parts. Even if it only holds for a minute it will verify the source of the leak. Then I can order the parts and clean up thesealant residue.

[bogito]

Alright, the problem with the leak and the float adjustment are both resolved. The culprit for the leak appears to be the "T connections on the fuel feed and possibly the bowl gaskets are suspect too. I used a fuel resistant gasket seal on both and the problem disappeared. I don't trust this for a permanent fix so my next and hopefully last action will be to order and install new "T" connectors and bowl gaskets.

 

Many thanks to all of you that spent the time analyzing my problem and offering help and suggestions.

 

Special thanks to Vgoose for providing a excellent process for aligning the floats.