bogito

Never under estimate the strange effects that a bad, corroded or loose ground cable can inflict. Along with all the other things you do don't overlook the simple stuff.

Clearly I have more than enough verification to move forward. Thanks to all of you for your good advice.

I was cleaning my carburetors and I removed the air mixture needles. I noticed at reassembly that one of the "O" rings had been left out. So I took them each out to find out which one was missing the ring. That's when I noticed something really odd. There is a metal washer and an "O" ring on each needle. Seams to me that the metal washer should go between the spring and the "O" ring. (To protect the ring if the spring rotates.) However, looking at the exploded parts breakdown, it seams that the correct order is to put the spring on the needle, then the "O" ring then the tiny metal washer...insert and screw it down. I wish I had paid attention when I took it apart but I would swear that the "O" ring was on the outside. Can anyone verify the correct order for me? I am waiting on new "T" fittings and bowl gaskets to come in, so I have a few days. Please don't guess. If you have a benched carb for reference please check it out. I attached a portion of the exploded view I found online. I couldn't get it centered but the needle assembly is at the very bottom.

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.

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.

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.

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.

OK, Thanks for your input. I tried turning the ignition on/off about 4 times and waited a full 30 seconds each time to see if there was a sign of leaks. Note that I never actually started it. Each time I could hear the pump spin up to preload the carbs. No leaks were detected. Afterwards, I put tissue around the fuel line and fuel rail and down below the carbs. Then I started it up. The leaking began immediately and I shut it off after about 10 seconds. One of the "T" junctions (left side) got the tissue wet. So I know now it is probably bad. Can't understand why it only happens when the engine is running though. There was also fuel dripping off the rear bowl. can't guess where it came from. Maybe it is all just the hose connections. I am going to get some replacements tomorrow and give that a try. Still don't know how the two manifolds on the left side are getting wet... I'll post my results tomorrow night.

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.

I have a leak that has kept me from riding my 07 RSV for a few months now. I just finished cleaning the carbs and setting the float height. The problem remains. If I turn on the ignition and pull out the choke with the gas in the "ON" position, the pump spins up to run and 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 input manifolds on the drivers side left are saturated. Only when running!?? any thoughts beyond the float pins and seals? where is the overflow on these carbs

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?

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?