Fuel Solenoid Valve/Petcock

[pibroch1]

Hello…haven’t ran my 1100 Sport in a couple of years. Dusting her off…looks like the left side solenoid/petcock is allowing fuel to drip into the carb when off. Question - can you rebuild? Or, just go back with manual petcock… if you recommend the latter, please suggest one that’ll work. 
 

Thanks men…appreciate!
 

Sean

[gstallons]

You install a new manual petcock along with a new gasket. No electricity required.

Edited May 26 by gstallons
spelling error

[Lucky Phil]

7 hours ago, pibroch1 said:

Hello…haven’t ran my 1100 Sport in a couple of years. Dusting her off…looks like the left side solenoid/petcock is allowing fuel to drip into the carb when off. Question - can you rebuild? Or, just go back with manual petcock… if you recommend the latter, please suggest one that’ll work. 
 

Thanks men…appreciate!
 

Sean

The problem isn't the fuel tap it's the needle and float in the l/h carb

Phil

[Kevin_T]

I just changed my manual petcock and after a week it seems the o-ring is starting to swell. Crap, guess I'll have to Phil's mod or I wouldn't be able to turn my gas off soon. Changing the petcock might not be as simple as it appears.

Sean how was the bike stored was there still gas in the bowels? Might be residue on the floats they are precision instruments. You also need to check the metering needles for any pitting. You could get float and needle working just to have your mid-range trashed.

 

[pibroch1]

Took the carbs off (Mikuni Smoothbores - TM38-86) always ran/jetted perfectly. Only run 91 octane/non-ethanol gas. Floats weren't stuck, everything appeared ok. Dropped the oil pan, and engine oil contaminated with gas for sure.

PHIL - (you and kiwi roy helped me rebuild a v11 rosso mandello years ago)I was thinking if the left side petcock is allowing fuel to bypass, would that allow the fuel to get into the engine? Could this be why the bike is running like crap? Could it be as easy as swapping to manual petcocks, changing the oil, putting the carbs back on?

Know you don't have a crystal ball! 

Lastly, what's the best way to clean the carbs - now that I do have them off...

Thanks for the help guys - sincerely appreciate.

Sean 

[audiomick]

9 hours ago, pibroch1 said:

... if the left side petcock is allowing fuel to bypass, would that allow the fuel to get into the engine? ...

As far as I understand it, whatever the vehicle, after the petcock comes the carburettor. If there is fuel finding its way into the motor, it is not because the petcock is faulty, but rather because the carb is letting it through. Generally because the needle valve is not shutting off properly, I gather, as @Lucky Phil mentioned a couple of posts up.

I reckon a visual inspection of them isn't enough to say they are ok. You don't need much wear on a sealing surface that is supposed to hold back fuel for it to not seal.

Also, as far as the bike running like crap goes, if the needle valves are not sealing properly, you may have a too high fuel level in the float bowls, which can cause the bike to run rich.

[Lucky Phil]

Forgot to mention you can disassemble the electronic fuel tap as well to clean it if needs be.

Phil

[pibroch1]

Guys…sorry for not acknowledging your replies sooner. I sincerely appreciate - got sidetracked.

Have some time tomorrow, so will start digging in a bit.

Fingers crossed.

Back in touch shortly with results-hopefully positive.

Have a good night men.

Sean