New member with a big leak.
KTRT:
Hello everyone.
I bought my Valkyrie back in February, and been riding regularly for a while.
In early June I noticed the fuel Petcock was leaking, so I replaced it. On removing the old Petcock, I noticed there was no filter on the tube going inside the fuel tank. Meaning I probably ran for a while with stuff getting flushed down in the carbs.
More recently, I’ve been having a *big* leak when starting the engine. It appears to come from the middle of the carb bank. Last time it fixed itself after hitting a slight speed bump.
Also, sorry for not posting photos, I just can’t get them to the right format and size.
I’m heavily suspecting a stuck float needle. I’ve read around the forum, before going full carb removal :
-remove the drain screws, spray carb cleaner down.
-just tap it, solve the problem (don’t think it’s a lasting solution)
-tighten the screws holding the carbs together (did it, apparently didn’t do much).
So, while I’m not too worried about removing the carbs, I’m kinda worried about having to do carb sync afterwards, since I’m lacking the proper gear. Also, I’m in western Europe, so finding a mechanic that can repair anything pre-2020 is kinda hard.
I thank you in advance for any advices you might provide.
98valk:
""Meaning I probably ran for a while with stuff getting flushed down in the carbs. ""
How dirty do u think the gasoline from the pumps is? American gas is not third world gas.
tighten the end nuts of the thru bolts that hold the carbs together. manual does require all nuts and bolts to be checked.
https://madisongroup.com/o-rings-an-effective-simple-and-versatile-sealing-solution/
""In order to seal reliably, a continuous “seal line” must be formed at the interface between the O-ring and the mating gland surface. The creation of this “seal line” is a result of a combination of the gland design, the O-ring cross-section, and the proper level of compression of the elastomeric material.""
KTRT:
EU, not US, though I know our fuel has a fair bit of ethanol in it.
I know she sat for a while last year (about six months) with the fuel tank empty, but the carb bowls were probably not purged.
From what I can gather, the leak happen somewhere between between and behind carb 2 and 4.
That said, I’ll probably pull the carbs altogether, if only for peace of mind.
Joe333x:
Download the service manual.
https://web.archive.org/web/20220328115011/https://valkyrienorway.com/download.html
Order a rebuild kit and follow the manual on the rebuild. The manual gives you a set number or turns that you can use for setting the air/fuel and and sync screws. Having a colortune and digisync would be better but doing it the service manual way should get you to good enough.
Hook#3287:
Quote
I noticed there was no filter on the tube going inside the fuel tank. Meaning I probably ran for a while with stuff getting flushed down in the carbs.
Did you look up into the tank where the petcock was? It's been reported that sometimes the fuel strainer screen will stay in the tank when removing the petcock.
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