Guess I am gonna havta pull carbs again!!!!

[hueco]

I had to have ankle surgery Oct. 20th 2015. Was down for 3 months. Like a dummy I did not put Sta-Bil in gas. When I was able to ride. She run like crap,,at low speed. Have put one can of Dura Lube Severe Fuel  System Cleaner though the Tank and 1/2 can of Seafoam. No improvement. Goes Burp burp burp at lower speeds. You know. Instead of a smooth flat 6 purr. MPH is in the shitter. Just replaced low speed jets 12,000 miles ago. Gonna have to pull carbs. Dammit. What is drill # I need to push though low speed jets? Thanks. Lee.

[John Schmidt]

Usually you'll ruin them trying to clear them with a drill. Get a new set from Jets R Us and be done with it.

http://jetsrus.com/a_jet_kit_street/honda_1500_valkyrie.htm

[valknomad]

I did my carbs last winter, and did my Brother's bike this winter.  I've been happy with the #38 Slow Jets (on both bikes).  But I think the biggest improvement is from simply a good cleaning of all the ports, with Carb Cleaner.
Neither of the (2) bikes I took apart showed much "clogging" of the Jets. But the ports they screw into had a far amount of "micro-scopic" crap that comes out.

[Steel cowboy]

Before you start tearing into the carburators, check all your vacuum lines. Check you have no leaks around the manifold's too.

[Hook#3287]

Can't speak to the Dura Lube product, never used it, but I'd run some Berryman's B-12 or Techron thru her before I'd take the carbs out.  But that isn't a cure all.  The last carb job I did for a buddy, he ran 2 or 3 cans of B-12 thru his bike and we had to pull the carbs anyways.  Two of the 35's were still gummed up, but the rest of them were nice and clean.

If that doesn't work, as mentioned, I would definitely go with NEW jets.  Learned that lesson the hard way 10 years ago.  You don't want to pull them for a third time.

I've done 38's on all my bikes w/o issue.  It's been claimed the 38's promote carbon build up, but I'd rather that then pulling the carbs every time I fail to treat the crap gas.

Before you start tearing into the carburators, check all your vacuum lines. Check you have no leaks around the manifold's too.

    Do the easy stuff first.

[Steve K (IA)]

Before you start tearing into the carburators, check all your vacuum lines. Check you have no leaks around the manifold's too.

Also, the stock petcock can be a source of a vacuum leak if the diaphragm is torn.  Happened to me last summer. 

[hueco]

Thanks for all the help. One  more thing. When I first started her up a few times the left bank would have white condensation steam longer than the right bank. Now that I have run the cleaner though her about 200 miles. When I rev her up to about 4000 rpms from idle sitting still. Black smoke comes out of the left bank but not the right. I am going to check every thing else out before I pull carbs.

[hukmut]

IF / WHEN   you decide to pull the carbs, I would,  at that time, also replace the float valves. Your bike is at the age when those tiny springs have seen many gallons of fuel go by and they are tired/ weak.  Might help prevent a hydrolock situation.



See you in Morgantown and ride safe.

[DeShazo]

This guy has a great how to video on rebuilding the carbs on a Valk. He even gives the part number for a Honda OEM carb jet cleaning tool (07JPZ-001010B) that won't damage the jet holes when you ream them out.

https://www.youtube.com/watch?v=eDLTpQCTBsc

https://www.youtube.com/watch?v=J8gXnaJr2J0

https://www.youtube.com/watch?v=yd3TL4yIzl4

https://www.youtube.com/watch?v=7rtNABYbpmk