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More Problems with Aftermarket Float Valves

I get lots of emails like this one:

I purchased four "Napco Carb rebuild Kits" for my GL1100 in addition to some parts from you like plenum seals, etc. I probably should have purchased your Master Kit. Anyway, 2 of the Napco float valves would not seat properly resulting in a lot of frustrating problems. With your recommendation, I cleaned and put the original Honda float valves back into the carbs. Problem Solved. Thanks!

Lee Korb - Raleigh, NC

As you probably know, I'm not a big fan of aftermarket float valves. There have many problems with these in the past. I'm aware af many, many cases of carb problems that were cured by "biting the bullet" and replacing freshly installed aftermarket float valves with the proper OEM item.

An earlier Tech Tip on this subject is here.

Here's a new problem to worry about if your decide to go this route:

Failed Aftermarket Float Valve

Mike Nixon - noted CBX and vintage Honda guru says:

"I don't arbitrarily replace parts, only what is needed. The factory float valves often last longer than the motorcycle. They're also expensive. But, I will not use aftermarket float valves, and here is why. That's chrome plating that is coming off this aftermarket float valve. The factory ones never do that."

The photo speaks for itself. I happen to agree with Mike 100% on this issue. During your rebuild, inspect, clean and re-use the OEM float valves. If you decide that they need replacement for any reason, spring for the OEM float sets.

If you decide to ignore my advice on this topic, consider these risks and the value of your time and energy. Doing a task twice is never fun.

Warning: There are some aftermarket carb kits in the market that insinuate that they include genuine Honda float valve / seat assemblies. This disingenuous claim is highly dubious. Unless you receive these float sets in a sealed Honda package with a Honda part number, you are not being supplied with genuine Honda merchandise.

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