1995 GL1500 only runs on Right side Cylinders

[oldgoldwingguy]

I have an unusual condition, '95 GL1500, sat for 12 years, I cleaned the fuel tank, replaced the fuel pump and level sender, Rebuilt the carbs,
new battery , plugs, oil. It's weird, she only is running on the right bank, left side has spark, if I drip a little fuel in the carb, it runs on the left.
I have been through the carbs twice, the seem perfect, Im wondering about all these vacuum control valves now, can anything be causing this?
Thanks in advance
Keith

[Rambozo]

Is there any fuel in the carb? Work the throttle and observe the accelerator pump output. My guess would be a problem with the float valve.

[oldgoldwingguy]

Thanks for the reply, Yes both accelerator pump nozzles are squirting fuel.

[terryt]

Hi When you say rebuilt the carbs. was that a complete strip down and the put in a ultra sonic tank to clean it. then check the jets to make sure there clear of any crud

[oldgoldwingguy]

Yes, absolutely . Complete tear down, Ultrasonic clean, all new orings, float needle, and accelerator pump. I've been a Honda Tech since the mid 70s, this one has me stumped. everything points to the carb, a fuel delivery issue, but because of the GL1500 carb and induction system, I'm looking elsewhere also.

[Rambozo]

So it will fire on the left if you actuate the accelerator pump a few times?
But no fuel drawn in through the booster when looking down the carb?
Sure sounds like a blockage of some kind. Not sure where that would take out both the main and idle circuits, yet have fuel in the bowls.

[DenverWinger]

If I'm not mistaken the 1500 carbs only have one accelerator pump on the right side which feeds into both carbs. So the left side carb bowl could be empty, not getting fuel for some reason.

[Swagonmaster]

Make sure to check the vacuum hoses on the intake manifold for leaks. I replaced the timing belts on my bike and after backing the bike out of the garage the engine started running really badly and had no power and I was sure that I had screwed up and one of the belts had jumped and crashed the valves. It was fall so the bike sat in the garage till spring when I decided to find out which bank was kaput and was (much more than) very relieved to realize that it was only a large leak in one of the vacuum hoses and I was able to ride that day.