Popping during deceleration

[Midas]

Bike is a '97 Goldwing 1500 SE.
During deceleration I get a lot of popping.
I am thinking that it is the vacuum lines sucking air and in spring am going to have them all replaced.
Just curious if anything else might be doing/aiding this.
TIA

[WingAdmin]

That's a pretty universal sign of a lean condition - although it can have other causes, the most usual one is lean mixture. And you're correct, leaky vacuum tubing can cause lean mixtures (too much air getting in, not enough fuel). However you should also consider anything else that could cause lean mixtures - clogged jets, restricted fuel flow, and so on.

Measure the temperature of your exhaust pipes using a digital IR thermometer. When well-warmed up and under load, you should be seeing around 700 degrees. If it's much hotter, and particularly if it's glowing, it's pretty much confirmation that your mixture is too lean.

[Midas]

Thanks WingAdmin for the reply.
I feel that the vacuum lines propbably need replacing from age alone, so am having that done in the spring. If it continues I will try what you said.
The carbs were rebuilt about 3000 miles ago with new jets etc. and I use Seafoam periodically to keep things flowing.
Will have to wait and see after the tube replacement.
Thanks again.