Uses too much gas.....

[Jason]

My 1989 Venture Royale seems to be using alot more gas than it should. It seems that I am only getting about 18-20 in town, and 23-25 on the interstate. I dont ride hard, or fast. I have also noticed that even after sitting over night, with cool air temps down in the low 50's to upper 40's I do not have to choke the bike to start it in the mornings. I do not mind not having to choke the bike, but I do want to improve the fuel milage. Any help with this issue would be great. Oh and there is a rattle in the exhaust chamber under the bike. I dont know if that would have any effect on the fuel consumption, but I figured I would include it. Thanks alot!

[CrazyHorse]

Maybe your choke is activated and yoiu dont know it.

[Yammer Dan]

Maybe your choke is activated and yoiu dont know it.

 

How long since you synced the carbs?

 

How long since Sea-Foam?

 

How long since plugs changed?

[Venturous Randy]

Pull the diaphragms out and look for holes and also check to see if the seat where the needle goes into is seated correctly.

Are you sure you are running on all four cylinders? Start it up and let run for 20 or 30 seconds and cut it off and feel of your exhaust header pipes and see if they all are about the same temps.

RandyA

[Freebird]

Are you SURE all the coils, plugs, wires are good? A bad coil can play havoc on your gas mileage and these bikes still run pretty darn good on three cylinders. You may not even notice it unless you are riding hard.

[Jason]

Is there a way to adjust the choke on a 1989 Venture Royale? Seems like it is running partially choked, but choke is all the way off. How can you adjust the choke?

[Dano]

Pull the left side cover off. Look at the rear of the #1 Carb (rear) where the cable hooks up. This is the "choke" cable (actually an enrichment circuit in the carbs, a "choke" is a plate situated over top of the throttle plate designed to increase vacuum in the carb throat and draw more gas in that way). Operate the "choke" lever and watch the action at the carb. The levers operate little "pop-out" buttons on each carb to open the enrichment circuit. After you identify the first button, then look at each carb to make sure they are going all the way back in. It might be possible the linkage is warped and not working properly, allowing one or more of the buttons to remain open.

[Texaskid]

Here is a post by 5 bikes.

 

Improving gas mileage... - VentureRider.Org

[Zfrebird4]

... Thankful that Lonna's Squidley redid the carbs before he sold me my 86. I did have them reset for Co, and now I get between a 42 and as high as 50, ... probably cause I just cruise around easy at my age. LOL

 

JackZ

[bobcat]

Just by the mere fact that you don't have to choke your bike in the morning even if the weather is cold would suggest you're running rich...

 

I would suspect something is amiss with the choke and that's where I'd start..