Yamaha Majesty Scooter Forum banner
1 - 17 of 17 Posts

·
Registered
Joined
·
25 Posts
Discussion Starter · #1 ·
I posted this originally on Yahoo! Groups to get some input on the poor gas mileage my Majesty 400 was getting (37 MPG). Practically everyone there had suggested I check my Air Filters and they are DIRTY (FILTHY) :) . I am thinking about using an K&N Universal Air Filter but am looking for others who may have had an alternative to the stock filters.

Modified 15 January:

I replaced my air filters with the stock parts and will measure the gas mileage again. I am planning to re-use the plastic from the old stock filters to see if I can find a cheaper and/or reusable solution to this air filter problem. So far this post has received no replies here on MajestyUSA (but 25 viewings). Is anybody posting anymore? :cry:

John
 

·
Registered
Joined
·
351 Posts
Hi John,

I read the postings on the Yahoo group but didnt pipe in because I hate using the Yahoo format. Also, I have not yet checked my filter and have not looked into any aftermarket filters. My Majesty has 6300 miles on it and runs perfectly so far, but I will check the air filter soon. I average 55 mpg most of the time and I am satisfied with that number.
 

·
Registered
Joined
·
25 Posts
Discussion Starter · #3 ·
:evil:

Well, I ran a tank of gas since changing the filters. I am now getting an improvement to................39 MPG. (a whopping 2 mpg better! :cry: )

Either I have a heavy wrist or my bike is sick. Advice is solicited.

Thanks,

John
 

·
Banned
Joined
·
250 Posts
John, I see you have a Burgman 400 as well as the Majesty. What kind of mileage do you get with the Burgman? The two scooters should be close, but I think the Burgman does get a little better mileage on average.
Did you buy the Majesty new and if so have you had it back to the dealer to have it checked out? Have you had a motorcycle mechanic of any kind check it out?
What kind of riding are you doing? Is it two up? How much wieght does the machine have to pull? How heavy fisted are you with the throttle. What kind of terrain are you riding in? Have you tried different octane gasoline? If you are using premium, switch to regular. Does your gasoline contain any alcohol?

There's lots of reasons why you may not be getting the mileage you expect, but there may also be lots of reasons why you are getting the poor mileage you are.

Dave
 

·
Registered
Joined
·
351 Posts
I finally checked the air filter just behind the exhaust can ... black! But still getting 50+ mpg and runs great. That number sounds really off. I think more details are in order to determine differences with others out there. I think I would run in the 40's if I had more stop and go traffic, but where I live it is pretty much 45-60 average and 70 on the highway. I used to accelerate pretty hard when I first got it, but have tapered off now ... consumption rate seems to stay pretty much the same. That is baffling to me. Also, I have noticed that I get much worse mileage if I have lots of shut downs and start ups in between. I usually like to measure it if I can run the tank dry on the same day. Gas does evaporate although not sure how much it would affect the numbers.
 

·
Registered
Joined
·
15 Posts
Ok just bought a used Majesty and noticed the Air Filter Check Hoses are Nasty - Dark. I will take those ends off and clean the clear area....Is it good to replace that hose or try cleaning up in the hose?

I am scared to see how Nasty the air filters may be..
How much do these air filters run from the dealer?

Thanks,
Rich
 

·
Registered
Joined
·
25 Posts
Discussion Starter · #8 ·
My wife's Burgman gets 59 MPG typically. My old Kymco got between 60 and 70.

The Majesty was bought used with a little over 2000 miles. I am the third owner buying from a private party. I was assured that the oil had been changed but do not have any supporting paperwork. I've been too busy lately to tear it apart. I need to buy the repair manual but I think at 2600 miles I should be getting better mileage. I check the air pressures once a week and use the factory specified pressures.

I just hope its not my riding style. I like the smoothness of this ride but 39 is pretty pitiful for 400cc.

John
 

·
Banned
Joined
·
250 Posts
kb6zmj said:
My wife's Burgman gets 59 MPG typically. My old Kymco got between 60 and 70.

The Majesty was bought used with a little over 2000 miles. I am the third owner buying from a private party. I was assured that the oil had been changed but do not have any supporting paperwork. I've been too busy lately to tear it apart. I need to buy the repair manual but I think at 2600 miles I should be getting better mileage. I check the air pressures once a week and use the factory specified pressures.

I just hope its not my riding style. I like the smoothness of this ride but 39 is pretty pitiful for 400cc.

John
John with the Burgman, is it your wife riding when it gets the ~59 mpg? If so, why don't you and your wife swap machines for a tank full and check mileage. That would give you a far better idea of if it is you or the Majesty. Another idea is to check the odometer on the Majesty against the Burgmans. Perhaps your odometer is way out of whack giving you a false result.

Dave
 

·
Registered
Joined
·
15 Posts
I have a feeling in my dirty and Dusty environment that my Air Filters will get Nasty quickly... Has anyone found any type of serviceable versions available? In my car K&N Filter...I simply clean with garden hose, dry and then spray on a grease type airisole and re-install.

Just curious...
Rich
:?
 

·
Registered
Joined
·
518 Posts
as the majesty's filters are built onto a flat plate, it might be possible to modify the plates to accept a re-useable foam filter element ?

i have not yet looked into this, but will be soon.

jason
 

·
Registered
Joined
·
25 Posts
Discussion Starter · #14 ·
Filled up the Majesty this AM. Now I am registering 49 MPG :) . This is more of what I expected. Was riding with my wife while she was on her Burgman and she noted that I "take off too fast from a stop." :twisted: Donnie at PCP Motorsports had told me that my riding style may have an adverse effect on my fuel economy.

I had to drive more freeways this last week which also may have had a positive effect on my observed fuel economy. I am going lay off the throttle for now and see if i can break the 50 MPG barrier.

Thanks for the tips. I still have my original dirty air filters and will be trying to engineer a cheaper or reusable alternative to the stock paper filters.

John
 

·
Registered
Joined
·
381 Posts
49mpg is decent, compared to your other experience !

I weigh 250# and average right around 50mpg, city or country.

I would also look at reviewing your riding routes, to try and avoid some of that crap...
 

·
Registered
Joined
·
25 Posts
Discussion Starter · #16 ·
I've been getting between 50 and 54 MPG on the last few fill ups. The weather has been better. I am driving more on the freeway too. Maybe it was too cold this winter. It's been pretty cold and wet this winter in Sacramento.

I saw in the Malossi Variator post that a MajestyUSA member was using a foam filter. Does anyone know where to get one?
 

·
Registered
Joined
·
23 Posts
After buying a new set of Yamaha filters, I cut the paper filters out of the old ones and replaced it with Unifoam filter material, which can be obtained at most m/cyle accessory dealers. This requires oiling with a special filter oil. I'm not suggesting anyone should do this mod, but I haven't noticed any lack of performance since doing so and a plug check revealed a normal light tan color, so I'm happy with it. YMMV.

Cheers,

Bob
 
1 - 17 of 17 Posts
Top