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FJ is running great, but my MPG has been crappy.

Started by E Double, April 15, 2011, 09:49:15 PM

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wakdady

the emulsion tubes were included. it was the keyster kit. i replaced all the bits in there. oddly enough there was one mixture needle missing, so i just used the old one.
it seems to be running alright. no flat spots, no high/low idle. power is linear with no hicups.

although when you really give it the beans as the revs climb, you could feel something happen and then the clutch gives and the revs go up rather quick

but, it smells like shit! kinda like old gas. not unburnt fuel smell when you run rich. but just an overall foul odor to it.
what could that be?

Flying Scotsman

Took a road trip to Indiana Saturday and I got about 5-6mpg better mileage than i see when im on and of the gas.
1984 FJ1100
1985 FJ1100
1990 FJ1200
1999 GP1200 (165 + hp)

carsick

Scott, what do you normally get? I'm guessing it's low from your tales of GPS.

Flying Scotsman

1984 FJ1100
1985 FJ1100
1990 FJ1200
1999 GP1200 (165 + hp)

carsick

Nice, I'll report in when I finish my first tank of this year's gas.

Alf

Have you checked the carb diaphragms? If those are punctured the juice spent is a clear symptom

candieandy

Another option to increase performance and sometimes mileage is to upgrade. an NGk Iridium IX plug makes a big difference.
HAUI

E Double

Those are the plugs I use now. 

I think I'm running a little rich, but I'm not going to be taking it apart for a while, so I'm keeping an eye on my mileage.
There are only two kinds of people who are really fascinating: people who know absolutely everything, and people who know absolutely nothing.
  
    Oscar Wilde

[

E Double

Huzzah! Huzzah!  I was out for a nice ride today.  First tank (I filled up part way into the ride, because I rode to work the previous two days and didn't fill up after) I got 36 mpg.  Second tank was even better, at 37.4 mpg (and that included 15 miles of city traffic).  I doubt the 100 miles I rode after my last fill up home will be as good, because I was in that motor's behind like it owed me money; Every awesome road I was on that normally have a lot of traffic on them on a Saturday was wide open-no po-po, no nothing!  I went 295 miles today through 5 counties in NJ and 2 in PA, and only saw one active patrol car, and that was in New Hope, PA (which is nuts in itself).  All told it was an awesome day! :yahoo:
There are only two kinds of people who are really fascinating: people who know absolutely everything, and people who know absolutely nothing.
  
    Oscar Wilde

[

weymouth399

Those are great rides, lots of Kookalo and no Johnny long arm too screw with you. :yahoo:

Bob W
84 FJ 1100
86 FJ1200
89 FJ1200
5  FJ POWERED race cars
76 LB80 Chappy
93 KX500 ice for sale
00 KX500 ice/dirt
04 KDX220 dirt for sale
04 KX500 ice
08 KLX450 ice/road
72 CT90x2 for sale

carsick

Quote from: weymouth399 on April 30, 2011, 08:01:59 PM
lots of Kookalo and no Johnny long arm to screw with you. :yahoo:
We spell that R-A-L-L-Y.

Dan Filetti

Quote from: E Double on April 30, 2011, 07:58:08 PM
I went 295 miles today through 5 counties in NJ and 2 in PA, and only saw one active patrol car, and that was in New Hope, PA (which is nuts in itself).

No kidding.  I have been to New Hope, [PA] and watched the cops at the edge of town, pull over each of the bikes as they came to town and tested their exhaust sound.  Most bikes, (even some with bone stock exhaust!!) were ticketed.  They are bastards.  I do not go to that ridiculous town anymore.

Dan
Live hardy, or go home. 

E Double

Quote from: Dan Filetti on April 30, 2011, 10:16:43 PM
Quote from: E Double on April 30, 2011, 07:58:08 PM
I went 295 miles today through 5 counties in NJ and 2 in PA, and only saw one active patrol car, and that was in New Hope, PA (which is nuts in itself).

No kidding.  I have been to New Hope, [PA] and watched the cops at the edge of town, pull over each of the bikes as they came to town and tested their exhaust sound.  Most bikes, (even some with bone stock exhaust!!) were ticketed.  They are bastards.  I do not go to that ridiculous town anymore.

Dan


I don't make a habit of riding down the main drag of New Hope; Basically its no less shitty than Seaside Heights and the like, just on the Delaware.  Or (god forbid) South Street in Philly on a weekend night.  There are so many detours in the area right now I just happened to amble on through, pretty much by accident.  I have seen them pulling over bikes from time to time, but typically on the south side of town.  We usually come over from Lambertville and immediately head north on 32, avoiding all of the fools, drunks and babies.
There are only two kinds of people who are really fascinating: people who know absolutely everything, and people who know absolutely nothing.
  
    Oscar Wilde

[

E Double

I'm mad;  apparently gas stations in and around central NJ only stopped using winter blend gas this past week.  Of course I stumbled across a station a few days ago that still had that bullshit.  32 mpg on a tank full of easy riding. :ireful:
There are only two kinds of people who are really fascinating: people who know absolutely everything, and people who know absolutely nothing.
  
    Oscar Wilde

[

Firehawk068

Here in Phoenix we have the "10% Ethanol Blend" all year round............We have bad air pollution problems here.
I do notice a shift in fuel milage between winter months, and summer months, but I don't think it has anything to do with the fuel itself......
My reasoning leads me to believe it has to do with the CV carbs, and the way they meter fuel at different densities.
We have quite a huge shift in air temps between winter and summer.
My '90 has a factory set of carbs that I got from Bob (XJR maybe?), and a Kerker 4-into-1 system.
During the colder months, when the air is more dense, I get around 37-38mpg on an average tank riding around Phoenix.
If I ride up north in the higher altitudes, say 5000+ feet, I get around 42-43. I am guessing that because the air is thinner, it doesn't draw as much fuel as it passes through the carbs.
The same applies during the summer months down here in Phoenix. When the air temps are 100+degrees, I average around 41-42mpg.
Anyway, maybe this isn't exactly how it works, but since I'm using the same fuel all year, it's the best I could come up with. :mail1:

Mileage figures obtained by cruising like a responsible adult...........Mileage may vary with throttle usage, and how much "Kookaloo" is obtained.
Alan H.
Denver, CO
'90 FJ1200