StromTrooper banner

1 - 17 of 17 Posts

·
Registered
Joined
·
37 Posts
Discussion Starter #1
Ok, I blew it yesterday and ran out of gas. Thought I had enough to get there and did not come close.

I am looking for info on two different issues here regarding mileage:

First, I consistently get at least 200 miles, and up to 225 miles, from a tank of gas. This situation left me dry after about 190 miles. Could be 'cause I was haulin' ass so I can understand a variance in the mileage here. I also have a other than stock rear tire but it has been on for about 6k miles. I know there will be some variance for wear and understand that possibly causing the minor differences seen in mileage. Any other input out there?

Second, since this incident I have fueled up 4 times and only get 100-150 miles from a tank of gas. The first time I filled up after the running out I got 90 miles before the gauge started its blinking. About 120 on each tank after and I took it really easy on the last tank and I am at 140 miles with the light just starting to blink. This is a good bit off the mark as to what I had before.

Anyone had an issue or familiar with what might cause this problem and sudden dron in mileage. I have about 14K miles on the bike and road about 700 miles yesterday so I got a pretty good idea of things in my experience yesterday.

Just a heads up, I rode about 1000 miles the week before and got about 200 miles between fill ups and could have gone a few more miles but I usually don't push it on the highway. Odometer is reasonably accurate, within 3%. Nothing too serious there.

Any ideas or help would be good here. I think I will disconnect the battery for a while to see if that resets anything and makes it better. Thanks for the help.

:? :?: :!: :?
 

·
Registered
Joined
·
213 Posts
Th one time I was pushing it I was also bucking a very big head wind. I ran out when I thought I had about another 15 to 20 miles left. Lesson learned, don't push it and the Stroms are not the most aerodynamic vehicle on the road.
 
M

·
Guest
Joined
·
0 Posts
Assuming that your gauge is working correctly, you are still putting the same amount in when it starts blinking? It almost sounds like you might have a leak. If the bike is running ok and the mileage has suddenly dropped rather dramaticly I would have to think you're losing fuel somewhere. The earliest I've seen mine start blinking is 179. I have a PCIII with the new map loaded and it was very windy during that tank.
 

·
Registered
Joined
·
37 Posts
Discussion Starter #4
Just filled up again this morning. Light started to blink at 140. Put in 4.7 Gallons. This last tank was ridden a bit conservative so I expected better than the other bad ones, but still not even close to where it should be. Now that I am back to town and doing everyday type riding, this next tank will give me better info to make a decision with. I still expect what I have been seeing, a shortage in the mileage area, but I will take a close look for leaks and other signs in the next day or so.

I checked the ODO with mile markers over 100 miles and I consistently put in more than 4 gallons on each fill up so that should verify the amounts used. This still could leave about a 10% variance in mileage for the amount of fuel, but nothing that should account for 50-100 miles?

The early numbers of about 100 miles were with a bit of wind, but what kind of wind cuts mileage in half? That is why I went for a few more tanks to gather a little more data.

I think I will stop by a dealer this week and see if they can check for any codes or check out the ECU.

WIsixfitty: Did you notice anything after you ran out? Anything different?

Keep your ideas coming as I would like to fix this soon. Who can afford to burn extra gas these days?
 

·
Registered
Joined
·
213 Posts
No I did'nt notice anything different after runnig out. fwiw I am on a 650 and the trip mileage at the time was about 240.

I'm just lucky I was about 5 miles from home and my wife was also home at the time. :p
 
B

·
Guest
Joined
·
0 Posts
I ran my 650 out of gas on purpose once just to find out how far you could go with both indicators flashing.

This did not affect my lileage in any way.
 
B

·
Guest
Joined
·
0 Posts
I'd have to look at my notes at home. CB 21.5, Givi bags and aftermarket knuckle gaurds. I never get the mileage some people claim usually about 40-45 MPG US.

If I remember correctly at a conservative 65 mph I ran about 65 miles before going dead.

Becuase it's fuel injection there is NO warning, it just dies.
 

·
Registered
Joined
·
37 Posts
Discussion Starter #9
Here is some info that may help and provide resolution to some of us out there.

After running through about 6 tanks of gas, I am now back to normal as far as mileage. Got 209 miles before the light started blinking and filled up 5 miles later. Took 5.0 gallons so that works out more than 40 mpg and I drove like a sane person most of the time.

This got me to thinking what may have caused the problem and why it would gradually work its way out???

I am guessing here but this may be it. After running out of gas, I used a few used quart size oil bottles to carry the gas I needed back to the bike.

As there is only oil residue and a very small amount of oil left in the bottles, how much harm can that cause. No big deal right?

Well, it is my guess that this small amount of oil MAY HAVE caused a potential problem that affected mileage. As I saw no significant decrease in power, I suspect it had little affect on the actual mechanics of the engine and ignition or spark. I would also rule this out as many bikes burn more oil than I could have got in the fuel without significant problems every day from blow by and sloppy rings.

It could of however had some affect on the catalytic converter or more likely the Oxygen sensor or FI system as it may have sensed some type of foreign material in the fuel or may have made the sensor dirty or make false readings. I would lean in this direction but I do not have any technical data to back that up. I am also not really smart on the FI system but this is my best guess.

If anyone can enlighten me and any others watching this thread please do. Thanks!
 
H

·
Guest
Joined
·
0 Posts
Just a few questions. Gas at the same station? Water in gas? Change stations to recheck a tank. Last service? Old plugs? Air Filter cleaned? Your bike has a lot of miles, valve adjustment? All these things could factor in right? I do know that reving this engine more than 6K and the wind makes a difference. If I keep it under 5500 I do about 45MPG, If 4500 I get above 50MPG. I did go up to a 17 tooth counter shaft sprocket. 4500 is now an indicated 71MPH.

Cheers
Charles
 
T

·
Guest
Joined
·
0 Posts
just had to comment on this. back from my trip with speeds very rarely below 80 and up (indicated). i never got below 52 on the whole trip, nearly 2k miles and my last tank keeping it about 65 cause of rain i got 58! i think mileage in the mid 40's is even unacceptable for this bike...i cant imagine the light going on after 140 miles, mine is usually just coming off the fifth bar at that point.
 

·
Registered
Joined
·
28 Posts
COOLTOY said:
It could of however had some affect on the catalytic converter or more likely the Oxygen sensor or FI system as it may have sensed some type of foreign material in the fuel or may have made the sensor dirty or make false readings. I would lean in this direction but I do not have any technical data to back that up. I am also not really smart on the FI system but this is my best guess.

If anyone can enlighten me and any others watching this thread please do. Thanks!
I thought that you were on the right track that your Oxygen sensor was the cause of your poor mileage but it appears that the V-Strom does not have an O2 sensor (see below). In any case, I doubt that such a very small amount of oil mixed in a tank of gas would be the cause. There are other sensors that could be malfunctioning and causing your mixture to be overly rich and decrease your gas mileage.
 

·
Registered
Joined
·
178 Posts
Thought the 02 sensor was only on European models and not on the US bikes, or did that change in 04 or 05?

Any contaminent in the fuel is going to decrease mileage, burning an oil and gas mixture is not the same as burning gas and some oil as a result of blow by, in the latter the oil burns as a result of the ignition/compression stroke, in the former the engine is trying to ignite a mixture with a much lower burn point. Not to mention the difficulty of an injector trying to met the load of a fuel that doesn't carry the same energy volume per duration of injection.
 

·
Registered
Joined
·
28 Posts
BradM said:
Thought the 02 sensor was only on European models and not on the US bikes, or did that change in 04 or 05?
.
After looking at the online service manual it appears that the early US V-Stroms did NOT have an O2 sensor and I can't find anything that indicates the 04 or 05 models are any different -- so -- bad mileage can't be blamed on a non-existant O2 sensor.
 
D

·
Guest
Joined
·
0 Posts
I tend to get 50 to 52 mpg regardless of if I'm going back and worth to work in city driving or when I'm out on the slab or up in the mountains raising the revs. Last trip thru the mountains running like an eediot, I still got the same mileage. Just my results
 

·
Registered
Joined
·
1,240 Posts
Resurrecting an old thread here:

Because it's fuel injection there is NO warning, it just dies.
Yup that's the truth.
I was on a trip out west and usually started looking for gas at around 200 miles. Once at 222 on the odometer, there was a sign that read: next gas, 64 miles so I pulled in to get gas, but it was an abandoned gas station. Well, at 287.5 it quit. I stopped, put in my one gallon of gas and two miles up the road was the station. Put in an additional 4.8 gallons. 49.5 mpg
The one thing that you can count on is that WIND is your enemy. 41mpg with a strong headwind, 51/53 without. That is loaded for a trip.
 
1 - 17 of 17 Posts
Top