ADVrider

Go Back   ADVrider > Bikes > Thumpers
User Name
Password
Register Inmates Photos Site Rules Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
Old Today, 04:21 AM   #1
Hedonist222 OP
Gnarly Adventurer
 
Hedonist222's Avatar
 
Joined: Jul 2014
Location: Dubai, United Arab Emirates
Oddometer: 137
Eh? 500 EXC - fuel finishing way too quickly!

So the past few rides I've noticed my 2015 500 EXC fuel depleting like hell.

I go riding with a friend who has the same bike (well mine is the 6 days but they're the same).

when we stop to rest, I like to take a gander at his tank and compare it to mine.

Always its been the same.

Except the first time I noticed the fuel issue.

At halfway through the ride (60km) I checked when we stopped to rest and we had the same amount.

Upon returning, mine was almost empty whereas he had singnificantly more.

Lets say I had about 1.5 liters left (from the 9 liter tank) and he had at least 6 liters.

Then it happened again.

This time it happened bad.

the first three times we were doing canyons and mountains.

The most recent time, we did sand dunes.

15 km into the ride, just 15km!
My tank was completely empty.

I've ridden dunes before and done up to 90km and still returned with plenty of fuel.

Whats going on?

Theres no leak, I would've noticed.

thanks!
__________________
My rides:
KTM 500 EXC 6 Days - 2015
Pair of human legs
Hedonist222 is online now   Reply With Quote
Old Today, 05:12 AM   #2
AustinJake
TE450-KLE-FXDWG
 
AustinJake's Avatar
 
Joined: Aug 2010
Location: Austin, TX
Oddometer: 3,713
Quote:
Originally Posted by Hedonist222 View Post

The most recent time, we did sand dunes.

15 km into the ride, just 15km!
My tank was completely empty.

I've ridden dunes before and done up to 90km and still returned with plenty of fuel.

Whats going on?

Theres no leak, I would've noticed.

thanks!
You used 2.3 gallons in 10 miles? Impossible to burn that much fuel in that short a distance....you have a leak.
__________________
____________________________________
Get fit. Stay safe. Enjoy life. Learn something to help someone in need.
AustinJake is offline   Reply With Quote
Old Today, 05:28 AM   #3
roadrider18
Studly Adventurer
 
roadrider18's Avatar
 
Joined: Jun 2013
Location: NC, USA
Oddometer: 502
Agreed...has to be a leak.

Near impossible for the ECU to meter that much fuel through the injector. And if such were possible, the engine would likely not run due to a grossly out of fuel/air mixture/ratio. And if you could meter that much fuel, you would a tremendous amount of unburnt fuel purged from the cylinder and most likely detonation of same in the exhaust system.

I'd start looking for evidence of a fuel leak. With the sand and "moon dust" in your location, the dust will stick to any leaking fuel and be clearly visible.
__________________
If I can't be a good example, than I'll just have to be a horrible WARNING!!!
roadrider18 is offline   Reply With Quote
Old Today, 05:38 AM   #4
Hedonist222 OP
Gnarly Adventurer
 
Hedonist222's Avatar
 
Joined: Jul 2014
Location: Dubai, United Arab Emirates
Oddometer: 137
Quote:
Originally Posted by AustinJake View Post
You used 2.3 gallons in 10 miles? Impossible to burn that much fuel in that short a distance....you have a leak.


Quote:
Originally Posted by roadrider18 View Post
Agreed...has to be a leak.

Near impossible for the ECU to meter that much fuel through the injector. And if such were possible, the engine would likely not run due to a grossly out of fuel/air mixture/ratio. And if you could meter that much fuel, you would a tremendous amount of unburnt fuel purged from the cylinder and most likely detonation of same in the exhaust system.

I'd start looking for evidence of a fuel leak. With the sand and "moon dust" in your location, the dust will stick to any leaking fuel and be clearly visible.
Yep.
2.3 gallons in 10 miles.

I checked the odometer before the ride & when it finished.
Time was about 30 mins.

I'll take a look at.

But where would it likely be leaking from?

And what would cause it?

But I'm certain I didn't see a puddle of fuel...
__________________
My rides:
KTM 500 EXC 6 Days - 2015
Pair of human legs
Hedonist222 is online now   Reply With Quote
Old Today, 06:09 AM   #5
roadrider18
Studly Adventurer
 
roadrider18's Avatar
 
Joined: Jun 2013
Location: NC, USA
Oddometer: 502
If yo don't see a heavier accumulation of dust on/around/under your tank and fuel lines compared to rest of dust accumulation...

...then obtain some fluorescent/UV fuel dye.

Such as this product:

http://www.oreillyauto.com/site/c/de...1786&ppt=C0050

NOTE: use the dye VERY VERY sparingly; only enough to barely tint the fuel. Use too much and you will discolor your tank!

Follow the instructions, you will very easily and quickly find your leak.
__________________
If I can't be a good example, than I'll just have to be a horrible WARNING!!!
roadrider18 is offline   Reply With Quote
Old Today, 06:14 AM   #6
roadrider18
Studly Adventurer
 
roadrider18's Avatar
 
Joined: Jun 2013
Location: NC, USA
Oddometer: 502
Quote:
Originally Posted by Hedonist222 View Post
But I'm certain I didn't see a puddle of fuel...
Leak may only be occurring when fuel pump is energized.

I would tend to agree. If the scoot's engine is running and on the side stand, I would expect to see a large puddle of fuel accumulating under the scoot.

But, once again, it is simply impossible to meter that much fuel in such a short period of time through the injector of this scoot.
__________________
If I can't be a good example, than I'll just have to be a horrible WARNING!!!
roadrider18 is offline   Reply With Quote
Old Today, 11:03 AM   #7
Assfault
Exposed Member
 
Assfault's Avatar
 
Joined: Sep 2007
Location: RockyMountains
Oddometer: 2,119
You would think you could smell it also if leaking. Every time I've had a fuel leak I could smell it when riding even.


Sent from my iPad using Tapatalk
__________________
* Assfault, Ass-Fault, Ms Ass, thier neighbors or friends, are not responsible for any incidents, accidents, or accusations, that might result from you using this forum in the pursuit of adventure greatness. Avoid taking ADV before bed time. Do not use if you experince faintness, dizzniess, inversness, difficulty urinating or an erection lasting longer than 4 hours. Thank you*
Assfault is online now   Reply With Quote
Old Today, 06:38 PM   #8
Racerman27410
Gnarly Adventurer
 
Racerman27410's Avatar
 
Joined: Jun 2008
Location: Greensboro NC
Oddometer: 425
Quote:
Originally Posted by Hedonist222 View Post
Yep.
2.3 gallons in 10 miles.

I checked the odometer before the ride & when it finished.
Time was about 30 mins.

.

Are you sure you filled the tank before the ride?
Racerman27410 is offline   Reply With Quote
Old Today, 07:30 PM   #9
Velociraptor
TrackBum
 
Joined: Apr 2005
Location: Seattle
Oddometer: 1,080
Sometimes the small rubber o-ring seal on the quick disconnect can leak under pressure. Turn the ignition on and check that connection for leaks. Also could be an injector stuck open.
__________________
2014 KTM EXC 500
2014 KTM 1290 Superduke R
2009 KTM 690r Enduro SOLD
2002 RC51 SOLD
2010 KTM 990 Supermoto R SOLD
Velociraptor is offline   Reply With Quote
Reply

Share

Thread Tools Search this Thread
Search this Thread:

.
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump


Times are GMT -7.   It's 08:52 PM.


Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright ADVrider 2011-2014