Go Back   Horizons Unlimited - The HUBB > Technical, Bike forums > Suzuki Tech
Suzuki Tech Suzuki Tech Forum - For Questions specific and of interest to Suzuki riders only.
Photo by Josephine Flohr, Elephant at Camp, Namibia

I haven't been everywhere...
but it's on my list!


Photo by Josephine Flohr,
Elephant at Camp, Namibia



Like Tree4Likes

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 4 Oct 2013
Registered Users
HUBB regular
 
Join Date: Aug 2013
Location: Victoria, Australia
Posts: 76
DR650 - Safari Tank - Starved of fuel, why?

Howdy. Right so yesterday my bike spluttered cut out on the highway, clearly sounds like it just ran out of fuel. I stop, check my fuel taps are on (which they are), it starts and i ride about 10km and fill up with my riding mates. I have a 30L safari tank, with inline fuel filters, taps on reserve (I always run it on reserve out of habit), at this point the fuel height is AT LEAST an inch above the height of the fuel hose where it turns and goes into the carby.

Next day it happens again, then again 5km down the road, and again, until i make it to a petrol station, fuel up and ride another 100+km with no problem, again it happened when the fuel is about an inch above the hose to the carby. I pulled the hose off the carby and checked each tap was sending fuel. that was fine, maybe SLIGHTLY less when the hose is held at the height of the carby intake.

Now when I first got the tank I wasnt aware of the carby intake/fuel hose height stopping the last bit of fuel from getting in, so on my way back from a trip I ran out of fuel (in my drive way luckily) with not much more than 1-2 inches in each side. On this day I had my girl friend on the back, so was taking it pretty easy. In the last 2 days it has happened at roughly 100km/ph on HWY.

So why now is my fuel running out when I have more in the tank than I used to? Could it be that cruising slower with my GF on the back translates to less fuel flow needed and in that case I was lucky?

I also have a locking cap, which I thought might be the problem as I know they have been known to block air. I took it off and left it only half a turn on after the first time it happened. Still didnt fix my problem as the next day it happened 3 times with the cap only half a turn on.

those who have Safari tanks, how low does your fuel get before you run out?
the bike doesnt have any other issues, like choking or running rough, goes like new, just for some reason I'm not getting fuel in there when it gets low, but not as low as it used to.
Reply With Quote
  #2  
Old 4 Oct 2013
Registered Users
New on the HUBB
 
Join Date: Nov 2012
Location: Kalgoorlie, Western Australia
Posts: 8
Carb inlet filter?

Have you checked the little plastic filter in the carb inlet? I've known similar filters slime up with transparent gunk that's not immediately visible.

Not sure about the Safari, but to get my Acerbis tank to work I had to rotate the carb inlet about 80 degrees anti-clockwise to avoid airlocks. I also run a non-lockable fuel cap with a one-way breather to help maintain fuel pressure when low (blowing up the tank like a balloon via the breather can also help).

Good luck!
Reply With Quote
  #3  
Old 4 Oct 2013
chris's Avatar
Registered Users
Veteran HUBBer
 
Join Date: Jun 2000
Location: GOC
Posts: 3,327
Vacuum? Check the breather of your fuel cap isn't blocked/ covered (tank bag?)

Vapour lock in fuel line?

Spark plug needs replacing?

Air filter blocked?
Reply With Quote
  #4  
Old 4 Oct 2013
Registered Users
HUBB regular
 
Join Date: Jan 2011
Posts: 90
I had exactly the same issue on my DR650 with a Safari tank. It turned out to be nothing to do with the fuel supply. It was a skinny little breather pipe that comes out the back of the carb. Mine got pinched and trapped in my swing arm mount after I gave my wife a lift on the back of the bike.
The bike could do about 5-10 mins max of running and then die like fuel starvation. I just leant on the seat with my chest to compress the rear end and freed the pipe from the suspension. Done.

Tell me I'm wrong!!
__________________
www.wollongongtowoolwich.co.uk
Reply With Quote
  #5  
Old 5 Oct 2013
Registered Users
HUBB regular
 
Join Date: Aug 2013
Location: Victoria, Australia
Posts: 76
@ Chris. The tank/petcock setup is not vacuum operated. Spark plugs do not need replacing or the air filter - The bike goes like a bat out of hades for 100's of KM before I get about an inch from the fuel line/carby intake height. I'm starting to think that this is just the lowest it can go before pressurization is needed, and maybe the first time I ran it lower I was just really lucky.

Actually the first time I ran it low (lower than last this week) I was using the normal Safari tank cap. Now I use the lockable version with tank filter (which I know doesnt create a seal on the top of the tank). So maybe the change in tank cap has made the difference?
Reply With Quote
  #6  
Old 7 Oct 2013
Registered Users
HUBB regular
 
Join Date: Jul 2008
Location: North East Texas
Posts: 58
Turn the carb inlet counter clockwise to about 90 degrees that will let use most of the gas.
Another thing you can do when the gas gets that low. Put the bike on the side stand and the gas will all run to the left side. Close the right petcock and trap the fuel on left side.
Reply With Quote
  #7  
Old 8 Oct 2013
Registered Users
HUBB regular
 
Join Date: Aug 2013
Location: Victoria, Australia
Posts: 76
Yes done all those tricks (except moving the inlet pipe) What my issue is - is that before I could run the bike lower on fuel than I now can. I used to get an 1.5 inches from the bottom before it was all over. Now im over 3 inches from the bottom before im out. Im starting to think the change tank cap, as well as the addition of a tank filter has made the difference, as the new filter means the top doesn't seal (its a bad fit).
Reply With Quote
  #8  
Old 8 Oct 2013
chris's Avatar
Registered Users
Veteran HUBBer
 
Join Date: Jun 2000
Location: GOC
Posts: 3,327
Quote:
Originally Posted by chris View Post
Vacuum? Check the breather of your fuel cap isn't blocked/ covered (tank bag?)
Quote:
Originally Posted by DR650Bandit View Post
@ Chris. The tank/petcock setup is not vacuum operated.
You've misunderstood what I said.

Good luck with sorting your situation.
Reply With Quote
  #9  
Old 10 Oct 2013
Gipper's Avatar
Contributing Member
Veteran HUBBer
 
Join Date: Mar 2004
Location: Saltspring Island,Canada/Poole,UK
Posts: 1,081
DR650Bandit,

The intermittent symptoms you describe are similar to what happens when you have water in your gas tank - are there any blobs down by the petcocks?

if so drain and clean the tank, drain the float, clean out the fuel hoses and filters

If not:

How close does your right side fuel hose get to the exhaust, any chance of a vapour lock from the manifold ?

The BST40 inlet when vertical can cause a vapour lock too with the curve of the hose getting heated up - if you can turn inlet as Bigdon mentions and make sure the fuel hose is straight from the petcock to the inlet with no loop and keep it as cool as possible this might cure the issue. Remember too that as you get to the bottom of the tank the fuel is prone to being warmer - especially if you run slowly in traffic and with high ambient air temperatures - this can also contribute to vapour locks

Just to check, did you remove the small carb inlet fuel filter as AndyBev mentioned - when partially blocked (it blocks up very quickly as it has a small surface area) can cause fuel flow to reduce and this in turn can cause a vapour lock in hand with any of the other factors.

Are you using inline filters, are they clean ? - back flush them, maybe also remove the petcocks and clean them.


The last thing I can think of is the petcock(s) not flowing properly, do you use fuel with ethanol ? this can degrade the petcock o rings and make them stick
The OEM petcocks that come with the Safari tank are not very good and I have had one stick closed in the open position before - avoid using ethanol if possible or use a fuel stabiliser (Sea Foam etc.)

post photos of each side of the bike if possible and lets have a look at the setup.
__________________
Cheers
Grif

'11 KTM 450 EXC
'09 Suzuki DR650
'00 Discovery Series 2 V8
'95 Defender 90 300 Tdi Overlander
http://gipperstravels.blogspot.ca
Reply With Quote
  #10  
Old 10 Oct 2013
Registered Users
HUBB regular
 
Join Date: Aug 2013
Location: Victoria, Australia
Posts: 76
Fuel flows freely on both taps and through the in line filters. The plumbing is pretty similar to the instructions given, only I have shortened the length to the inlet, raising the T closer to the inlet in the process. The fuel pipe is also not close enough for the fuel to be getting too hot.

I did however just check the inlet filter and there was s### in it. I cleaned it out, so hopefully this might be the end of my problem. Agreed about the safari petcocks. I had mine only 3 months before I replaced the rubbers but they are fine now.
Reply With Quote
  #11  
Old 10 Oct 2013
Gipper's Avatar
Contributing Member
Veteran HUBBer
 
Join Date: Mar 2004
Location: Saltspring Island,Canada/Poole,UK
Posts: 1,081
If you are running good in line filters, junk the carb inlet filter.

I got the wrong name for the Safari tank petcocks - its OMG - which must stand for 'Oh My God' these are crap
__________________
Cheers
Grif

'11 KTM 450 EXC
'09 Suzuki DR650
'00 Discovery Series 2 V8
'95 Defender 90 300 Tdi Overlander
http://gipperstravels.blogspot.ca

Last edited by Gipper; 10 Oct 2013 at 20:01.
Reply With Quote
  #12  
Old 11 Oct 2013
Registered Users
HUBB regular
 
Join Date: Jul 2007
Location: Nth Oz
Posts: 27
How did you go with the cleaned out filter?

People have previously reported that additional inline fuel filters prevent fuel flow when it gets low if there is any air inside the filter. Is your filter clear so you can see if there is any air in it?

I have found the Safari supplied petcocks to be OK so far. I think they used to supply plastic type ones but they are now metal ones. Interested to hear from you guys who have petcocks that went bad, what year did you buy the tank from Safari? Maybe it has changed? Mine was mid last year.

Good luck with it.
Reply With Quote
  #13  
Old 11 Oct 2013
Gipper's Avatar
Contributing Member
Veteran HUBBer
 
Join Date: Mar 2004
Location: Saltspring Island,Canada/Poole,UK
Posts: 1,081
mines was bought new in 2010 -the petcock body is metal, the lever is plastic
__________________
Cheers
Grif

'11 KTM 450 EXC
'09 Suzuki DR650
'00 Discovery Series 2 V8
'95 Defender 90 300 Tdi Overlander
http://gipperstravels.blogspot.ca
Reply With Quote
  #14  
Old 13 Oct 2013
Registered Users
HUBB regular
 
Join Date: Aug 2013
Location: Victoria, Australia
Posts: 76
Bought my tank this year. The petcocks are metal, with metal tap. the rubber seals leaked like a sieve after 3 months, like running out, not drips. Safari told me the petcocks are made in europe where the fuel is better quality and doesn't perish the rubber. Anyway long story short they sent me new petcocks with new rubbers, which were apparently made of a different rubber and wouldn't leak. That was 6 months ago and they have been faultless since.

Yes I have had air bubbles in my inline filters, which I also thought may be a problem as the line would suck the air instead of fuel and then trap it in the bend near the inlet. I cleaned the inlet filter and put it all back together. I have not had a chance to run it as I'm prepping the bike for shipment and have drained the tank. I'm not really worried about it. my riding mate has a 20L tank so ill just fill up every time he fills up and we will be fine. However I'll post later if id do find out if my problem is fixed or not.
Reply With Quote
  #15  
Old 13 Oct 2013
Registered Users
HUBB regular
 
Join Date: Aug 2013
Location: Victoria, Australia
Posts: 76
btw ill be shattered if any s### ends up in my carby since I have a
tank cap filter
petcock filter
inline fuel hose filter
and a carby inlet filter!
Surely thats enough to stop any grit
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 Registered Users and/or Members and 1 guests)
 
Thread Tools
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 Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Some Useful Info For DR650 With Safari 30L Tanks Two Moto Kiwis Suzuki Tech 14 3 Sep 2013 15:07
For Sale - Long range Poly Fuel Tank 55Lt (Diesel or petrol) Pumbaa Overland Vehicles and Equipment for Sale / Wanted 1 5 Jun 2012 17:42
F/S KTM exc Aqualine Safari Fuel Tank 23l upto 07 UK jasext TRAVEL Equipment for Sale / Wanted 1 15 Mar 2012 07:41
F800GS .. bad fuel warning .. don't let one tank of bad fuel end your trip _CY_ BMW Tech 4 4 Feb 2012 23:15
Drz 400 safari fuel tank Oo-SEB-oO Suzuki Tech 0 21 Dec 2011 07:32

 
 

Announcements

Thinking about traveling? Not sure about the whole thing? Watch the HU Achievable Dream Video Trailers and then get ALL the information you need to get inspired and learn how to travel anywhere in the world!

Have YOU ever wondered who has ridden around the world? We did too - and now here's the list of Circumnavigators!
Check it out now
, and add your information if we didn't find you.

Next HU Eventscalendar

HU Event and other updates on the HUBB Forum "Traveller's Advisories" thread.
ALL Dates subject to change.

2024:

2025:

  • Queensland is back! Date TBC - May?

Add yourself to the Updates List for each event!

Questions about an event? Ask here

HUBBUK: info

See all event details

 
World's most listened to Adventure Motorbike Show!
Check the RAW segments; Grant, your HU host is on every month!
Episodes below to listen to while you, err, pretend to do something or other...

2020 Edition of Chris Scott's Adventure Motorcycling Handbook.

2020 Edition of Chris Scott's Adventure Motorcycling Handbook.

"Ultimate global guide for red-blooded bikers planning overseas exploration. Covers choice & preparation of best bike, shipping overseas, baggage design, riding techniques, travel health, visas, documentation, safety and useful addresses." Recommended. (Grant)



Ripcord Rescue Travel Insurance.

Ripcord Rescue Travel Insurance™ combines into a single integrated program the best evacuation and rescue with the premier travel insurance coverages designed for adventurers.

Led by special operations veterans, Stanford Medicine affiliated physicians, paramedics and other travel experts, Ripcord is perfect for adventure seekers, climbers, skiers, sports enthusiasts, hunters, international travelers, humanitarian efforts, expeditions and more.

Ripcord travel protection is now available for ALL nationalities, and travel is covered on motorcycles of all sizes!


 

What others say about HU...

"This site is the BIBLE for international bike travelers." Greg, Australia

"Thank you! The web site, The travels, The insight, The inspiration, Everything, just thanks." Colin, UK

"My friend and I are planning a trip from Singapore to England... We found (the HU) site invaluable as an aid to planning and have based a lot of our purchases (bikes, riding gear, etc.) on what we have learned from this site." Phil, Australia

"I for one always had an adventurous spirit, but you and Susan lit the fire for my trip and I'll be forever grateful for what you two do to inspire others to just do it." Brent, USA

"Your website is a mecca of valuable information and the (video) series is informative, entertaining, and inspiring!" Jennifer, Canada

"Your worldwide organisation and events are the Go To places to for all serious touring and aspiring touring bikers." Trevor, South Africa

"This is the answer to all my questions." Haydn, Australia

"Keep going the excellent work you are doing for Horizons Unlimited - I love it!" Thomas, Germany

Lots more comments here!



Five books by Graham Field!

Diaries of a compulsive traveller
by Graham Field
Book, eBook, Audiobook

"A compelling, honest, inspiring and entertaining writing style with a built-in feel-good factor" Get them NOW from the authors' website and Amazon.com, Amazon.ca, Amazon.co.uk.



Back Road Map Books and Backroad GPS Maps for all of Canada - a must have!

New to Horizons Unlimited?

New to motorcycle travelling? New to the HU site? Confused? Too many options? It's really very simple - just 4 easy steps!

Horizons Unlimited was founded in 1997 by Grant and Susan Johnson following their journey around the world on a BMW R80G/S.

Susan and Grant Johnson Read more about Grant & Susan's story

Membership - help keep us going!

Horizons Unlimited is not a big multi-national company, just two people who love motorcycle travel and have grown what started as a hobby in 1997 into a full time job (usually 8-10 hours per day and 7 days a week) and a labour of love. To keep it going and a roof over our heads, we run events all over the world with the help of volunteers; we sell inspirational and informative DVDs; we have a few selected advertisers; and we make a small amount from memberships.

You don't have to be a Member to come to an HU meeting, access the website, or ask questions on the HUBB. What you get for your membership contribution is our sincere gratitude, good karma and knowing that you're helping to keep the motorcycle travel dream alive. Contributing Members and Gold Members do get additional features on the HUBB. Here's a list of all the Member benefits on the HUBB.




All times are GMT +1. The time now is 22:05.