Go Back   Horizons Unlimited - The HUBB > Technical, Bike forums > BMW Tech
BMW Tech BMW Tech Forum - For Questions specific and of interest to BMW riders only.
Photo by Hendi Kaf, in Cambodia

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


Photo by Hendi Kaf,
in Cambodia



Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 26 Jun 2005
Smellybiker's Avatar
Registered Users
Veteran HUBBer
 
Join Date: Sep 2003
Location: Missing, presumed fed
Posts: 295
Help! Dead F650GS near Fortaleza (Brasil)

Anyone know what this problem is ?

Symptoms began as poor starting & bad idle and have got progressivly worse.

It now has barely runs, backfires, dies below 2000rpm.

I've recently changed the spark plug, fuel filter / pressure regulator & air filter as part of a bloody good service in Buenos Aires.

I suspect its been poisoned by lousy fuel so have drained the tanks, the old gas didn't even SMELL flamable !!! It didn't help, but was a good thing to do.

I'm starting to suspect things like fuel injectors, the injector nozzle and fuel pump, although the fault could be in the ignition system somewhere.

Any help, ideas or suggestions would be very welcome !

------------------
Last seen in S.America, missing presumed fed.
http://worldtour.overpro.co.uk
http://www.motodogging.com
__________________
Missing, presumed fed.
https://youtube.com/@ChileBob
Reply With Quote
  #2  
Old 27 Jun 2005
Grant Johnson's Avatar
HU Founder
Veteran HUBBer
 
Join Date: Dec 1997
Location: BC Canada
Posts: 7,324
Did the problem start shortly after the service, or after filling up a few thousand k after the service?

Still SOUNDS like bad gas - and if it's really bad, clogged the injectors.

I'd concentrate on the fuel system, although it would be nice to know a little more - as above.



------------------
Grant Johnson

Seek, and ye shall find.

------------------------

One world, Two wheels.
www.HorizonsUnlimited.com
__________________
Grant Johnson
Seek, and ye shall find.

------------------------
Inspiring, Informing and Connecting travellers since 1997!
www.HorizonsUnlimited.com
Reply With Quote
  #3  
Old 27 Jun 2005
Smellybiker's Avatar
Registered Users
Veteran HUBBer
 
Join Date: Sep 2003
Location: Missing, presumed fed
Posts: 295
Thanks Grant.

I found the problem, the intake manifold had blown. There was a big U-shaped crack in it.

When the engine was running the vacuum would make a 'flap' open up, letting air in and screwing up the mixture. Scary stuff when it backfired while I was poking around looking for air leaks !

Off to find (or make) a replacement part. Thanks again.

------------------
Last seen in S.America, missing presumed fed.
http://worldtour.overpro.co.uk
http://www.motodogging.com
__________________
Missing, presumed fed.
https://youtube.com/@ChileBob
Reply With Quote
  #4  
Old 27 Jun 2005
Grant Johnson's Avatar
HU Founder
Veteran HUBBer
 
Join Date: Dec 1997
Location: BC Canada
Posts: 7,324
no worries, not that I helped a lot!

Good spotting - leaky intake manifolds can be tricky to spot.

At least I got the mixture/fuel system part right...
__________________
Grant Johnson
Seek, and ye shall find.

------------------------
Inspiring, Informing and Connecting travellers since 1997!
www.HorizonsUnlimited.com
Reply With Quote
  #5  
Old 27 Jun 2005
Smellybiker's Avatar
Registered Users
Veteran HUBBer
 
Join Date: Sep 2003
Location: Missing, presumed fed
Posts: 295
I'd like to claim excellent powers of observation, but alas I cant.

The bike backfired while my face was a few inches from the manifold. The bright flash gave a good clue, as well as scaring the crap out of me. ;-)

Cheers,
Bob
__________________
Missing, presumed fed.
https://youtube.com/@ChileBob
Reply With Quote
  #6  
Old 27 Jun 2005
ozhanu's Avatar
Contributing Member
Veteran HUBBer
 
Join Date: Feb 2005
Location: Izmir, Turkiye
Posts: 794
I had the same problem since a month. Same symptoms (began as poor starting & bad idle and have got progressivly worse / barely runs, backfires, dies below 2000rpm)
And also I've fully serviced 2 weeks ago (hanged the spark plug, fuel filter / pressure regulator & air filter)
Btw I have a 97 make F650.

Thanks for sharing your problem and solution with us, I hope it will help me a lot.

thanks

------------------
ride safely
ozhan u.
www.ozhanu.com/gezi

[This message has been edited by ozhanu (edited 27 June 2005).]
__________________
ozhan u.
website under construction
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 Registered Users and/or Members and 1 guests)
 

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


 
 

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

25 years of HU Events
Be sure to join us for this huge milestone!

ALL Dates subject to change.

2025 Confirmed Events:

Virginia: April 24-27 2025
Queensland is back! May 2-4 2025
Germany Summer: May 29-June 1 2025
CanWest: July 10-13 2025
Switzerland: Date TBC
Ecuador: Date TBC
Romania: Date TBC
Austria: Sept. 11-14
California: September 18-21
France: September 19-21 2025
Germany Autumn: Oct 30-Nov 2 2025

Add yourself to the Updates List for each event!

Questions about an event? Ask here

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...

Adventurous Bikers – We've got all your Hygiene & Protection needs SORTED! Powdered Hair & Body Wash, Moisturising Cream Insect Repellent, and Moisturising Cream Sunscreen SPF50. ESSENTIAL | CONVENIENT | FUNCTIONAL.

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 13:44.