Engine died whilst riding - Triumph Forum: Triumph Rat Motorcycle Forums
Air Cooled Twins Technical Talk Technical Talk for Hinckley Triumph Twins: Bonneville, Bobber, T100, Speedmaster, America, Thruxton, and Scrambler. Sponsored by: triumphtwinpower.com

 3Likes
  • 1 Post By mick 85
  • 1 Post By Baltobonneville
  • 1 Post By Twintorsk
 
LinkBack Thread Tools Display Modes
post #1 of 9 (permalink) Old 08-14-2019, 03:56 AM Thread Starter
Production 125
Main Motorcycle: 2003 Bonneville America
New Member
 
nigelrobin56's Avatar
 
Join Date: Jul 2019
Location: Nyköping, Sweden
Posts: 7
Other Motorcycle: Was Tiger 955i, miss her
Extra Motorcycle: Sprint 1050 ST, sold :-(
Unhappy Engine died whilst riding

America 2003.
Was on the motorway this morning riding to work, speed ca 100km/h in the centre lane in quite heavy traffic and the engine died. Had only done 186 km on a full tank so there should have been plenty of juice left, anyway I turned the tap to reserve, dropped down a gear and the engine fired up again, missed a couple of times, ran a bit rough then suddenly back to normal. Stopped to fill up in case it was a fuel problem, but only manage to get 9 litres in the tank. Motor started ok so I set off to work again, during the rest of the ride there were a couple of times I felt the motor "missing" and stuttering but I got to work ok.

Only bought the bike 6 weeks ago, and have changed the leads and plugs, now wondering about changing the coils as well, although this feels like another type of electrical problem, cut-off switch maybe?

Any one had similar problems? Would appreciate input.
nigelrobin56 is offline  
Sponsored Links
Advertisement
 
post #2 of 9 (permalink) Old 08-14-2019, 04:54 AM
Formula Extreme
Main Motorcycle: Triumph Bonneville SE
Senior Member
 
mick 85's Avatar
 
Join Date: Jan 2016
Location: Portishead, England
Posts: 678
There have been issues with the wiring loom by the headstock as it bends quite sharply there. It seems to cause a similar issue to yours. Plenty of threads on here concerning that and possible fixes.


Sent from my iPhone using Tapatalk
BonnieJon likes this.

Born to be mild
mick 85 is online now  
post #3 of 9 (permalink) Old 08-14-2019, 05:06 AM Thread Starter
Production 125
Main Motorcycle: 2003 Bonneville America
New Member
 
nigelrobin56's Avatar
 
Join Date: Jul 2019
Location: Nyköping, Sweden
Posts: 7
Other Motorcycle: Was Tiger 955i, miss her
Extra Motorcycle: Sprint 1050 ST, sold :-(
Thanks, I'll search through the forums
nigelrobin56 is offline  
 
post #4 of 9 (permalink) Old 08-14-2019, 05:39 AM
Formula Extreme
Main Motorcycle: Triumph Bonneville SE
Senior Member
 
mick 85's Avatar
 
Join Date: Jan 2016
Location: Portishead, England
Posts: 678
mick 85 is online now  
post #5 of 9 (permalink) Old 08-14-2019, 06:34 AM
Production 125
Main Motorcycle: 2018 T120 Bonneville
New Member
 
Faster Pastor's Avatar
 
Join Date: Oct 2013
Location: Jeannette PA
Posts: 8
Nigelrobin56, I suspect that the “secret fuel filter” on your bike is partially to mostly plugged and thus, starving your motor of fuel at highway/motorway speeds. To locate the secret fuel filter, follow the black fuel line from the gas tank to where it attaches to a pipe located between the carburetors. Remove the fuel line at the carburetor end (removal of the fuel tank makes for easier access). Inside the pipe there is a very small, fine mesh cone shaped filter. Fish it out with a hook. It is most likely blocked with very fine black particles that I believed is due to the deterioration of the fuel line. I suggest that you throw the secret fuel filter away and replace the old black rubber/vinyl fuel hose with a new one. After the bike is back together, I would suggest that you turn the fuel petcock on and open the hex head screw at the bottom of the float bowl on each carburetor to check that there is an unimpeded flow of fuel.
Faster Pastor is offline  
post #6 of 9 (permalink) Old 08-14-2019, 08:57 PM
Legend
Main Motorcycle: 2005 Bonneville Blue 790
Senior Member
 
Join Date: Sep 2006
Location: Central Maryland, USA
Posts: 10,164
Other Motorcycle: 1973 CB450, long gone
It could be a lot of things. In my case, similar symptoms were caused by an intermittent, failing ignitor. I found that out by replacing it (with a Procom), not cheap, but easy, but not before I had replaced the ignition coil and the crank position sensor.

The whole episode caused me weeks of downtime, three instances where the motor stopped while I was riding and wouldn't start again, and over $400, still much cheaper than taking it to the dealer would have been.
HayMike likes this.

Marty
2005 Bonneville Blue 790cc, AI removed, Staintunes RC, no snorkel, inlet enlarged, 118/40/NBZT needles/1 shim/3 turns, Ikon 7610s, Ricor Intiminators, Barnett green clutch springs, Michelin Pilot Activs, D9 gauge panel, tachometer.
Baltobonneville is online now  
post #7 of 9 (permalink) Old 08-15-2019, 05:08 AM Thread Starter
Production 125
Main Motorcycle: 2003 Bonneville America
New Member
 
nigelrobin56's Avatar
 
Join Date: Jul 2019
Location: Nyköping, Sweden
Posts: 7
Other Motorcycle: Was Tiger 955i, miss her
Extra Motorcycle: Sprint 1050 ST, sold :-(
Thanks for the input guys, much appreciated, enuff to keep me busy this w/e doing checks before I order the new igniter & coils.
nigelrobin56 is offline  
post #8 of 9 (permalink) Old 08-15-2019, 01:37 PM
Formula Extreme
Main Motorcycle: My old 1967 '500
Senior Member
 
Twintorsk's Avatar
 
Join Date: Jun 2011
Location: Gothenburg sweden
Posts: 942
To make things even worse there are two more filters or screens right before the float valve they are usually clean if you keep the first secret filter in place..
nigelrobin56 likes this.
Twintorsk is offline  
post #9 of 9 (permalink) Old 08-15-2019, 04:45 PM
Site Supporter
SuperSport
Main Motorcycle: '02 Triumph Bonneville
Premium Member
 
LapinAgile's Avatar
 
Join Date: Dec 2011
Location: Green Valley Az. USA
Posts: 1,345
And another early quick check is that the battery cables are tight.

'02 Bonneville - AI removed, 152MJ's, 42's 1.5 turns out, Air Box Gone/Uni Filters, TPS removed/capped, NH Togas, Nology Coil, Hotwire plug wires, TTP SafeStart, TTP Firestarter, D9 Bracket, Pingel petcock, 19 tooth sprocket, Michelin Pilot Actives.
LapinAgile is online now  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options
All posts must adhere to Forum Rules

Register Now



In order to be able to post messages on the Triumph Forum: Triumph Rat Motorcycle Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter your valid email address, that can receive an automated confirmation message. Otherwise, you won't be able to gain full access.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may 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 Off
Pingbacks are Off
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome