Tiger Miles and C14 Tight Trousers

 The Tiger is healed. I wasn't sure of going off piste with the engineering when I first did it, but trying to keep to Triumph's design demands when they themselves won't support them with parts pushed me over the edge, and I'm glad it did. The how-to is here.

It now starts on the button, idles steadily at 1200RPM (I set it with a spacer nut on the throttle idle bolt on the intake manifold), and has become my go-to ride again. Take out the it-never-worked-right idle control plunger and you've got a functional Triumph 955i motorbike.

The end result? I'm putting miles on the bike again this summer and hope to have it within 5k of the 100k goal before the snows fall. Next year I'll go over the top.

Many miles in many weathers on and off road. The Tiger's solid... which prompted me to put the Concours 14 up for sale. I got a couple of nibbles but wasn't feeling it so I took it down again. Why sell the Connie? It costs twice what the Tiger does in insurance each year and is half as comfortable (I've never been able to make it fit me right). My better half and I went out to Stratford for a play and it was rock solid.

When you have the hardware, you can show up in Stratford for a play dressed like a biker and turn into a well dressed theatre goer in moments!

... and yet we both got off it after a couple of hours of riding limping. It's a younger person's machine and I think it's time to let it go. Considering I stepped from a Fireblade to the C14, the next step is likely to be a (frickin?) Gold Wing, but that's me aging gracefully. The combo in the garage is more likely to be the Tiger and some godforsaken recovery project I'm neck deep into figure out rather than the Tiger and a cruiser.

While in Stratford we stopped by Perth County Moto's Bike Night. The new location has piles of parking and the new store is enormous! Well worth a trip out, and we've proven that you can rock up to a play and transform into theatre goers when you've got a top box and two panniers.

A brilliant trip to Stratford has left the C14 is hanging by a thread. Being a competent sports tourer with hyper-ballistic skills isn't enough anymore. 

PCM's new (to us) digs impressed.

When I look in the garage, this is the one that still gets my attention. Sell the C14 and find the guy selling the 955i Tiger in Windsor last year for parts and see if he still has it?

Tiger Mileage and an Atmospheric Ride

Most recent mileage data: 378kms using 19.5 litres of gas, which is 5.16 litres/100kms or 45.6mpg. The Tiger typically returned just over 50mpg before, so I'm seeing a minor hit in mileage. Triumph claimed it'd get 43mpg, so I'm close to that. Perhaps previously I wasn't wringing it out like I am now that it's healed.

Took it out for a ride on a June Saturday when it was supposed to get very hot. Instead it got very pop up rain stormy and I ended up cold. Love riding in the rain though, it consumes all of my attention...

No issues in the rain and I can live with a small mileage cut, though I'm still not convinced this fix has one. Perplexity agrees with me. 160kms in the rain and the bike purred like a kitten.

Tiger Test Ride(s)

 The Tiger rode like it has never had any fueling problems after I hacked the idle control system last time. Idle control is a common problem on 955i Triumphs and I've spent years trying to get mine back into spec even as finding parts for them gets more difficult. Turns out the solution is to remove it.

Ride #2: 40 minutes locally

Second ride this week and the bike idles rock steady and is as smooth as it has ever been, and the backfiring that had been getting worse is completely gone. Today it started on the button, ran from cold with no issues and took me on a 40 minute ride without a hiccup.

We live in an overcrowded little town now thanks to Southern Ontario swelling in size post COVID, so I took the Tiger through a lot of stop-start traffic to see if I could get it to hiccup, but it wouldn't! Makes me want to move more than ever though.

No problems on the back roads.

Pickup up from stops, no problem. Cornering roll on throttle? Smooth as butter. Idle never wavers and I'd forgotten how much fun to chuck around the Tiger is...

So if you're having never ending headaches with your Triumph 955i idle control system, yank the damned thing! Modulating the idle through varying the vacuum between the intake manifold and the airbox (the servo moves up and down revealing the vacuum passages for the three throttle bodies) serves some purpose (perhaps emissions?), but at this point in the bike's life at over 90k and 22 years in, removing the lot and connecting the intake vacuum lines together offers a viable fix for what may be one of the last of these bikes on the road in Canada. I'd be willing to play Top Trumps with any other 955is on mileage too.

Ride #3: Going Long

The next run was a 275 km run up to Georgian Bay to look at a blue horizon. These days it's also a reason to get out of our increasingly overcrowded and traffic jammy town.

The first 45 minutes are straight lining through farm desert, but the geography starts to get some character once you get into the Niagara Escarpment in the Gray Highlands. I didn't throw the 360 camera on until we got to the less tedious bits.

At just under half a tank the Tiger took me 140 kms and two stops to a fuel stop between Blue Mountain and the big water. It was still showing most of the red on the fuel gauge and took less than 17 litres (it's a 24 litre tank), suggesting that this mod isn't hurting mileage.

After the fill up it was some twisty bits over to Creemore for a bite and then the long haul back through farm desert (with its big, juicy flies) and then lines of traffic to get back to my driveway. Through it all the Tiger was mighty.

Flesherton to Thornbury through Beaver Valley (41kms)

Thornbury Harbour to Creemore Brewery (77 kms)

Thornbury Harbour!

Just past the scenic caves on Blue Mountain.

Creemore for a late lunch.

Steady 100km/hr sections, twisties, as big an altitude change as you can find in Southern Ontario and we never missed a beat. Left at 10am, got home just past 4pm, multiple stops, always started on the button whether cold, hot, or somewhere in between.Temp was mid-teens leaving and mid-twenties returning.

It's been a while since you've heard this on here, but I'm a happy Tiger owner.

1) Bin 2, 3 and 4
2) Remove the top of the servo (1) and leave it plugged in but detached from the airbox.
3) Block off the hole in the bottom of the airbox left by the removed idle control stuff..
4) Plumb the three vacuum lines out of the throttle bodies into each other through a T-junction.

Bob's your uncle! No promises, but it did the trick for me.

Triumph 955i Stalling Issues.... Fixed!?!

 Facebook slapped me in the face with this this morning:

...so I went on a mission.

I pulled the tank (for the millionth time?) and set up the 955i Triumph Tiger so I could try many different things to test if the idle was working. Previously I'd followed the manual, but no longer!

I did the usual checks for vacuum leaks and I continue to suspect the overly complicated and no longer supported idle control system. After trying everything I'd tried before, I decided to go OFF BOOK.

If I can't fix this @*&%ing thing perhaps I can hack it! With the bike in test mode (plugged in and ready to run with all sensors attached), now is the moment to try some alternatives, so I pulled the entire idle control system and tried variations without it.

I plugged the servo back in because I figured leaving it unplugged might piss off the computer. I also removed the end of the servo so it wouldn't interfere with the airbox and then blocked off the airbox with Gorilla Tape.

I'd also done my due diligence by balancing the throttle bodies and making sure everything else was plugged in as normal. I also reflashed the computer through Tuneboy with the South African map I found a few years ago.

 So what happens when you remove the entire (problematic) idle control system in a Triumph 955i engine and simply connect the vacuum tubes out of the throttle body to each other?

Well, it seems to have fixed everything. The bike idles right where the computer sets it, the backfiring problem is gone and the motor fuels smoothly (though this is probably in large part due to that fantastic South African fuel map). Best of all, no more stalling.

That's the work around. I got some silicon tubing from Amazon along with some T connectors (maybe $30 all in?). The last round of Triumph replacement parts cost me north of $200 and when I had to start buying used parts (because Triumph has stopped supporting their own bikes) and getting them shipped over to Canada it cost even more... but this hack is thirty bucks in parts and I also have a pile of unused silicon tubing and T connectors left over. I attached the silicon hoses to the T connector and then into each of the throttle bodies, so it's a closed loop with no chance of leaks.

In the pic you can see the idle control servo (black object above the intakes on the left side). That's what it looks like with the plunger removed. It still moves up and down but has nothing to do with moderating vacuum between the airbox and the throttle bodies which is what has caused me years of headaches.

I'm so jumpy about the motor falling through idle and stalling (it's a perilous place to be when you're on the road on a bike that keeps cutting out), but this hack hasn't just solved the idle problem, it has also resolved all of the other issues. The bike idles steady right where I set it in Tuneboy, but more surprising is that the backfiring that had crept in is completely gone. The bike feels tight, full powered and like it did years ago. My only thought now is that it might hurt the gas mileage, but I'll keep an eye on that as I get some miles under me this summer.

It still starts like normal. I'm occasionally getting a high idle (3-4 thousand RPM), but as I rode it that happened less - like the computer was figuring out the new normal. I'm curious to see if not having that system in affects cold starting but that's not going to be an issue for the next four months, and I don't mind being my own choke if it means a steady idle.

Tiger Success (!) and first ride of 2025

 Last fall I took the fuel injection apart on the 2003 Triumph Tiger 955i. It wasn't fueling properly and was unrideable. I barely got any mileage on it last season, so I replaced every o-ring in the system and got a new fuel pump for it. It also got new throttle and clutch cables last year. If this last hail Mary attempt to resolve the atrocious fuel injection on this old bike didn't work, it was out the door.

The good news is it fuels nicely again for the first time in a year! I've still got to tune it and get the idle right, but it feels fantastic. Look back over the posts in December and earlier to see the details and where to get parts. If you're trying to keep an old Triumph 955i on the road (Triumph doesn't support them with parts any more), try this, it seems to work!

Battery needed a kick, but once charged up it ran like a top.

The clawed hands of winter still twist into the sky.

First chance to try out a new Shark helmet. My first and I'm not disappointed.

Still got snow on the borders.

The Grand River is swollen by the spring runoff - that's the camp ground underwater on the other side.

That grin is involuntary. The first time you lean into a corner after a long winter on four wheels is magical.

Amy knows how it feels...

Nice to have one road worthy. The C14 valve job continues when I have time, but work has picked up and I'm travelling again, so my weekends are seldom my own.

Here is the radiator loosened so I could get to the front cam sensor to change the o-ring. The Murph's Kit came with an oversized one. That was 40 minutes of sweat and swearing before I gave up and stepped away (again). This was a giant time suck at a time when I don't have a lot of... time.