Technical / Diagnostic Help Request

Hey,

My 12' Street Triple is very unwell and I'm all out of ideas as to what might be wrong :-(
Bike only has just over 6,000 miles on it, and it lives in a garage.

Problem description:
Was running fine, then squirted it with a pressure washer (not smart I know #shame). Then it intermittently seemed to drop a cylinder, then dropped two, then all.
turns over fine, but doesn't even try and fire most of the time, occasionally sounds like one cylinder tries to fire but that's not enough to run on its own and then it reverts back to not firing.

Diagnostics I have done:

1. Fault Codes (dealerTool): None.
2. Spark test, All - I get a spark ( Coil lent against the frame with the plug in, turn over can see the spark and looks strong)
3. Fuel Delivery system - total disassembly (minus fuel pump/filter) and check all is good - Dealer tool reports injectors pulsing - all pinout tests - all report good ( Can't test if the injectors are blocked, but all 3 at the same time seems unlikely) - Used the pump test to empty the tank, and fuel quality and flow rate were good.
4. Air - I gots air.
5. Main ground point in the centre of the bike to the frame looked ok, but cleaned/decreased and tightened, same with battery terminals.
6. Used DealerTool to look at sensor values etc.
   1. Throttle position sensor = good
   2. MAP = good,
   3. Fall detection switch = good
   4. Side stand switch = good
   5. Clutch switch = Good
   6. Throttle balance shows good pressure and balanced
   7. O2 = Good
   8. Secondary Air Injection = Good
   9. Timing etc = good.
7. As the Injectors are pulsed, ASSUME that the crank position sensor is good
8. All Fuses are good, connections cleaned.

So, I'm out of ideas of what else it could be, and very much open to suggestions

 

Yea just about.

 

Oh how I wish for that to be the case, but its been siting in my garage in various states of reconstruction for about a month now, and the issue persists.

 

unfortunately as I've had all t he plugs out, this isn't the case.

 

I agree its defiantly electrical, and a sensor of some description is playing up, the difficult part is trying to identify which one. I'm certainly no mechanic, so operating in the dark so to speak.

I shall endeavour to identify sensors involved in the starting of the bike and try to test them. MAP and MAF should be next on the list!

thanks for your suggestions

 

I agree its defiantly electrical, and a sensor of some description is playing up, the difficult part is trying to identify which one. I'm certainly no mechanic, so operating in the dark so to speak.

I shall endeavour to identify sensors involved in the starting of the bike and try to test them. MAP and MAF should be next on the list!

thanks for your suggestions

 

I'm fairly certain that there is no water in the fuel, but as I've yet to inspect the pump and filter I shall be draining the tank completely which should eliminate this from the equation

The rest of the fuel delivery system, line to rail, rail, breather tubes and injectors have been disassembled for inspection for blockages and pin-out test and are all good.

I've done checks on the plugs and coils, and have visually seen the spark, which looks strong - Triumph did a good job wiring my bike it seems, so it isn't possible to get the coils in the wrong order, without hacking up the wiring in a very obvious way, so I'm happy that the order isn't the issue.

WD40 on suspect wiring is a good shout, as is the can of easy start (couldn't hurt!)

Thanks for the suggestions/input

 

yup, sure have bud

 

To quote from the manual:
"Fuel pressure is controlled by a regulator also situated inside the fuel tank."

The fuel pump makes all the right noises, and flow was good when I used it to empty tank, although I have no basis of reference as far as the pressure goes hehe.

 

Right -O chaps and Chapesses I have finally found out what issue was!


After a complete disassembly and reassembly, and a worn-out battery on my multimeter and some sore fingers later, it was...... water in the gas tank