Author Topic: mystery starting woes....  (Read 345 times)

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March 29, 2020, 05:01:54 PM on

Offline Daiku (OP)

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Greetings from home here in the Blue Ridge Mtn's. of North Carolina.

About 8 weeks ago I changed the oil, cleaned and adjusted the chain, filled the tank with ethanol free premium unleaded (93 octane) and anxiously awaited for the first warmish day to ride.  Once done with the oil change I fired the 06 Tiger up and she, like she always has over the past 20,000 miles, turned right over without a hitch.  I keep her on a battery tender always.  The battery shows over 12.5 volts when tested.

Last Saturday I checked the bike over, geared up, got on the bike and turned the key and while the engine turns over fine I don't seem to be getting spark so it just continues to crank without firing up.  I've checked the kickstand switch (after removing the tank) and it reads .5 ohm resistance with the multimeter.  The multimeter reads .5 ohm when touching the leads to one another, so net zero I presume with regard to the kickstand switch connector up under the tank.    All three coils read .9-1.0 ohm at the plug in connectors with the multimeter (when removed and tested).   I get a OL reading when testing the plug in connectors and the spark plug spring.   After repeated attempts I began to smell fuel so I'm guessing that the throttle bodies are getting fuel.

Any input is much appreciated.

Thank you, mates.
Now:  '06 Girly, '83 Honda CB1100F
Then:  '78 Suzuki GS 750, '79 GS 1100, '01 Yamaha FZ1

March 30, 2020, 06:55:41 AMReply #1 on

Offline Chris Canning

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I stopped leaving a battery on a tender years ago they can be an illusion,put on charge and leave the battery a week and see what you have that’s the reality of the battery condition.

No mention of how old the battery is,I’d try another before you do anything.

March 30, 2020, 06:23:00 PMReply #2 on

Offline Bostedsprocket

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And check the clutch switch and kill switch, did you wash the bike before you put it away? sometimes water sitting somewhere can upset connections, can you hear the fuel pump priming?
If its got titts or wheels it'll give ya trouble!!!

March 31, 2020, 12:03:04 AMReply #3 on

Offline Daiku (OP)

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Fuel pump is firing up upon ignition, noticeably audible.  I bypassed the clutch switch by fusing the two wires as a quick eliminator.  Put a new battery in.  Ignition kill switch seems to be working as it shuts down the lights on the dash upon pressing.  I noticed as I was going through things again tonight after installing the new battery that I"ve got evidence of a small fuel leak in the line from the tank to the fuel rails at each end, particularly noticeable on the tank side. My next step will be to go for a fuel filter/fuel pump and the fuel line to the rails.  I've got 40k on the bike so I believe now is a prime time to do the maintenance whilst I've got it all opened up. 

Thank you for your input, any additional advice is most appreciated.  Spring in the Blue Ridge Mtn's is prime riding season and this is killing me.  I suppose that being under a CV-19 "stay at home" order is a good time to have the problems though.

Now:  '06 Girly, '83 Honda CB1100F
Then:  '78 Suzuki GS 750, '79 GS 1100, '01 Yamaha FZ1

April 01, 2020, 07:23:34 PMReply #4 on

Offline Bostedsprocket

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I think I would be tempted to check if the air idle control valve is working, if you have a spark + fuel the other ingredient you need is oxygen, the aicv controls air flow on tick over if the valve is sticking or not working at all you will have no air flow and thus no fire, with the tank and air box removed you will be able to see the little white plunger in the valve, reconnect the battery and turn on the ignition, the valve will run through a cycle and the plunger will go up and down, if it doesn't its faulty, my aicv valve failed at 40k, infact it simply fell apart, luckily the part is still available from triumph, they do come up second hand on ebay quite often too, best of luck with it and like you say cant really ride it under covid lock down so might as well get it set up and running for when you can.
If its got titts or wheels it'll give ya trouble!!!

April 01, 2020, 09:05:25 PMReply #5 on

Offline Chris Canning

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I have a new one on mine at 43000 but jeez the problem could be anything plus I know it’s the later tiger but is the female fuel connector plastic?

April 01, 2020, 10:56:51 PMReply #6 on

Offline Daiku (OP)

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I'll check out the aicv, hopefully tonight.  Thank you for the tip....this is frustrating as I've always been able to track down issues fairly quickly.  Thanks, Bostedsprocket.  And Chris, the male protuberance from the tank is metal, the fuel line connecting to it is a plastic high pressure fitting connected to the rubber fuel line feeding the fuel rail (with high pressure bands at each end).  I think that as I had the tank sitting over the battery compartment (with the battery removed) for a couple of days whilst I checked electrical connections it may have stressed the connections on each end of the fuel line to the fuel rail.  I've not had any fuel leaks in the past whatsoever.  I'd like to think that I'm not creating more problems in addition to the original problem, but these days it seems up is down and down is up with all that is going on.  Interestingly enough, the fuel line was leaking at both ends, the outlet from the tank and the inlet into the fuel rail after I did the electrical checks, bypassed the clutch switch, and put in the new battery.

It sure would be nice to take a two wheeled therapy ride about now....

Now:  '06 Girly, '83 Honda CB1100F
Then:  '78 Suzuki GS 750, '79 GS 1100, '01 Yamaha FZ1

April 01, 2020, 10:58:26 PMReply #7 on

Offline Daiku (OP)

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Now:  '06 Girly, '83 Honda CB1100F
Then:  '78 Suzuki GS 750, '79 GS 1100, '01 Yamaha FZ1

April 04, 2020, 09:54:43 PMReply #8 on

Offline Ossian

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On mine, the crank position sensor failed during a run, without any warning signs at all. Bike would spin over on the starter, but just wouldn't fire.

April 16, 2020, 12:11:44 AMReply #9 on

Offline Daiku (OP)

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good to know, thank you for sharing that.  I've ordered a fuel filter, fuel pump, and a new high pressure hose from the tank to the fuel rail as mine was leaking following so many tank removals checking things.

I've got spark now but she still just spins over and over.  I am leaning toward a bad fuel line between the tank and the fuel rails. 

We'll see.  I'll report back once I receive the parts and get them installed.

By the way, one of the parts is on back order, a $2.00 "O" ring, so it may be a bit before I get what I need to do the work.

Thank you, again.
Now:  '06 Girly, '83 Honda CB1100F
Then:  '78 Suzuki GS 750, '79 GS 1100, '01 Yamaha FZ1

April 28, 2020, 08:52:35 PMReply #10 on

Offline Daiku (OP)

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UPDATE:

Still waiting on parts from Triumph via BikeBandit.

Crossing fingers that the parts are crossing the Atlantic sometime soon.

Will keep the thread going as I try to resolve the issues with the new parts once they arrive.

Stay well, friends.
Now:  '06 Girly, '83 Honda CB1100F
Then:  '78 Suzuki GS 750, '79 GS 1100, '01 Yamaha FZ1

April 29, 2020, 07:53:16 AMReply #11 on

Offline HockleyBoy

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Hopefully wont be too long, be nice to actually have the parts while you have garage time!
05 Tiger Lucifer Orange (resting) 07 GSX-R1000TT K7 71 Triumph T25T 17 Tiger 1050 Sport

April 30, 2020, 11:34:49 PMReply #12 on

Offline Daiku (OP)

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To be sure, given the state of things I could sure benefit from some two wheeled therapy.... even if it means just working on my motorbike rather than riding it!

Thanks, mate.  Be well.
Now:  '06 Girly, '83 Honda CB1100F
Then:  '78 Suzuki GS 750, '79 GS 1100, '01 Yamaha FZ1

May 01, 2020, 10:50:31 AMReply #13 on

Offline HockleyBoy

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And you,

Hopefully wont be too long before we are all out riding again
05 Tiger Lucifer Orange (resting) 07 GSX-R1000TT K7 71 Triumph T25T 17 Tiger 1050 Sport