New noise - and not in a good way

[Bixxer Bob]

Aye, I won't get to it till next Tuesday at the earliest, got locks to pick tomorrow and a visit to the bank, sister's arriving for the weekend tomorrow night, hospital Monday morning and work Monday afternoon.  It's all go.....

[metalguru]

Bout time you came out of retirement and got a job, might have a quieter life there!!

While you have the sprag out, remove the rollers and give them a rub with some 1200 wet or dry.
Same with the mating surfaces just to eliminate any slippage as the rollers and their mating surfaces become polished with use.

[Bixxer Bob]

Was going to have another go today but got a really awful cold.  The more I think about it the more I suspect a cam has jumped a tooth because it happened on the starter not when the engine was running and putting the plugs back in didn't make any difference to the effort put in by the starter.  The only way (I think) that it could lose compression suddenly in that scenario is a cam shift.

If it is, it's an easy fix, (provided nothing got bent) but I feel lousy today so it's something to look forward to.... 

[Bixxer Bob]

Camshaft, chain and tensioner all good.  Completely baffled as to what's going on with the noise from that area.  Will just start  ignoring it for now.  Tried to start it today, injectors aren't firing.  Last time that happened it was a corrupt map issue so swapped to spare ECU but still the same problem.  Hadn't time to check for MIL codes but I expect to find a crank sensor fault, my logic being the ECU will only signal the injectors to fire at the right crank angle.  If the ECU doesn't know the crank is turning it won't fire them.  I checked the cabling for continuity and volts to the injectors - all good.  One thing I didn't do was momentarily ground the injector output wire (injector in wires are live all the time, the ECU grounds the out wire to fire it) to see if the injector fires so might do that tomorrow.

On the up side,  this all started when I went out to try it after parking it for a month after Scotland.  It could easily have been while I was away.   Getting fed up with it now though.....

[John Stenhouse]

Did it jump a tooth?

[Bixxer Bob]

Not from what I can see.  The marks don't line up perfectly, to get the cam marks exactly in line the crank mark is ever so slightly out, but not a whole tooth out. 

Anyway, a map reload got the injectors working again and it coughed a couple of times this morning, the way an engine does when the fuel just starts to get thorough, but the battery has had enough so it's on charge for now.  Fingers crossed for later.

[Bixxer Bob]

IT LIVES!!!!

With a freshly charged battery and my spare ECU with a clean map and midrange trims, it reluctantly coughed into life.  After a few minutes to warm it up I balanced the TBs - they were way out (how the F**K does that happen.....)  and she's now purring away like there'd never been anything wrong.

The right side of the engine is still a bit noisy but I'm absolutely sure there's nothing wrong in there now, I've had it apart so many times in the last couple of weeks.

So what happened???  My thoughts,  first I broke one of my golden rules about keeping the battery topped up.  It hadn't stood very long since the last charge so though it would be ok.  It turned over happily enough but clearly the voltage was down.  My guess at the noise in the timing chain area was completely wrong (I'd had some noise from there for a while and so assumed this was it coming to  head).  I now think that the change in noise was due to the ECU crying enough and failing to fire the injectors.  (Think back to the old days trying to start a bike when there's no fuel in the carb - the noise and speed it throws over is completely different).  It wasn't till I was pondering over the injectors not working that the lightbulb came on and I thought "Hang on, I've been here before, when the dealer broke it" and from there followed the same recovery path.

As always, I don't mind putting my hand up to getting it wrong initially if it helps someone further down the line.  I make the mistakes so you don't have to    Perhaps I'll put that on my profile 

[Chris Canning]

Don't think it's anything to do with being wrong but as old as the Tiger is it's still pretty modern day with what makes it tick and there so many trees that you end up barking up  anyway glad it's going.  :icon_wink:

[John Stenhouse]

Holy flow chart problem solving batman! Glad you sorted it, now can you pack enough of the tech kit with you to get it across the states in 2016? 

[Sin_Tiger]

Spot the Girly owner, the one with  RSI   

[Bixxer Bob]

Holy flow chart problem solving batman! Glad you sorted it, now can you pack enough of the tech kit with you to get it across the states in 2016? 

Funny you should say that,  I went to France this year with a mini laptop, TuneECU, Tuneboy, Cable and a spare ECU loaded with a clean install of map and trims  .  Then got an effing puncture. 

[Chris Canning]

I was going to say I carry an RAC card but did you see in the Wednesday comic two weeks ago when they were saying they don't work on the Peage because it's private

[Sin_Tiger]

We've had Sod's Law since time immemorial,  more recently Claire's Law and a few others, so no reason we shouldn't get bang up to date with Bixxer's Law 

[John Stenhouse]

Funny you should say that,  I went to France this year with a mini laptop, TuneECU, Tuneboy, Cable and a spare ECU loaded with a clean install of map and trims  .  Then got an effing puncture. 

Great we'll mend the punctures if you take care of the electronic shenanigans! 

[KuzzinKenny]

Funny you should say that,  I went to France this year with a mini laptop, TuneECU, Tuneboy, Cable and a spare ECU loaded with a clean install of map and trims  .  Then got an effing puncture. 

   

Glad to hear shes purrin again 

KK