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Old May 17th 2018, 03:06 AM   #1
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I Ride: '16 Pani R, 1098R Bayliss, KTM1090R.
Pani R refusing to fire up.

Was racing with my '16 pani R last week. Qualifying went well and bike ran without issue. Between quals and race, all that was done was fuel top up.
At race time, engine happy to spin with occasional backfire through exhaust (not airbox like older dukes), but it would not fire.
At track I tried a booster starter and also drained tank and added new/different fuel. No change.

Since getting it into the garage I have checked the following:
1, Fuses - all ok
2, All cable connections ok.
3, Replaced bar switchgear with alternatives to test.
4, Dropped oil - spotless, magnet has zero fragments.
5, Removed vertical plug and checked piston with borescope - plug is wet and has a build up of soft soot, piston crown unmarked and has a thin film
of wet sooty deposits. On the strength of this I have ordered a pair of plugs and will continue on to check front piston with borescope too.
6, Tank venting operating fine with no vacuum or overpressure noticed.
7, Have played with gear shift and clutch during start up in case of intermittent DQS fault.
8, Air filter spotless.
9, Have tried a spare new battery I had available. Spin up is no different and sounds correct rpm. Still to double check integrity of main connection to engine block.

There have been no undue noises during spin up and no faults showing on dash at any time.


I have a spare fuel pump to try when I do the full reassembly, but current unit sounds as expected during start up.
Bike has had 4 trouble free days at track since beginning of the season and no changes were made prior to race day.

While I wait for the plug set arriving, does anyone have any other suggestions?
My team mate suggested sabotage in the race garage, but if so, what could be done easily in a few seconds that I cannot find now?

Last edited by 990Glen; May 17th 2018 at 03:22 AM.
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Old May 17th 2018, 03:13 AM   #2
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Wonder if we have another f*cked inside tank
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Old May 17th 2018, 03:19 AM   #3
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I Ride: '16 Pani R, 1098R Bayliss, KTM1090R.
Maybe. Thanks for that. I have a spare tank.
Will drop that on with my spare pump.
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Old May 17th 2018, 06:42 AM   #4
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Originally Posted by Halo2 View Post
Wonder if we have another f*cked inside tank
You beat me to it. I am being reminded of my troubles exactly.

Glen: if you remove the fuel pump you are able to visually check that fuel line inside the tank.

Good luck!
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Old May 17th 2018, 07:00 AM   #5
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I Ride: '16 Pani R, 1098R Bayliss, KTM1090R.
Did you manage to repair your sheared pipe, or was the tank scrap?
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Old May 17th 2018, 07:41 AM   #6
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I got rejected by a few companies who are otherwise cutting and welding aluminum. They are doing radiators for cars and motorcycles and are reluctant to endeavor into more challenging territories...
A friend and one of his friends have come up with some creative solutions that we are yet to implement and test. I got a spare tank lent by a fellow Panigale rider and I am hoping he doesn't crash this season so there is no hurry for me.

PS: As I was looking for a quick and cheap solution in my first shock I came across a damaged tank that was really cheap. I asked the seller to send me photo of the inside from where the fuel pump is. Guess what: the inside fuel line had clearly been repaired.
+1: Looking for a solution a fellow told me what a hard time some racing team in Austria had had until they found this was their problem.
So it is not uncommon.

Last edited by Snk1199; May 17th 2018 at 07:46 AM.
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Old May 17th 2018, 08:25 AM   #7
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I Ride: '16 Pani R, 1098R Bayliss, KTM1090R.
Thanks for that.
Have just pulled the fuel pump and checked. Pipe has not broken off at least.
Will try and rig something up over the weekend to see if it has any perforations.

Regarding this and the fuel pump start cycle, I remember with my older bikes, the pump
primes at "key on" and cuts out when up to pressure. I cant recall what the pani does.
With the current non starting set up, it carries on whirring away continuously. Is this
correct or is it supposed to cut out once pressurised?
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Old May 17th 2018, 08:40 AM   #8
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Yes the Pani does the same thing as the older bikes with ignition on it primes then once pressurized it turns off.

Originally Posted by 990Glen View Post
Thanks for that.
Have just pulled the fuel pump and checked. Pipe has not broken off at least.
Will try and rig something up over the weekend to see if it has any perforations.

Regarding this and the fuel pump start cycle, I remember with my older bikes, the pump
primes at "key on" and cuts out when up to pressure. I cant recall what the pani does.
With the current non starting set up, it carries on whirring away continuously. Is this
correct or is it supposed to cut out once pressurised?
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Old May 19th 2018, 10:34 AM   #9
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I Ride: '16 Pani R, 1098R Bayliss, KTM1090R.
Well, new plugs and exchange of fuel pump and it fired up first spin.
The fact that the other pump was running continuously but the new one cuts out
after about 3 secs after key on proves tank internal lines are ok and points more
towards the pump being gash or its internal filter being choked up.

Pump was a spare I picked up about 18 months ago for my track tank. I dont know its
history so it may have had a hard life before it came my way. Guess it may pay
to keep an extra in the race spares kit for the future.

Big sigh of relief when it started, as I have 4 days on track in the coming week.
Thanks from The Avidmoto, Snk1199 and able duc
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Old May 19th 2018, 03:09 PM   #10
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Check the internal filter out
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