This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

Engine spluttering.

D

danf1234

Took my bike to the MOT test yesterday and when I set off it start juddering and kangeroo-ing (technical term), and the red warning light came on the dash. I assume it had dropped to 1 cylinder.

I stop to the key out of the ignition and put it back in again and it was fine and has been fine ever since.

The only thing different was that I put the baffles back in the bike for the MOT, and it is set up on the power commander to run without baffles.

Do I have a problem?
 
set clocks to diag mode and see if any fault codes have been recorded, see if same fault appears when your race cans are back on.
 
Run the diagnostics and I get fault 50.

Which is:

Starter short circuit / open
starter short circuit with battery +V

Whats all that about then?

Bike starts fine
 
Could be a red herring , as if the starter was "short/open circuit" it quite clearly wouldnt start. Unless it somehow relates to the starter solenoid beginning to fail ?
 
I have just replaced the start solenoid for the Yam one. I did accidently short it when I was unbolting it and got all the sparks etc. But I would I thought that would clear from the memory once OK?????
 
I think there is an amount of memory retention for error codes , so that would explain that then :)

You may find the refitting the original cans csused it to run a bit rich or maybe flood the cylinders a little bit. Unless its doing it constantly I would not get too concerned.
What does it run like with the other ans refitted ?
 
check all your connections bud, the ape's have ***** electrics, dodgy connections can cause all sorts of symptoms,
 
The codes shown on the dash are active codes (since ignition on).
Only the axone can access stored codes on the post 04 bikes.

Pre 04 has no storage memory.

If it doesn't re occur put it down to a gremlin
 
spoonz said:
The codes shown on the dash are active codes (since ignition on).
Only the axone can access stored codes on the post 04 bikes.

Pre 04 has no storage memory.

If it doesn't re occur put it down to a gremlin
Click to expand...

Been out this morning with the bike and it is running sweet as. However the fault has returned. Out of 15 starts today it has reappeared 3 times. Each time when the bike has been stood a while. everytime it dissapears when the key is turned off and back on again.

Help I am getting worried.
 
danf1234 said:
Been out this morning with the bike and it is running sweet as. However the fault has returned. Out of 15 starts today it has reappeared 3 times. Each time when the bike has been stood a while. everytime it dissapears when the key is turned off and back on again.

Help I am getting worried.
Click to expand...

Is it always with error 50 ?
 
I have part way traced it I think.

The fault is induced by the automatic arming of my meta alarm. If I let the alarm arm its self and run the diagnostics it has fault 50. If I start the bike it starts on 1 cylinder.

If I then turn the key off and start it starts on 2 cylinders and has no fault code on the diagnostics.

If I then leave the bike 1 minute and let the alarm rearm it starts on 1 cylinder and shows fault 50.

This is literally every time over 20 starts.

So is the alarm that is playing up?
 
Sounds like it.

Alarms are my pet hate. If it's self armed it shouldn't allow you to start the bike anyway as it would normally cut power to the starting circuit.
 
spoonz said:
Sounds like it.

Alarms are my pet hate. If it's self armed it shouldn't allow you to start the bike anyway as it would normally cut power to the starting circuit.
Click to expand...

I still have to disarm the alarm to allow it to start, but it then starts with the fault. It is as though the auto alarm induces the fault and I then need to turn the key on start then off again to clear it - Wierd?
 
keep your eye on the immobiliser ecu, there a few people inc myself had touble with them too
 
Thats my worry. I rip the alarm off and it is something else, such as the bikes immobiliser.
 
While its only a case of turning the ignition on and then off again, and then start it's no big issue. My worry is that it is the start of things to come.
 
Well got up the this morning and the fault has gone. I can't get the bike to replicate it for love nor money. There just isn't an issue any more.

Explain that then?
 
ditch the alarm hombre!

they are a bloody pain!

the symptoms you describe are all pointing towards the fact that the ECU isnt being asllowed to shut down correctly !
On an Aprilia system theres is a power latch the keeps the ECU active for 8-10 seconds after the igntion is switched off to allow the ecu processors to close down correctly ( like you pc ) if the alarm is activated and or plumbed inb in the incorrect place or goin wrong then these symptoms are quite common!
im guessing your bikes an early 04 frame number ( ZD4RR00003s (or4S)00****) really early??

these are the bikes that had the first gen ECU and some of them werent the best! most of em were replaced cos they would have gone wrong by now, probably no more than a couple of dozen made it to this country to my knowledge!

See you soon dude!

Griffer!
 
Yeah my bike frame number is ZD4RR00003S003014. I hope its not the ECU that is going **** up then?
 

Similar threads

D
Help Please!
Replies
0
Views
2K
Diegosid
D
H
Direct Replacement Fuel Pump for 2003 Mille
Replies
0
Views
460
Honeybunny
H
john0neuk
Help needed I am baffled?
Replies
1
Views
792
john0neuk
john0neuk
Hege
2007 Tuono - DANMOTO Rearsets
Replies
0
Views
709
Hege
Hege
B
New member and soon to be Tuono owner
Replies
23
Views
3K
bluninja
B

New Posts