Versys 1000 Forum

Versys 1000 => General Maintenance, Servicing, and Mechanical issues => Topic started by: Floydsz1 on April 21, 2019, 09:48:56 AM

Title: Misfire
Post by: Floydsz1 on April 21, 2019, 09:48:56 AM
First proper run out yesterday since last year. Filled tank up then after about 5 miles i opened it up and it started misfiring, felt like a couple of plugs went down, but once over 2,500 revs it was fine, didn't do it all the time but most of the time, occasionally around 5,000 rpm when opening the throttle it would do it again, did 130 miles yesterday so it goes as it should apart from the misfire.
If it was carburettor I'd say it was a blocked pilot jet (very similar symptoms).
When starting the engine for the first couple of seconds it doesn't run on all 4 but as it's only a few seconds I can't tell which.
Possibly bad fuel, so I've just drained it all out and will go get some more from another petrol station ,
Or maybe a plug, (2015 model , 9,500 miles original plugs).
Just wondered if anyone else had similar trouble.
I'll sort it out ok but obviously checking the easy things first, ( fuel)
Then probably put new plugs in it.
Title: Re: Misfire
Post by: TYKE on April 21, 2019, 10:13:25 AM
Just a thought Peter, I don't suppose the tank cap vent  is blocked or trapped pipe  :question:   
Title: Re: Misfire
Post by: Floydsz1 on April 21, 2019, 10:17:31 AM
thought that rog but I've never had the tank off, just had it running on my workbench with the cap open and it still misfires on start up.
when riding it , it goes as it should ( 100mph etc)  , its just that initial opening of the throttle.
and no I didn't put diesel in it when I fuelled up.
Title: Re: Misfire
Post by: Vern on April 21, 2019, 10:17:51 AM
Hi Floyd,

Could it be that some dampness has crept into the HT side and causing electrical tracking until the rev's pick-up, then clears as component warm; only to return once the bike cools?

The 'winter' storage problem my bike suffered was moisture that turned to rust on the oil pressure switch connection underneath bike.
On my first ride out everything was fine until I was waiting in traffic with the bile idling. I looked at the dash when the red alert light came on along with the small oil can symbol. Cleared as the rpm was lifted to 1500.
Thankfully as mentioned it was moisture behind the rubber boot that covered the connection to the oil switch, which has turned to rust that caused a minor short circuit.

Could the same have happened to the spark plug HT connections?

Regards Vern
Title: Re: Misfire
Post by: Floydsz1 on April 21, 2019, 10:27:45 AM
it does sound like those symptoms vern, its kept in a nice dry and warmish workshop along with my other bikes so I wouldn't expect it to be damp, i'll check the ht connections anyhow, suppose when I've lifted the tank I might as well put new plugs in it,
Title: Re: Misfire
Post by: TYKE on April 21, 2019, 10:47:53 AM
I don't suppose there is any chance of a small rodent making a home in the exhaust

Seems as if it's related to the bike standing unused for some time 
Title: Re: Misfire
Post by: Floydsz1 on April 21, 2019, 11:17:15 AM
id thought of that as well rog but I used it a couple of weeks ago when I went round to my mates to build his gt750 motor, was about 10 mile round trip, and all was fine and I do start it up during the winter from time to time.
just back with some new fuel so once I've had my bacon butty ill give it a try.

it just seamed a coincidence as it was just after id refuelled,
but it does feel electrical.
Title: Re: Misfire
Post by: TYKE on April 21, 2019, 12:26:50 PM
*Originally Posted by Floydsz1 [+]
id thought of that as well rog but I used it a couple of weeks ago when I went round to my mates to build his gt750 motor, was about 10 mile round trip, and all was fine and I do start it up during the winter from time to time.
just back with some new fuel so once I've had my bacon butty ill give it a try.

it just seamed a coincidence as it was just after id refuelled,
but it does feel electrical.

silly question maybe.... but was the fuel you used to initially refill clean  :question:   
Title: Re: Misfire
Post by: Floydsz1 on April 21, 2019, 12:40:02 PM
*Originally Posted by TYKE [+]
silly question maybe.... but was the fuel you used to initially refill clean  :question:
fuel looked ok, it was from the local eurogarage down the road.
anyhow, just put a fresh gallon in from another fuel station and its just the same on tick over, I've not been out on it yet but I've not cured it.
cant tell which cylinders not running correctly because they all warm up to quick but it is running on all 4.
think its going to be a tank off job and check all the connections etc. don't suppose there's any way of getting any fault codes up on the dash is there, there's nothing flashing on the dash so it wont show any fault codes because I presume it thinks everything is ok.
Title: Re: Misfire
Post by: Tiggadave on April 21, 2019, 01:27:22 PM
Maybe you have got some water in the tank? Try some Seafoam or similar fuel condiditioner in the fuel. I had a Tiger that was running rough, and running Seafoam in the fuel improved matters.

Cheers,

Dave
Title: Re: Misfire
Post by: Floydsz1 on April 21, 2019, 01:43:04 PM
ill give it a try dave, thanks.
Title: Re: Misfire
Post by: TYKE on April 21, 2019, 02:38:12 PM
Keep us posted ..... it's a bit of a  :notsure:     
Title: Re: Misfire
Post by: stlee29 on April 21, 2019, 03:18:27 PM
Suggest if have the service manual to try the troubleshooting guide under the appendix section.

On the fault code find, worth a check under sect 3-38 fuel system (DFI) self-diagnosis. Mind mine the MK1 but MK2 should not be far off. Good luck... :028:

(https://images.versys1000.com/IMG-20190421-WA0052.jpg)

Title: Re: Misfire
Post by: uralrob on April 21, 2019, 08:38:10 PM


 +1 to Seafoam or other fuel line de icer. I had a similar problem on my V 650 and a shot of methyl hydrate cleared it up immediately. Water in the fuel getting sucked up to the filter as demand increased with more throttle. The problem never recurred.

 Rob.
Title: Re: Misfire
Post by: Floydsz1 on April 21, 2019, 09:19:32 PM
*Originally Posted by stlee29 [+]
Suggest if have the service manual to try the troubleshooting guide under the appendix section.

On the fault code find, worth a check under sect 3-38 fuel system (DFI) self-diagnosis. Mind mine the MK1 but MK2 should not be far off. Good luck... :028:

(https://images.versys1000.com/IMG-20190421-WA0052.jpg)

thank you sir, I've just been out and tried the diagnostic , but because there's no warning lights showing when the engine is running it thinks there's nothing wrong so wont go into diagnostic mode. still have a misfire when starting and ticking over. might have a ride out on it tomorrow while the new plugs arrive, then i'll lift the tank and check the connectors and fit the plugs. i'll also get some seafome or similar, all I've got is redex, might give that a try, It will at least clean the injectors.
Title: Re: Misfire
Post by: stlee29 on April 22, 2019, 12:48:42 AM
Most welcome, sir  :002:

Very likely it is some water condensed in the tank. Water finding paste will have a change of color if water is present. (http://www.kolorkut.co.uk/). Water being denser will settle at the bottom of the tank.

Agree your action plan is worth a shot :028:
Title: Re: Misfire
Post by: Floydsz1 on April 27, 2019, 04:25:44 PM
Just spent 2 hrs in my workshop from start to finish,
Fitted new sparkplugs, everything looked ok , all connectors were clean and dry,

Took 5 mins to get the tank into this position, no need to remove the fairing, just the side panel/fairing part on each side of the tank.

(https://images.versys1000.com/IMG_20190427_125951.jpg)

(https://images.versys1000.com/IMG_20190427_130918.jpg)

Gave the k & n filter a clean and oil
(https://images.versys1000.com/IMG_20190427_130931.jpg)

Stick coils were a pig to get out, just stuck on the rubbers, did them one at a time and blew the holes out before removing the plug, no dirt or water came out.
 Usual staining but nothing I've not seen before

(https://images.versys1000.com/IMG_20190427_135120.jpg)

Number 1 was a pig to get out because the wiring harness runs across the top of the coil. Out of interest, what's the spare connection in the harness for, just above my finger

(https://images.versys1000.com/IMG_20190427_142333.jpg)

All plugs looked ok

(https://images.versys1000.com/IMG_20190427_155135.jpg)

(https://images.versys1000.com/IMG_20190427_155232.jpg)

All back together, started it up and it ran instantly on 4 cylinders, before it fired on maybe 3 for a second or 2 then onto 4, this happened each time I started it.
Its like winter here at the moment so I'm not going out on it but it feels ok again. Hopefully it's a better day tomorrow and I can make sure it's running as good as it always has.
Happy days.


Title: Re: Misfire
Post by: Floydsz1 on May 06, 2019, 04:26:34 PM
managed to get out on the bike today, done about 50 miles and the misfire has gone, all I can put it down to was a spark plug deciding to throw the towel in, Id have expected them to last more than 9,500 miles so maybe just a duff one. Anyhow its all back to its lovely smooth throttle etc etc. Happy days.
Title: Re: Misfire
Post by: TYKE on May 06, 2019, 04:31:09 PM
*Originally Posted by Floydsz1 [+]
managed to get out on the bike today, done about 50 miles and the misfire has gone, all I can put it down to was a spark plug deciding to throw the towel in, Id have expected them to last more than 9,500 miles so maybe just a duff one. Anyhow its all back to its lovely smooth throttle etc etc. Happy days.

You're right of course.. 9,500 miles for a plug isn't realistic today.... but, every so often a duff plug will show up

Good to hear that your bike is now back to its best  :169: