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V9 Roamer misfire.

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Nightowl View Drop Down
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    Posted: 11 Mar 2019 at 16:02
Hi to all, I have recently bought a 2016 V9 Roamer with 5K miles dissapointed with the handling but after fitting fork cartridges and changing rear shocks and tyres it is now as a guzzi should be. Unfortunately it has now developed a servere misfire, being old school I dont understand modern electrics and fuel injection. Can anyone offer advise before I spend all my kids inheritance and loose all my hair Unhappy  Thanks 
Dont ride faster than your angel can fly.
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Brian UK View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Brian UK Quote  Post ReplyReply Direct Link To This Post Posted: 11 Mar 2019 at 16:29
Well the obvious is change the plugs and put a decent ose of injector cleaner in the tank and run it again.

The other possibility is the Phase sensor, they can become contaminated with swarf and cause a misfire.
Brian.

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Nightowl View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Nightowl Quote  Post ReplyReply Direct Link To This Post Posted: 11 Mar 2019 at 16:36
Hi Brian have changed the plugs and allways run it on ethenol free fuel. where abouts is the phase sensor. ignorance is not allways bliss.

Thanks Bill.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Brian UK Quote  Post ReplyReply Direct Link To This Post Posted: 11 Mar 2019 at 16:53
Ethanol free fuel will not stop the injectors from clogging.
Brian.

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Nightowl View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Nightowl Quote  Post ReplyReply Direct Link To This Post Posted: 11 Mar 2019 at 16:58
This is not a constant misfire but will try injector cleaner but do feel that the phase sensore may now be the culprit but dont know were it is located.Confused
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Mike H View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Mike H Quote  Post ReplyReply Direct Link To This Post Posted: 11 Mar 2019 at 18:36
Just a guess, on the bell housing somewhere.

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Nightowl View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Nightowl Quote  Post ReplyReply Direct Link To This Post Posted: 11 Mar 2019 at 18:39
Thanks will take a look.also interested in any other V9 owners .
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Andyb Quote  Post ReplyReply Direct Link To This Post Posted: 25 Mar 2019 at 20:23
Did the V9 also have problems with dodgy / loose plug caps like the V7?
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Nightowl View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Nightowl Quote  Post ReplyReply Direct Link To This Post Posted: 25 Mar 2019 at 20:32
Hi Andyb i've looked at them and all seems ok 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Rollo Quote  Post ReplyReply Direct Link To This Post Posted: 26 Mar 2019 at 07:38
Hi, is the misfire on one or both cylinders? If only one is affected have a look at the HT feed to the spark plug. If there is a leak of the HT that can be seen more easily if you run the motor in the dark and look for the short. I had a problem on my older Guzzi with HT woes especially in the wet which were cured by insulating the joints and plug cap to spark plug with a little silicon grease. Your problem could be just a connection malfunction. I am guessing the low tension connectors to the coils is also susceptible to damp. Best to start with the simple and cheap to fix parts in the hope that will get a solution. Hope you sort it soon.

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Post Options Post Options   Thanks (0) Thanks(0)   Quote Nightowl Quote  Post ReplyReply Direct Link To This Post Posted: 12 Apr 2019 at 17:19
Hi Rollo sorry for late reply, not sure which cylinder is misfiring as it onl happens intermitently when riding. have since checked plug caps and leads and replaced the plugs, cant road test for another week as had an operation so been grounded Ermm Also does anyone know anywere in East Sussex were I can get it remapped as this model runs extreamly weak. thanks in anticipation.  ( V9 Roamer. )
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Andyb Quote  Post ReplyReply Direct Link To This Post Posted: 12 Apr 2019 at 21:23
If your engine is similar to the V7 simply try unplugging the electrical wires to the Lambda sensors in the exhausts.  This puts the ECU into open circuit and richens it below 4000rpm - to how it was probably originally designed.
It may be different on the V9, but worth tryinG
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Nightowl Quote  Post ReplyReply Direct Link To This Post Posted: 12 Apr 2019 at 23:33
Hi AndyB 
From what i understand the fuel injection system is totaly different to the V7s but anything is worth a try.
thanks for you imput.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Nightowl Quote  Post ReplyReply Direct Link To This Post Posted: 19 Apr 2019 at 15:09
Hi to all have finally cured the misfire, it turned out to be a faulty switch on the clutch leaver Embarrassed
Thanks to everyone who offered help.
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Mike H View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Mike H Quote  Post ReplyReply Direct Link To This Post Posted: 20 Apr 2019 at 19:36
I'd love to know how that affects the ignition!

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