Help needed 'Stuttering' Daytona 675

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Cuckoo
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Help needed 'Stuttering' Daytona 675

Post by Cuckoo » Dec 31st, '17, 09:57

2009 Triumph Daytona 675

Hi all, so its winter so bike not used every day like my commuter. Used on sunny days when I can. The last time I took it out it was 'stuttering' at low rev's, in traffic or steady low speeds. At high speeds it wasn't noticeable. It lives in a garage along with a tumble dryer. Mr Tumble and Mr Daytona shouldn't really live together but they do. Mr Daytona does get wrapped up warm. After the stuttering I decided to check the condition of the air filter. It was in good condition but i took it out and let it air dry in the house. In the air box is a mesh that was wet. I totally dried out the airbox. took it for another ride yesterday but the same thing is happening. Any ideas what to check next. BTW connected it up to TuneECU but don't really know what i'm looking at. Thanks all.

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billinom8s
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Re: Help needed 'Stuttering' Daytona 675

Post by billinom8s » Dec 31st, '17, 11:53

Then disconnect it.
If you don't know how to use the tools, put them down.

Have you checked the plugs?
Throttle cable for adjustment?

Bring it over if you want.
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Cuckoo
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Re: Help needed 'Stuttering' Daytona 675

Post by Cuckoo » Dec 31st, '17, 12:45

billinom8s wrote:Then disconnect it.
If you don't know how to use the tools, put them down.
I don't use it, just look at the pretty pictures :p
billinom8s wrote:Have you checked the plugs?
Was my next job but run out of time atm :(
billinom8s wrote:Throttle cable for adjustment?
Yep
billinom8s wrote:Bring it over if you want.
Would love to Si but i've moved again. I now live about 175miles away from you. :(

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Re: Help needed 'Stuttering' Daytona 675

Post by Ducaki » Dec 31st, '17, 14:39

Siphon the fuel out and fill it up with fresh. You probably have a map or maf sensor in the airbox, could be worth checking or looking if the values are normal on tune.
You could also clean and acf50 or similar all the connectors.
Think a proper outlet on the tumble dryer might help.
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Re: Help needed 'Stuttering' Daytona 675

Post by billinom8s » Dec 31st, '17, 14:56

Redex in the new fuel too.
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Re: Help needed 'Stuttering' Daytona 675

Post by Cuckoo » Dec 31st, '17, 17:02

Plugs look normal but going to change them anyway as the bike is stripped.
Ducaki wrote: You probably have a map or maf sensor in the airbox, could be worth checking
Yep Intake Air temperature sensor
I'll clean all the connectors.
Ducaki wrote: Think a proper outlet on the tumble dryer might help.
Stable doors and horses come to mind but yes in hand
billinom8s wrote:Redex in the new fuel too.
Excuse my ignorance but normal redex for cars?

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Re: Help needed 'Stuttering' Daytona 675

Post by billinom8s » Dec 31st, '17, 17:43

Yeah.
It's for fuel, not car specific.

Just don't get the diesel one.
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Re: Help needed 'Stuttering' Daytona 675

Post by Jimbo04zx10r » Jan 2nd, '18, 11:01

Not sure on this but I'm sure I heard they have a common problem with TPS once you have tried everything else I'll have a look at that.
Electronic's keeps the boys upright, the men keep it on the knee slider :)

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Re: Help needed 'Stuttering' Daytona 675

Post by MellowYellow » Jan 2nd, '18, 12:24

If tiz same as my set up, there are 3 little vacuum hoses from the throttle bodies. They have tight radii and can crack and / or perish. Check them.

I went to my local marina chandler an bought some corrugated plastic hose. Brilliant stuff.
Have you noticed that anyone going slower than you is an idiot, and anyone going faster is a maniac ?

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Cuckoo
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Re: Help needed 'Stuttering' Daytona 675

Post by Cuckoo » Jan 14th, '18, 13:49

*UPDATE*
New plugs, cleaned air filter, new battery. Checked electrical connections. Checked hoses. Changed fuel and redexed new tank full.
Still no change. So off to the main dealer.
They ran diagnostic EMRF. It indicated possible injector fault or tight valve clearences. They found sim loose and adjusted but injectors were ok. While finishing off they found a crack in the weld header pipes and suggested the oxygen senor after this may be getting a false reading. So i gun gummed the pin hole just to see before buying new headers but not change, Fault not fixed and £300 lighter.

Any more suggestions? :ympray:

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Re: Help needed 'Stuttering' Daytona 675

Post by Ruffian » Jan 14th, '18, 15:09

Can check and clean injectors at work for semi sensible money if needed,

Compression test would be next
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Re: Help needed 'Stuttering' Daytona 675

Post by Ducaki » Jan 15th, '18, 18:35

Who's your dealer?
Sounds like a right load of bull. A loose shim is the opposite to a tight valve and probably wouldn't cause your problem, sounds like taking money for the sake of it.
Now's the time to learn tune. See if you can do a log with it. Failing that try and find a dyno that will use tune at the same time.
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