Author Topic: Couple of observations about the DT 300i  (Read 5659 times)

ophelia

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Re: Couple of observations about the DT 300i
« Reply #15 on: June 19, 2013, 06:38:57 PM »
I can't say I notice, because I always stop with the rear brake on. But are you holding the rear brake lightly or tightly at a stop?
2011 Kymco Downtown 300i

mnpugdog

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Re: Couple of observations about the DT 300i
« Reply #16 on: June 19, 2013, 11:43:34 PM »
Just enough to keep from rolling


ophelia

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Re: Couple of observations about the DT 300i
« Reply #17 on: June 20, 2013, 07:16:14 AM »
Squeeze the rear brake lever a bit tighter and see if it goes away or becomes less noticeable. That way the brake pads don't chatter against the rotor and vibrate with the wheel and clutch while you are stopped and waiting to go. :-)
2011 Kymco Downtown 300i

Vivo

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Re: Couple of observations about the DT 300i
« Reply #18 on: June 20, 2013, 08:04:47 AM »
Anyone else notice that when your stopped on a hill with the rear brake on, it makes the whole scooter shake a little. I know it's just transferring the engine shake straight through the brakes but just saying.

I have a different experience on my Super 8... when I stop and at idle, the scoot shakes a little, when I press the rear brakes, the shaking stops...

wheels

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Re: Couple of observations about the DT 300i
« Reply #19 on: June 29, 2013, 11:49:02 AM »
The cvt outer plastic cover is for noise reduction, there is an inlet/exhaust type impeller to move air through the unit.  If you think it hot back there a Burgman 400 is hotter by much more.

At a stop using the front brake instead of the rear will stop the shakes.
2012  DT 300i  26K miles,  Bestem 929, Biondi w/s, LED brake/tail,turn, OEM mirrors fairing mount, removed buttstop
2015  GTi300  7K miles, Bestem 929 case, PUIG TS w/s, mirrors mounted to w/s, led DRLs in windguards
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mnpugdog

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Re: Couple of observations about the DT 300i
« Reply #20 on: June 29, 2013, 12:20:36 PM »


At a stop using the front brake instead of the rear will stop the shakes.

But much slower for the jack rabbit starts. ;D


YerffeJ

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Re: Couple of observations about the DT 300i
« Reply #21 on: June 30, 2013, 11:14:22 PM »
haha, just noticed that transfer of vibration at the last stop on the way home...  there is more engine vibration when applying the rear vs front brakes at fullstop...
normally i'd not of even noticed but my son was riding with me.. so  randomly i'd applied brakes to stiffen his fidgetting / weight transfer.

So I went to the dealer to run a few diagnostic checks about a rough start after the engine is warm...  MY brand new 2013 Black 300i  on  two occasions has started then choked out... when it does this, i've seen a engine picture with a number 10 displayed on its lcd display ?  usually it starts then cycles to 1800 rpm within seconds, but like i mentioned on accasion when its warm... it starts coughs sputters then returns to 1800rpm.  this seems to be the normal warm start. :'(

 theorys ?

CROSSBOLT

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Re: Couple of observations about the DT 300i
« Reply #22 on: July 01, 2013, 03:53:12 AM »
Initialize the TPS and ISV. That is, the Throttle Position Sensor and Idle Speed Valve (or Air Bypass Valve, same thing, different design). Here is how to do that  as per Service Manual: Key off, engine run-stop switch in Run, open throttle to stop, turn key on, hold throttle wide open for 8 seconds then close, turn key off. Initialization complete!

Try a ride tomorrow and call me in the morning! Normal idle speed should be 1650 rpm but anything from 1600 to 1800 is realistic.

YerffeJ, I forgot to say why I got involved in "Initialize." Mine was doing the same thing yours was doing except no "10" on the display.

Karl
« Last Edit: July 01, 2013, 03:03:25 PM by CROSSBOLT »
Karl

Three motorcycles 1960-1977 (restored a 1955 BSA)
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Yager 200i
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YerffeJ

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Re: Couple of observations about the DT 300i
« Reply #23 on: July 01, 2013, 11:18:06 PM »
 +1 solution. no flutter sputter cough choke. after initialization complete... brilliant.  the idle speed has dropped about 150 aswell asuming the gage is correct.. its alot closer to 1700 now Thank you Very much.
however i didn't halucinate the lcd display number theres been other sightings of this...  just no solutions :)

Initialize the TPS and ISV. That is, the Throttle Position Sensor and Idle Speed Valve (or Air Bypass Valve, same thing, different design). Here is how to do that  as per Service Manual: Key off, engine run-stop switch in Run, open throttle to stop, turn key on, hold throttle wide open for 8 seconds then close, turn key off. Initialization complete!

Try a ride tomorrow and call me in the morning! Normal idle speed should be 1650 rpm but anything from 1600 to 1800 is realistic.

YerffeJ, I forgot to say why I got involved in "Initialize." Mine was doing the same thing yours was doing except no "10" on the display.

Karl

CROSSBOLT

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Re: Couple of observations about the DT 300i
« Reply #24 on: July 03, 2013, 05:22:40 AM »
You are welcome. Now, try this to get rid of the "10": Bike on centerstand, key off, stop-run switch in run, key on, wait 10 seconds, wide open throttle for 10 seconds, throttle closed. CELP light should flash for 2 seconds then remain out and maybe the "10" will stay away, too. I have not done this nor have had any codes to erase. this should not cause any problems if there are no trouble codes stored. Please tell us where on the display this "10" has appeared. In fact, it may be better to start there (where does the "10" appear) first and then we will see what is next to do. As far as I know, all trouble codes show as coded flashes of the CELP light.

Karl
Karl

Three motorcycles 1960-1977 (restored a 1955 BSA)
Agility 50
Yager 200i
Downtown 300i
Navy tech, Ships Engineer, pilot and aircraft mechanic

CROSSBOLT

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Re: Couple of observations about the DT 300i
« Reply #25 on: July 04, 2013, 04:38:27 PM »
This initialize thing should be done at the factory prior to first run-up which should be in the final QC checks before shipping. Failing that it should be at the dealer before delivery but we all know that is not gonna happen. None of us would not even know the procedure existed without the Service Manual. Most of us would not have a service manual if not for a couple of folks ON THIS FORUM!

Karl
Karl

Three motorcycles 1960-1977 (restored a 1955 BSA)
Agility 50
Yager 200i
Downtown 300i
Navy tech, Ships Engineer, pilot and aircraft mechanic

wakeupmaggie

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Re: Couple of observations about the DT 300i
« Reply #26 on: July 07, 2013, 11:50:18 AM »
I'm having trouble getting my bike started when the motor is hot.  It tries to turn over but won't stay started.  Of course, it's on the side kickstand at the time and I can't rev the engine at all. 

Any suggestions as to what could cause this?  Is this something inherent in the DT300i?  I have about 300 miles on it.

Thanks all.


ETA:  I know that the front turn signal is on the mirror, but I was surprised to see that the bulb in the headlight panel where the turn signal may be on other models is a dummy bulb.  It looks like a silver ball.  Is it possible to switch it out for a real bulb that might add some visibility when using the turn signal?  Or is it also a dummy socket?

« Last Edit: July 07, 2013, 12:00:57 PM by wakeupmaggie »
Somerset County, New Jersey
DT300i

racewalker

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Re: Couple of observations about the DT 300i
« Reply #27 on: July 07, 2013, 01:45:25 PM »
I'm having trouble getting my bike started when the motor is hot.  It tries to turn over but won't stay started.  Of course, it's on the side kickstand at the time and I can't rev the engine at all. 

It should not start or run with the side stand down. It is a safety feature. Either use the center stand or sit on it with no stand to start.
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wakeupmaggie

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Re: Couple of observations about the DT 300i
« Reply #28 on: July 07, 2013, 02:26:24 PM »
It should not start or run with the side stand down. It is a safety feature. Either use the center stand or sit on it with no stand to start.

I don't know why I said that.  I guess it's because I almost always use the side stand.  However, in this case, the stand is up when I try to start it hot. 
Somerset County, New Jersey
DT300i

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