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Author Topic: DR 650 SE struggling to start and not idling smoothly.  (Read 256 times)

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Offline Copius

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DR 650 SE struggling to start and not idling smoothly.
« on: June 25, 2018, 10:10:04 am »
Good day Chaps.

Still struggling with my DR.

Its a unmodified or molested 650, had it since 3000km and currently just under 70 000km.
She is used daily to commute close to 100km.

About a month ago, she struggles to start in the morning.
When she does start the idle is rough until semi warm.(3-5 min idling)
When I drive out my gate and get off  (to close it) she dies, as if the idle is too low.
Then its a mission (swinging for 20-30 turns) start again and then I have to adjust the idle up to be able to commute.

Once at work I have to adjust the Idle lower again.
If I were to get on the bike after a hour again I have to start with full choke and still she refuses to idle as if it is the first start in the morning.
With a heavy smell of fuel (suspected over fuelling)

I m considering adding the stainless steel washer to the needle to in the Carb to diagnose the " stalling under heavy deceleration"  (This is a old issue though)
Only addition is an inline filter on the fuel line that I replace with every service but this has been part of the setup for years.

I've played with the air mix screw ( 2 & 1/8th out) with no luck.
Is it time for a deeper check/ service?
Carb clean needed?
Original inline filter could be blocked?


Any guidance or help will be greatly appreciated.

Thanks in advance
C.

« Last Edit: June 26, 2018, 02:22:07 pm by Copius »
 

Offline Copius

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Re: DR 650 SE struggling to start and not idling smoothly.
« Reply #1 on: June 26, 2018, 08:11:30 am »
Also need to mention the following:

I have seen an increase in fuel consumption in the last 5000km.
Close to 4km/L heavier on fuel.

I can feel a split second surge ( like a gust of wind) when traveling at 100km/h and slowly closing the throttle.

Thanks.
C.

« Last Edit: June 26, 2018, 02:22:35 pm by Copius »
 

Offline Oubones

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Re: DR 650 SE struggling to start and not idling smoothly.
« Reply #2 on: June 26, 2018, 08:40:09 am »
Sounds to me like mixture problems.
Have you checked the connecting rubber for cracks or airleaks?
If it sucks air after the carb it can cause your symptoms.
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Offline Hardy de Kock

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Re: DR 650 SE struggling to start and not idling smoothly.
« Reply #3 on: June 26, 2018, 08:58:58 am »
Valve clearances and proper carb check
 

Offline Welsh

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Re: DR 650 SE struggling to start and not idling smoothly.
« Reply #4 on: June 26, 2018, 09:17:57 am »
Valve clearances and proper carb check

100% my opinion and fuel filter while you are their and air filter?  8)
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Offline chopperpilot

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Re: DR 650 SE struggling to start and not idling smoothly.
« Reply #5 on: September 12, 2018, 07:18:38 am »
Valve clearances and proper carb check

100% my opinion and fuel filter while you are their and air filter?  8)

Agree. It seems to be a maintenance issue.

A proper carb strip down and clean is required.

MotoComp in Kzn can supply jets etc, if required.

Your needle and seat appears to be leaking. The fuel smell. Could be dirt or old age.

Yes, do the valve clearances. Not difficult.

Is your air filter serviced and in good condition?

Carb rubbers should be fine, but no harm checking for cracks/leaks.

If you are in WC, Dux or Superfoxi can sort your boney out.
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Offline Copius

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Re: DR 650 SE struggling to start and not idling smoothly. -Sorted!
« Reply #6 on: October 19, 2018, 03:23:51 pm »
 :thumleft:

All she needed was valve adjustment and a little bit of TLC (Proper carb and vacuum lines cleaning.)

Never pulled like this before, and even lighter on fuel then before!

Thank you DUX. Much appreciated!