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Old 01-07-2013, 06:25 PM   #72586
808650se
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Location: Oahu hi
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Carb overflow on 2007 dr650se

My d650 is leaking fuel into the oil petcock
still has vacuum just siphoned last of fuel out
What should i do next
Tank off carb off??
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Old 01-07-2013, 06:36 PM   #72587
TrophyHunter
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Originally Posted by ER70S-2 View Post
I don't even remember how to read an analog watch and I'm almost old.
I still remember the day - 23 years ago - "excuse me sir, what time is it?" me - "quarter to 10"

"What time is that on a digital watch?"

I still have the dent in my forehead from my auto-response.
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Old 01-07-2013, 06:39 PM   #72588
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Quote:
Originally Posted by 808650se View Post
My d650 is leaking fuel into the oil petcock
still has vacuum just siphoned last of fuel out
What should i do next
Tank off carb off??
Hard to tell what's happening here but my guess is you have fuel in your oil. If you siphoned the fuel out of the oil fill hole, I'd just drain the oil and start over with fresh oil.

A few possibilities if there is fuel in your oil discussed over the past few pages. I suggest reading those and see if something fits your situation. If not, maybe a more detailed description would be helpful so the folks here can help.
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Old 01-07-2013, 06:43 PM   #72589
BergDonk
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Quote:
Originally Posted by deathu View Post
Hi everyone,

I recently took the top end and cylinder out of my 1998 DR650 engine, to replace the leaky base gasket and fix oil burning issues. While I have the top end apart, I thought it's a good time to check for wear on other accessible items.
The real mileage of the bike is unknown to me - the odo says 35.000km but who can trust the odo of a bike that was purchased from Italy?

Up to this point I did not manage to find any information at all on how to check for the timing chain elongation/stretch, also this does not appear to be covered by the service manual. I suspect the real mileage of the bike may be much higher than indicated, maybe well over 100.000kms. So how does one tell if the timing chain is worn beyond service limit?
One way is to monitor the extension of the tensioner plunger. But its sort of dependant on knowing where it is with a new chain, and how far in it is that represents a problem. I don't know eitehr for the DR. I had mine out recently to service the starter and estimated it to be about half way on the plunger at 57,000 kms. No chain rattles, so OK for the moment. Not much help I'm afraid.
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Old 01-07-2013, 06:55 PM   #72590
808650se
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Quote:
Originally Posted by TrophyHunter View Post
Hard to tell what's happening here but my guess is you have fuel in your oil. If you siphoned the fuel out of the oil fill hole, I'd just drain the oil and start over with fresh oil.

A few possibilities if there is fuel in your oil discussed over the past few pages. I suggest reading those and see if something fits your situation. If not, maybe a more detailed description would be helpful so the folks here can help.
Second time i changed oil and drained fuel from airbox
Bike is second hand was sitting for awhile
had old fuel cleaned out ran great for a month before
Fuel mixing with oil and stalling
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Old 01-07-2013, 07:03 PM   #72591
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Carb rebuild

Will a carb rebuild help overflow of fuel into engine
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Old 01-07-2013, 07:10 PM   #72592
stoney4vida
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Sold my 04 DR 2 winters ago, and knew it was a mistake. Well, I'M BACK Just picked up an 05 with some nice upgrades. Man I missed ya.
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Old 01-07-2013, 07:16 PM   #72593
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Brilliant !



Quote:
Originally Posted by TrophyHunter View Post
I still remember the day - 23 years ago - "excuse me sir, what time is it?" me - "quarter to 10"

"What time is that on a digital watch?"

I still have the dent in my forehead from my auto-response.
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Old 01-07-2013, 07:38 PM   #72594
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Quote:
Originally Posted by 808650se View Post
Second time i changed oil and drained fuel from airbox
Bike is second hand was sitting for awhile
had old fuel cleaned out ran great for a month before
Fuel mixing with oil and stalling
Overflowing problems are due to dirt between the float needle & seat, a hardened, cracked, deformed, shrunken or otherwise damaged needle seat o-ring, a worn float needle tip (look for the tell-tale witness-line under magnification), or in rarer cases a leaky float, damaged seat, stuck float needle plunger, or sacked out float needle plunger spring.

Regards,

Derek
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Old 01-07-2013, 07:42 PM   #72595
motolab
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Quote:
Originally Posted by 808650se View Post
Will a carb rebuild help overflow of fuel into engine
A carb rebuild will include replacing the float needle and needle seat o-ring, so it will in most cases solve the problem.

Regards,

Derek
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Old 01-07-2013, 07:43 PM   #72596
barko1
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Quote:
Originally Posted by gofast1320 View Post
Went out and eyeballed the sight glass in the sunshine a few minutes ago. No visible bubble in sight glass. SOOOOooooo looks like some fuel may have made it in there. Took spark plugs out and turned motor over and gas shot out of spark plug holes. Off to get some oil as soon as I figure out what oil to get so I can change it and will take petcock off of extra tank that came with bike and see if it works.
You need to order this
Float Assembly - Stock BST

DR650 '90-Current



$69.95
A genuine factory replacement float assembly for your stock Mikuni BST40 carburetor.
FCR-MX Carb Conversion Parts

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Old 01-07-2013, 08:06 PM   #72597
neo1piv014
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Quote:
Originally Posted by 808650se View Post
Will a carb rebuild help overflow of fuel into engine
Just so long as you put it back together right. After talking to a couple different people, I still don't exactly understand how to set the float height.
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Old 01-07-2013, 08:21 PM   #72598
motolab
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Quote:
Originally Posted by barko1 View Post
You need to order this
Float Assembly - Stock BST

DR650 '90-Current



$69.95
A genuine factory replacement float assembly for your stock Mikuni BST40 carburetor.
Generally not needed, as the float needle and needle seat o-ring are usually the culprits and can be replaced separately.

Regards,

Derek
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Old 01-07-2013, 08:24 PM   #72599
motolab
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Quote:
Originally Posted by neo1piv014 View Post
Just so long as you put it back together right. After talking to a couple different people, I still don't exactly understand how to set the float height.
A misadjusted float height will not by itself cause the carb to overflow. See http://www.advrider.com/forums/showpost.php?p=19920266&postcount=7068.

Regards,

Derek
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Old 01-07-2013, 08:26 PM   #72600
808650se
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Thanks d

Thanks d
helpful info
thinkin that i need to replace all gaskets since its been sittin
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